— — — — — — — — — — — — — — — — — — —
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1 1 $ -. - r Q I Quattro microTM Course Outline Morning - - PowerPoint PPT Presentation
- 0 C 3 C) 0 I I 1 1 $ -. - r Q I Quattro microTM Course Outline Morning Afternoon Introduction: QM Overview, Instrument Tuning:
— — — — — — — — — — — — — — — — — — —
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Quattro micro Training Course
Quattro microTM Course Outline
Morning Afternoon Introduction: QM Overview, Instrument Tuning: Tune API & Quad Theory, MS
page settings & acquisitions Acquisition modes. MassLynx Overview: File MassLynx: Chromatograms, structure and the Editors spectra & SIR/MRM. LC/MS basics Mass Calibration: Software Hardware Maintenance: and calibrate our Quattro Routine Maintenance
micr&.
Quantification: Practical example Course Evaluation Quantification: Software
Triple Quadrupole Instruments
MSI Collision Cell
In a triple quadrupole or tandem mass spectrometer,
MSI and MS2 are mass analyzers that filter ions. The Colhsion Cell filled with Argon and potential is applied to fragment ions.
MS2
Clc(
7
g
S c h e m a t i c
Overview of the Quattro micro
T r a n s f e r Hexapole R e m
a b l e O p t i c s C
l i s i
Quadrupole S a m p l e
RE
L e n s MS2
Cone
Quattro micro
Z-Spray
Ion Source
Conversion ESP
D y n
e A P C I Probe Phosphor 1
jj.
P r e Filter P r e Filter P M T
,///“
Post
Filter
1O
m b a r
1O
t
mbar
1O
mbar R
a r y Pump T u r b
u m p T u r b
Quattro m i c r
Course
3
cok/c)
6
Quattro
m i c r
Ions Cylindrical Conversion Dynode
I__
E l e c t r
s Photomultiplier Tube Phosphor
MS 2
Photons
P M T
Z
S P R A Y ’
S
r c e
l e c t r
p r a y
Sample
Nebuliser I
Z
c
4
’t
Cleanable E x h a u s t
Baffle
jzzL
I.
L . . .
_ _ _ _ _
I
Valve
II
Desolvation
I ILi
11
Extractior
En
R
a r y Turbomolecular Pump P u m p s
Quattro micro Training Course 4
U,
Cl)
I
C-) C
I—I
C)
E
I—4-, 4-,
C”
D
C
a)
C . )
C,)
. 5
G )
I
I
— — — — — — — — — — — — — — — — — —
Quadrupole Theory
A quadrupole is an assembly of four
parallel rods arranged equidistantly from a central axis.
DC voltages, ions can be filtered
along the central axis and their
mass measured to yield a mass spectrum.
applied to the quadrupole, ions with
masses too large or too small will
not pass through the quad rupole.
E d
These ions will strike the rods and
fl
iew
be lost.
Quadrupole Analyzer
Prefilter Quadrupole Mass Filter
Ion with
Rejected Ions
StableTrajectory
Quattro micro Training Course
6
R F Voltage Applied t
L e f t / R i g h t Pairs
Quad r u p
e Rods
+v
U)
Q u a d r u p
e Rod P a i r
________ _______________________________________—Top/Bot
ci
<ci
Time
—
Left/Right
A p p l i e d Potential to
Q u a d r u p
e R
s
The voltage applied t
rods
i s
given
by:
=
U-VcoswT
D C
Voltage RF Voltage The voltage applied t
is:
=
+
VcosoT
Typically: D C Voltages
( U )
are
in
the range
1
V RF
Voltages
(V)
range
f r
1000 t
V RE
frequencies
(o)
are around
1
mHz Quattro m i c r
Course
Applied Potential to Quadrupole Rods
Quadrupole Theory: Settings for DC and RF Voltages When a Quadrupole is Used as a Mass Filter. For an Ion with m/z = m
3
U = DC Voltage
V = RE Voltage
Ions are pushed through the quadrupole by using an applied potential difference between the entrance and exit to quadrupole assembly. The trajectories of ions as they pass through the quadrupole assembly can be calculated. This calculation is very complicated so a qualitative description of the calculation will be given.
U
7
The m
3
ion will
have Unstable trajectories if the quadrupole is
and V values from this region The m
3
ion will
have Stable trajectories if the quadrupole is
and V values from this region
L
Quattro micro Training Course
1
8
Consider Another
I
with
mlz
=
m
2
U
m
3
Stability L i n e
\
—
The
m
2
i
will
h a v e Stable trajectories
i f
t h e q u a d r u p
e
is
with
U
and
V
v a l u e s
f r
this region
U
=
DC
Voltage
V
=
R F Voltage
Stable Trajectories Through the Quadrupole
for Two Ions: mlz
=
m
2
and m/z
= m
3
m
2
Stable Neither
I
S t a b l e /
U
__3
Stable] IU=DC Voltage
V = R F V
t a g e j
L T
and
m
2
Stable
m / z :
m
3
>
m
2
Quattro m i c r
Course
9
/
jr k
Injector Hole
Quadrople setup so for three ions passing through the quadrupole, m
1 has a stable trajectory and m 2 & m 3
have unstable trajectories. When the a Quadrupole is Operated as a Mass Filter:
U and V are Varied Linerarly (Ratio of UN is a Constant) mlz: m
3
> m
2
> m
1
Example of a Bad Quadrupole
p Ei\\\/\OperaDonal Line
%% %%%I’ \ ——
m/z
V
m
1
, m
2 & m 3 will be
m
3 & m 2 will be
Only m
3 will be
passed through passed through passed through
Quattro micro Training Course
10
Quadrupole Operated as a Mass Filter with UN
= Constant:
Example of Better Quadrupole Operational Line
m
3
passed
Im
passed
m
1
passed
m
1
m
2
m
3
A A A
mlz
m
1
___________
Quadrupole Operated as a Mass Filter with UN
= Constant:
Example of Optimum Quadrupole Operational Line
L[J,7J mlz
U
m
2
V
Quattro micro Training Course
11
Quattro micro Training Course
12
RF Lens
End View Note Voltage Polarities
Ions
RF Lens
Hexapole Assembly Radio frequency plus a small bias voltage
transports all masses. Designed to insure ion focussing in a
relatively poor vacuum. Delivers the ions in a tightly focussed beam to the quadrupole where they can be analyzed.
Mass Resolution is defined as m / L\m
Peak Center = 633.2 Da
FWHM = 0.60 ______________Mass Resolution is 633.21 0.60 = 1055
631 632 633 634 635 636 637
mlz
Unit
Resolution
If
y
h a v e
a
s i n g l e peak that h a s
Unit
Resolution:
100
A
s i n g l e peak measured a t
80
u n i t A m a t 5 % r e s
u t i
w i l l i s
I
amu
I
h a v e peak
‘
60
width of
I
I I
amuat5% h e i g h t
I
40
I I I I
20
I I I
6 3 4 635 636 6 3 7 6 3 8 639
Unit
Resolution
If
yu
d c
nt
ha.e
a
s i n g l e
‘—“
a t
U n i t R e s
u t i
:
100
Determining
i f Am
a t
5%
T h e r e
w i l l
be
80
i s
I
amu
w i l l a 10% Valley
be difficult
i f
b e t w e e n
2
t h e r e are
2
p e a k s
60
p e a k s
equal height m e a s u r e d a t unit r e s
u t i
40
S S S
20
S S S S
634 6 3 5 6 3 6 6 3 7 638 639
Quattro micro Training Course
1 3
Unit
Resolution
For m
t c
p
n d s , you do not g e t a s i n g l e peak
p e a k s
heigt.
100
Determining For most c
p
n d s we ifAm at5% u s e
FWHM
= . 7 D a a s
a is I amu
t e s t
will be difficult
/
m u l t i p l e ’ p e a k s between peaks
40
will be difficult
60
if
t h e r e are
if
t h e r e are multiple p e a k s
uneven height
20
_____________________634 635 636 637 638 639
A t m
p h e r i c
P r e s s u r e
Ionization
( A P I )
M)CROMASS
14
Quatiro micro Training Course
Atmospheric Pressure I
i z a t i
(API)
Electrospray
sprayed out of
a
capillary tube to which
a high
voltage
is
applied to form a spray
droplets.
Atmospheric P r e s s u r e Chemical Ionization
(APcI)
passed through
a
heated tube (fused silica capillary). The liquid is evaporated to produce gas phase molecules.
A
high voltage is applied to a corona pin n e a r the exit of the tube and the molecules are ionized when they
p a s s through
a cloud of ionized n i t r
e n atoms produced
by
the corona
pin.
E l e c t r
p r a y lonisation
Example
Positive Electrosp r a y
00
00
0000
00
> .
C
0000000
25-4.0 kV
1
H i g h V
t a g e
Par
000
C
n t e r Electrode
Quattro micro Training Course
15
Z
SPRAY’
Source
l e c t r
p r a y
Sample
Nebuliser Desolvation Exhaust Cleanable Baffle
Isobh:n
_ _ _ _
_[xiEi
Rotary Turbomolecular Pump Pumps Source Enclosure
Droplet Formation in Positive Ion Electrospray
More Negative Ions
than Positive Ions
+ + + +
L i q u i d Ø
+- + ±++_++ _+ +++ ++
_++
__+ +__+__; +___+ + + +
High Voltage Electrospray Probe Tip ++ Taylor Cone Positively Charged Droplets More Positive Ions
than Negative Ions
Quattro micro Training Course
16
The electrospray droplets carry positive c h a r g e s away from the c a p i l l a r y tube. To balance this
flow of p
i t i v e charges, electrons flow
the c a p i l l a r y tube. T h e s e electrons come
from negative i
s close t
the capillary
wall via
an electrochemical oxidation reaction. Electrospray can be thought
as an electrochemical process.
Example
reaction that can occur at the c a p i l l a r y
w a l l :
20H—H
0+0+2e
E l e c t r
p r a y Droplet Undergoing Fission
Solvent Evaporation
I’
Coulom
bic”;
Fission I Charge resides
the surface
t h e d r
l e t . Solvent
evaporates
from
t h e droplet and t h e droplet shrinks
until
the c h a r g e density
t h e surface reaches
a point
w h e r e the repulsive force b e t w e e n charges exceeds t h e
l i q u i d
surface tension that holds the drop together.
At
that
point,
t h e drop fissions and
a
set
s m a l l droplets are expelled f r
t h e m a i n d r
l e t .
Quattro micro Training Course
17
A c t u a l Droplet Undergoing Coulumbic Fission
Rough Sketch
Photo f r
P.
Kebarle and
L.
Tang, Analytical Chemistry, 64, 9 7 2
A
( 1 9 9 3 )
It is
estimated, that
in
t h e fissioning process
a
charged droplet
will
lose
t h e order
15%
its
charge
but
as
little
as
2 %
its
mass.
Electrospray tends
to work
best
with
solutions that have a high percentage
s
v e n t s s u c h
as
acetonitrile or methanol, though the solution cannot be totally organic. The solution must have some aqueous content. Solutions must have some ions
i n
it
for
electrospray
to work. Fortunately most solutions that
h a v e an a q u e
s component
will
h a v e some
i
i c
species s u c h a s
hydronium/hydroxyl ions and sodium ions.
Quattro micro Training Course
18
Models f
formation
Gas
Phase
Ions from Droplets
Ion
Evaporation
Model Through evaporation and f i s s i
i n g , droplets reduce
in
size
t
nM in
Diameter Ions then ‘evaporate’ from the d r
l e t ’ s surface. The more ‘Surface Active’ a molecule
i s ,
the more readily
i t
will
f
m ions
i n
electrosp
ray.
Charged R e s i d u e
Model Droplets continue t
evaporation
till
a
charged residue remains.
For an analyte
the
form
M X ,
the charged residue
will
be
the
form:
(M)
n(M)Qm
Electrospray Ions
Positive Electrospray Ions are produced by
the a d d i t i
t
molecule of
a p
i t i v e l y ion (e.g H+, N H 4 + , Na+). These p
i t i v e l y charged ions
t h a t are added are often referred to as
‘adducts’.
H H
L i d
a i n e C H
3
C H
3
Negative Electrospray Ions are most
by
the
removal of
a
proton (hydrogen ion) from
a molecule.
C H
3
C H
3
I b u p r
e n
H H
C%(’r
+H+
Quattro micro Training Course
19
Electrospray and Ions in Solution
Electrospray is a solution process. Molecules that have a greater tendency to ionize in solution will tend to have stronger electrospray signals. This is why certain additives to mobile phases in
LC/MS analyses can enhance electrospray signals. An example of this is addition of an acid (e.g. formic acid) to the mobile phase in positive electrospray LC/MS analyses. This can often result in a stronger
electrospray signal by aiding in the protonation of analytes in solution.
13-Cyclodextrin
HO OH
HO0H
HO\f
HO
OH
13-Cyclodextrin is
/ /
a ring of 7
OH HO
40
OH
HOO
HOH
OH
Oxygen Linkages
OH
are Numbered
Quattro micro Training Course 20
Positive Ion E l e c t r
p r a y
13-Cyclodextrin
Quattro microTM
BetaCyDex_5 1 (10.018)
1152
6.92e6
38
( M + N H 4 ) +
2: Scan ES+ 100 1135.37
(M+H)+ e Voltage=45 V
%.
BetaCyDex_5 1 (9.983)
1: Scan ES+
100
(M+Na)+
1157.36
6.36e6
/
(M+K)+
1158.37
ii7j3.36../
I
%
Cone Voltage=140 V
r.
1120 1130 1140 1150 1160 1170 1180 10 pg/mL 6-Cyclodextrin in 20/80 Acn/20 mM NH4 Acetate pH=4 in
Water infused at 10 pLjmin
Negative and Positive Ion Electrospray of 6-Cyclodextrin
Quattro microTM
BetaCyDex_6 1 (2.186) Scan ES-
1133.36
8.73e6 (M-H)- p34.37 Negative Ion Ele&ospray Cone Voltage = 100 V
BetaCyDex5 1 (10.018)
2: Scan ES+
113537 5.53e6 100
(M+H)+
36 44
Positive Ion Electrospray
%.
Cone Voltage =45V
I i m/z1125 1130 1135 1140 1145 1150 10 pg/mL B-Cyclodextrin in 20/80 Acn/20 mM NH4 Acetate pH=4 in
Water infused at 10 pL/min
21
Quattro micro Training Course
Samples A n a l y z e d
in ES
m
e
Typical ES Positive Ion Samples Peptides and proteins Small polar molecules Drugs and their metabolites Environmental contaminants
Dye compounds
Some organometallics Small saccharides Typical ES Negative Ion Samples Some proteins Some drug metabolites (e.g. conjugates) Oligonucleotides Some saccharides and polysaccharides
A t m
p h e r i c Pressure C h e m i c a l Ionization
(APcI)
Low molecular weight (<1000 DaJ Singly charged species
Fragmentation, even at low cone voltages
Mobile phase can be non-polar
(normal-phase chromatography)
Quattro micro Training Course 22
APcI Source
Cowori DiSchar9o Pin
f ICCnanbTc
Ezhsut
—*
____________________
liner
NbulI5es Ocolyation
ir
[]1
ii
Restrictoi }tA4____
1
II
I
Enclosure —. Rolury Turbomelocuku Pump Pumps
APCI Probe Design
Stainless Tube Fused Silica Capillary (Sample flows through)
/
I
Plasma of Ionized N
2
and °2 Ions
1,
I
Drying
Gas
APcI Sheath
Gas Nebulizing Gas Corona Pin (Voltage Applied)
Quattro micro Training Course 23
A P C I
ionization
temperature, more aggressive
ionization.
i n
the g a s p h a s e .
takes p l a c e
in
the plasma.
the nitrogen
is to
evaporate solvent expelled from fused silica.
a y
be more sensitive than electrospray
with
some non-polar m
e c u l e s
A P c I
I
s
In positive ion APcI, ions similar to
those formed
in
positive
ion
electrospray are formed.
For
example: (M+H)+ or (M+Na)+
In
negative
ion APcI,
the
CM-H)- ion
formed
in
negative
ion
electrospray
i s
also produced.
Also in
negative
ion APcI,
free electrons are formed. Certain types of molecules can
pick u p
electrons produced
by
the corona
pin
and become negatively charged without a change
in
mass. This process
is
sometimes referred to as “M+.” or
“M
plus dot”.
Quattro micro Training Course 2 4
APCI
v e r s u s Electrospray
100,000
3 )
1000
a)
Non
Polar P
a r
APCI
v e r s u s E l e c t r
p r a y
100,000
C)
a)
1000
U )
Non
Polar P
a r
Quattro micro Training C
r s e
25
A P c I
versus Electrospray
100,000
c3)
a)
1000
a)
Non
Polar Polar
APCI
versus Electrospray
APcI Electrospray Ionization Probe Potential Process
Gas Phase Process Fused Silica Capillary Applied to Corona Pin Probe heater vaporizes
the liquid.
All molecules are
now in the gas phase. Corona pin produces nitrogen ions. Molecules are ionized when they collide with the nitrogen ions. Solution Phase Process Stainless Steel Capillary Applied to Capillary Spray of charged droplets produced.
Liquid is evaporated from
the droplets. Then droplets split into smaller droplets. When the droplets get
small enough, ions enter
the gas phase.
Quattro micro Training Course 26
API
versus Electrospray ( c
t i n u e d )
APcI Fragments
Electrospray
Sample Types
More vigorous ionization. More fragments produced. Low MW<1000 Can be less polar. Usually Singly Charged. 0.2 - 2 mL/min Source
“.‘ 120-140 °CProbe 450-550 °C
Charges
Flow Rates
Temperatures
‘Gentler’ ionization. Less fragments produced. Small & Large Molecules Tend to be more polar. May be Multiplied Charged. 0.001
Infusion:Source
“-i 80 °CDesolvation
“
120°C
HPLC:
Source
“
120 °C Desolvation
‘
350 °C
P
i t i v e
Compound Type Basic C
p
n d s (-NH
Easiest Formed
Ions Acidic C
p
n d s
(
O
H ,
(M+H)
P
Ions
(M-H)-
Neg Ions
Quattro micro Training
Course
27
_________
______
______
Quattro micro Training Course 28
Z-Spray
Source
MICROMASS
MS TEC.HIOL.CC USDesolvation Gas Manifold
RF Transfer Optics
Sampling Cleanable Vent Hexapole Ion Bridge Cone Baffle
iO mBar
I
Isolation Valve
r : z z .
Restnctor
Z
SPRA
yfll
Ion Block
1 mBar
R F
Transfer Optics Desolvation Sampling Cleanable Vent Hexapole Ion Bridge Gas
M a n i f
d Cone B a f f l e
1O
mBar
‘-*-
E E \
I
4 _
Isolation V a l v e
ZSPRAY
I
Block Extraction
“ . ‘1
mBar Cone
Neutral solvent evaporating iconS-shaped reçon from i n i t i a l s p r a y )
4
I Skimmer Solution inlet t
analyzer electrospray source
—-—fr
m a s s
—b\
spectrometer
Ion
b e a m Neutral solvent evaporating ( c
e
h a p e d r e g i
from iniaL s p r a y )
Sokiuiri inlet to electrospray source —b-
k i m m e r
t i c e
m a s s
Z
h a p e d s p e c r r
e t e r
i
beam
t
Why Z-S
p r a y ?
More ions make
it
into
the Z-Spray source Quattro micro Training Course 29
30
Z SPRAY
Source
Sample Rotary Turbomolecular Pump Pumps
Probe Position
0.5mm Sample
Cone \... Sample Capillary 4mm 8mm Probe
Tip
Quattro micro Training Course
Electrospray Probe Tip
Stainless Steel Tube Stainless Steel Capillary
Liquid
I
Electrospray ‘Plume’
Electrospray Probe Tip
Nebulizer Gas
I
Liquid
‘ I
Nebulizer Gas
Electrospray ‘Plume’
Quattro micro Training Course
31
E l e c t r
p r a y P r
e
T i p
D e s
v a t i
G a s N e b u l i z e r G a s L i q u i d
. 2 _ _
I
N e b u l i z e r G a s D e s
v a t i
G a s
Electrospray
‘Plume’ N i t r
e n
I
Desolvation Gas
Flow
H e a t e r Heater
W i
N i t r
e n
Quattro micro T r a i n i n g Course 32
C
e G a s
Quattro
Ultima
a n d Quattro
LC:
Sample C
e a n d Cone G a s N
z l e
—ESP or
APCI Probe
I
.
Plume of
_ _
t . , .
Ions,
&
.
and Stuff
‘P
Ions with Fewer Clusters which yields better SIN. Less Stuff Collects
Quattro micro Training Course 33
1
1
Cone G a s Example
e x t r
e t h
p h a n
I
nqlmL DextroMTP 20 uL X T e r r a
C8
Dextro
104
Sb (2,1.00); Sm ( M n , 2x1)
3 9 100
/ ]
260 2 6
00,4.09 MRM
Channels
55.
T I C
S53e3
Cone G a s = 125
09’
D e x t r
5 b
(2.1.00); Sm
( M n , 2x1) 100 %
0. Dextro,1_065b
(2,1.00); Sm
( M n ,
2 s f )
4.09
K
MRM
Channels E S .
T I C 8.28e3
Cone Gas 175
4 9
MRM of 2
Channels E S .
T I C 8.43e3 OextrQ_1_07
Sb (2,1 00); Sm
( M n , 251)
100 fl%
C
e Gas
=
225
4.09
MRM
sf2
Channels ES. TIC 7.28e3 2 .
‘2.50
‘3 00 3 . 5
Cone Gas 275
Baseline N
s e Magnified
by
a F a c t
6
Time 4 . 4 . 5 5 . 5 50
APcI
Source
Sample
Nbullser DesIvetion
Gas Gas
Dtsharge
L r —
_ _ _ _
____________C l e a n a b l e
E x h a u s t
=
__________
B a f f l e Liner
B S a m p l e r
A
h
—‘
Isolabon
_ _ _ _ _ _ _EnEL
Rotary 1 u r b
c c u t a Pump P u m p s
Quattro m i c r
C
r s e
34
Quattro micro Training Course
in: 4 u N:r
*I.n”.,l,s’
Si..
.ZSPRAY
çLz
441 .4.Mass Spectra and
MS Data Acquisition Modes
‘, MICROMASS’
MS I EcHwoI.OG:r’;35
Mass
S p e c t r
e t e r
Data
Acquisition M
e s
M S
Modes
Scan
MSIMS
Modes
Ion
Scan
a
Parent
Ion
Scan
Neutral Loss(Gain)
MS1
Scan
M S 1 Collision
/
M S 2 C e l l
(No Argon)
Scanning
RF
RF(-i-DC)
10 -100V
m
1
m
2
m
3
Quattro m i c r
Course
3 6
MS Spectra of an Infused Spectra of ‘fens
MIX4INF2 1 (1019) Scan ES- 100 205.1 598e6
Ibuprofen (M-H) 243.1 253.1 Flurbiprofen Ketoprofen (M-H) (M-H)
C 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 255 260 265 270 275 280Monoisotopic versus Average Molecular Weight
Monoisotopic Molecular Weight is calculated using the atomic weight of the most abundant isotope of each element. Average Molecular Weight is calculated using the average atomic weight of each element taking into account the relative abundance of its isotopes. For example: Naturally occurring carbon is 98.93% Carbon-12 (AtWt=12.0000) and 1.07% Carbon-13 (AtWt=13.0034).
In calculating a monoisotopic molecular weight, each carbon would add
12.0000 to the molecular weight. The average atomic weight of carbon is: (0.9893)(12.0000) + (0.0107)(1 3.0034) = 12.0107 So in calculating an average molecular weight, each carbon would add 12.0107 to the molecular weight. The molecular weight listed on reagent bottles is an average molecular weight.
Quattro micro Training Course
Mass Spectra
I s
i c Forms of an Analyte
MIX4_INF3
1(2021) Sm (SG, 2x0 50) Scan ES- Thia_Scan_Ol 79 (3384) Sm (SG, 2x0.50); Cm (77:84-(3 100 243.0 3.33e6 100
292464e5 Thiamethoxam
(M+H)
uthiprofen
im,z a miz 240 241 242 243 244 245 246 247 248 290 292 294 296
SC1
—9L
i l . c t
eycWa
ç * V U
a
M a s s
Spectrometer
A c q u i r e s Spectra
in
the
‘Profile’
Mode
‘Continuum’ Data
DODCa
a
D0
/
mri
608 609 610 611 608 609 610 611
E x a m p l e of Profile D a t a a c q u i r e d If directly stored by MassLynx, at 1 6 p
n t s p e r D a l t
t h i s
i s
‘Continuum’ Data Example: S u p p
e you a r e acquiring s p e c t r a f r
t
a m u a n d t h a t you a r e t a k i n g
e c
p l e t e s p e c t r u m e v e r y
1
s e c . T h e n 60 separate c
t i n u u m s p e c t r a w i t h a r a n g e
a m u
w i l l
be s t
e d e a c h m i n u t e of a c q u i r e d d a t a .
Quattro m i c r
r a i n i n g Course 3 8
‘Centroid’ Data
.
cac
Converting Continuum Data to Centroid Data
The mass spec can also take each profile or continuum spectrum it has acquired and convert it ‘on the fly’ to centroid data. In this process, the center of each spectral peak is determined and only information on the center of each peak is transmitted to MassLynx.
611 608 609 610 611 n 608 609 610
Data Acquisition Modes
series of spectra are acquired are stored individually largest data file size shows peak shape can handle signals that vary with time (e.g. LC Peaks)
sees profile data but instantly converts it to stick data,
smaller data file size than continuum data gives no peak shape information.
is continuum data summed into one scan
smaller data file size than continuum but preserves the peak profile. assumes there is a constant signal (infused sample)
Quattro micro Training Course
39
Which Data Acquisition Mode?
__________________________________
Mode Maximum Scan Speed Typical Use
Atl6ptsIDa
GC, OpenLynx,
Centroid 1000 amulsec FractionLynx, high concentration samples
1000 amulsec Multiply charged (EPCAS)
species, non-time
MCA 400 amulsec
resolved data
(TDAT) (e.g. Infusion) 1000 amulsec Multiply charged
Continuum (EPCAS) species, time
500 amulsec
resolved data
(TDAT) (e.g. HPLC)
Mass Spectra of LC Peaks
3.76cr
377i’
1 ___________________ with RT of 3.40 Thoarnethonano 340 2.860Spectrum of Peak
_________________ (MCH) From CVFall
L2
r
NCMdaS20
300 350 400 480 500G-’
mono _______________________ ________ _______________________20 584e7
Full Scan Spectra of LC Analysis of a
Mbnlee VF
Cone Voltage (MOO)Standard Solution of Thiamethoxam
FragrnontntOfland one of its Metabolites.
I Spectrum of Peak
Spectra taken using I second scans
Fr0wCVFw4h prof 377
from 100 to 400 Da.
19
AI.m.r..
Spectra of two LC Peaks.
40
Quattro micro Training Course
MS Scan
Thiamethoxam
THIA_INFUS_02 1(0.176) Sm (SG, 2x0.70) 10 143
181 197
205215 250 229 241
M+Na M+H
292
Scan ES+ 5.85e6
314 Thia 1F29 011 79(3.384) Sm (SG. 2x0,70): Cm (76:84) 100
Spectrum from Infusion
% 330
.jap•
391 2
CVF
2
M+H
211 186 197 156
Scan ES+
4.1 7e5 246
Thia_i F29_0i 1 79 (3.384) Sm (SG, 2x0.7d); Cm (76:83(45:73+8€ 100
2
M +Na
314
Combined Spectra from Peak at 3.4 mm
in LC/MS Analysis
M+H
CVF
211 IL. 246 96))
Scan ES+
‘24.55e5
Combined Spectra from Peak at 3.4 mm
in LC/MS Analysis with
M+Na
Spectra Subtraction
314
m/z 140 160 180 200 220 240 260 280 300 320 340 360 380
Cone Voltage Fragmentation
Fragments from Collisions along with Ions Produced ‘Unfragmented’
by ESP or APCI Ions
Cone Approx
20-1 OOV
Ions which are accelerated by the cone voltage, collide with Nitrogen molecules
Quattro micro Training Course
41
Example of Cone
Erythromycin
:
MW
=
7 3 3 D a
Voltage Fragmentation
Q u a t t r
ERYTHRO_010_MS 1(1.530) Scan ES+ 100-
7 4
1.34e8
C
e V
t a g e = 3 V
U %- 140 6 159 193
5 7
576 718
0— I IERYTHRO_011_MS 1(1.530) Scan ES+
ioo
1
158
2.20e8
C
e V
t a g e
=
5
V 576 %
I1
y6
19
5 5 8
ERYTHRO_012_MS 1(1.530) Scan ES+ 1001
158
6.62e8 C
e V
t a g e
=
7 5
V % 1 1 6
19
0— ‘.‘—‘.‘.i— irrI/z150 200 250 300 350 400 450 500 550 600 650 700 750 800
Me .Me
Me
OH
Me\,Me Me\,Me
H Z 7 M e
OMe Me
e
157Da 7 3 3
D a
Me
Voltage
MeL.Me
Fragmentation
M e i
LyH
Me\NMe
In
E r y t h r
y c i n
O 1 1 M e
OO
Me
H
575Da
42 Quattro m i c r
Course
R e c
n i z i n g
Multiply
Charged I
s
Mass spectrometers operate
the basis
mass-to-charge
r a t i
Mass assignments are n
m a l l y made assuming a single charge per i
( e . g . z
= 1
so
mlz
=
m)
Single charge mlz
=
(M+H) Double
charge
mlz
=
( M + 2 H ) / 2
n
charge
m l z
=
( M + n H )
I n
Modified 6-Cyclodextrin
Charged Example
Modified 1 3
y c l
e x t r i n .
HO OH
Added functional groups
a r e
HO
shown
i n
t h e dashed
circles.
OH
HO
N H
2
OH
Prof. P a i n Smith, Baltimore County H O \ f 8-Cyclodextrin
OH
HOZN.,o
H)o:o0H
a r e Numbered
OH
Quattro micro Training Course
Modified 6-Cyclodextrin
Quattro microTM
SH_263_MS_202 1 (2.091) Scan ES+
1217.5
1.41e7 Positive Ion Electrospray (M+H)+ Cone Voltage = 100 V 1l8.5
%•
546.1 690.2
U.
‘
SH263_MS201 1 (2.091) Scan ES+
ba
609.2 4.29e8
Q97 (M+2H)++ Positive Ion Electrospray
Cone Voltage = 55 V
600 700 800 900 1000 1100 1200 1300 10 pg/mL Modified 6-Cyclodextrin in 20/80 Methanol/0.1% Formic Acid in
Water infused at 10 pL/min
Modified 13-Cyclodextrin
Assume Monoisotopic Mass of Analyte is M. Mass of Isotopic Forms (mostly from Cl 3’s) = M, M+1, M+2,,,
121748 100
Top Spectra For Singly Charged Ions (assume addition of H+) m/z of Isotopic Forms=
1219.50
M+1, M-I-2, M+3,,,
1220.44
i miz(Monoiso MW=1216.45)
&
I I1216 1218 1220 1222 60926
Bottom Spectra
100
For doubly charged ions, (assume addition of 2H+)
°k
i i I I Im/z
10.27
mlz of Isotopic Forms =
(M+2)12=M12+ 1, (M+3)12=M12÷ 1.5, (M+4)12=M12+2,
607 608 609 610 611 612 613 614
Quattro micro Training Course
Multiply Charged Ions
Substance P : Arg - Pro - Lys - Pro
Substancc P
SIJL7PEI I (Di1k S:M,, 2D.E: EL (I.EfEE)Scan ES. M+II1 4525 13417
$DE
117<1‘750
Example of Multiply Charged Ion
100
Electrospray Spectra of Horse Myoglobin
20
mlz and Charge States
649
Shown
15
113121
808
14
121222
77113
130512
23
1414 73811
24
15429
707 1696 1885c
— — ..— —. .-.--. —mlz 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900
Quattro micro Training Course
M S 1
Scanning
M S 1
Scan (Review)
M S 2 R f Collision C e l l
(No Argon)
Rf(+
D C ) 10
V
m
1
m
2
m
3
M S 1
S c a n s a r e u s e d t
t a i n M a s s S p e c t r a
SIR
(Selected Ion Recording)
M S 1
Collision C e l l (No Argon) Fixed R f
(+
D C ) M S 2 RF 10
V
m
1
m
2
m
3
Ss
a r e u s e d t
i t
s e l e c t e d analyte(s)
Quattro micro T r a i n i n g Course 46
Thia_1G07_007 Sb (21.00); Sm (Mn, 2x3) 100
SIR Example
Thiamethoxam MW=291 Metabolite MW= 250
%
Quattro micro’SIR of 2 Channels ES+ 291.8 1.07e4
SIRof(M+H) mlz = 292
Th’_1G07_007 Sb (2,1.00); Sm (Mn. 2x3)
100 . SIR of 2 Channels ES÷ 249.8 1.61 e4
.50
8.00 8.50 9.00 9.50 io.&5
Daughter Ion Scan
MSI.
Fixed Collision Cell (w/Argon) 5-40 eV MS2
Scanning
m
1
m
2
Determines Collision Induced a particular parent ion
I
Dissociation (CID) produced daughter ions of
Quattro micro Training Course 47
Daughter Ion Scan
—
Effect of Changing Collision Energy
MS/MS Spectra of Chlorpheniramine (MW=274)
Daughter Ions of m/z=275
25
Collision Energy = 5 eV
M+H...,
100• 275 100 230 °
Collision Energy = 12 eV
275 100 230
°“°Collision Energy = 17 eV
150 160 170 180 190 200 210 220 230 240 250 260 270 280 290
Daughter Ion Scan
—
Effect of Changing Collision Energy (Cont.)
MS/MS Spectra of
230
Clorpheniramine
Collision Energy = 17 eV
Ia
Daughter Ions of m/z=275
M+H
100
Collision Energy = 30 eV
167 230 221_2O2 100
167
Collision Energy = 38 eV
180
194 201
230
Il—I,,•i,Jz
150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 Quattro micro Training Course
48
Daughter Ion Scans
— Propranolol ExampleMS/MS Spectra of Propranolol (MW=259) Daughter Ions of m/z=260
X_PROPRANOLOL_MSMS 1(1.015) Daughters of 260ES+ 100 260 1.63e7 116 183
M+H
7274
98 157 86 155 218
L I I I A AA I I I I I I60 80 100 120 140 160 180 200 220 240 260 280
MS/MS spectra can often be very complicated. Maximum daughter ion
signal obtained using a collision energy of 18 eV. Increasing the collision energy beyond this level, led to more CID of the parent M+H ion, but also led to more CID of the daughter ions resulting is lower daughter ion signals.
Daughter Ion Scans
— ThiamethoxamTHIAJNFUSO2 1(0.176)
From MS Scan of Infused Sample
Scan ES+ 100
1 1197
5.57e6
Thiamethoxam
2
THIAJNFUS_03 1(1.017) Daughters of 292ES+
lao
211
3.90e6
Daughter Ion Scan
%
Daughter Ions of m/z=292 Thiamethoxam Ion
11
THIA_INFUS_04 1 (1.475) Daughters of 250ES
9
6.9706
Daughter Ion Scan
1%
Daughter Ions of m/z=250 Metabolite Ion
mlz 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330
Quattro micro Training Course
M S
S
Multiply
Charged I
s
The
most intense i
s a r e normally used for
MS-MS
even
i f
t h e y are multiply charged
Multiply
charged i
s may require higher collision
gas pressures than singly charged ions
Fragment ions can be larger
in
apparent mass t h a n the
multiply
charged precursor i
s
V a n c
y c i n ( M + 2 H )
H O O
M)ç5
724.9
H
3
C
OHO O
p6,9
HO/
OH OH(M+H)+ Magnified
1451.6
14
by 15X
1452.6
17.9
1453.6 1418.5
Ch t
i g
4bI4.nh,z
500 700 800 900 1000
1100 1200
1300 1400 1500
Quattro micro Training Course 5
MS Spectra of Vancomycin
VANCO_14_MS
1 (0.284) Sm (SO, 2x0.60)Scan ES+ 14506 6.39e5 100
0:mlz
1453.6 1446 1447 1448 1449 1450 1451 1452 1453
1454 1455 1456 VANCO_15_MS
1 (2.055) Sm (SO, 2x0.60)Scan ES+ 7249 7259 2.34e7 100 727.4
7 .9 %
, . . . m/z721 722 723 724 725 726 727 728 729 730 731
Vancomycin Daughter Ions of (M+2H) Ion (m/z= 725)
Quattro microTM
VANCO 04 MSMS 1 (2.055) Daughters of 725ES+ 144.1
x5 1.28e7
Spectrum Magnified by 5X Singly Charged from m/z = 600 to 1500
4— Daughter Ion
%•
1307.3
Unfragmented
725.6
Singly Charged Doubly Charged
Daughter Ion —b Parent Ion
1145.3
.200 400 600 800 1000 1200 1400
Quattro micro Training Course
51
)
Closer Look
at Daughter Ions
( M + 2 H )
Ion
(m/z=725)
V A N C O 05_MSMS
1(0.890) Sm ( S G , 2x0.60) V A N C O _ 5 _ M S M S 1(0.890) Sm ( S G , 2x0.60)
—1442 5.59e6 1307.3 5.43e5 100 100 13053
nrO
.—‘.,
i i IiZ
130 1 3 9 . 1
im/z 140 142 144 146 148 1304 1306 1 3 8 1310
Note:
L M
& HM
MS1
were opened up t
all
isotopic forms of t h e m/z=725 i
into t h e collision cell. ‘ I s
e Peaks’ a r e
1
Da
apart.
C H
3
P
s i b l e HO” F r a g m e n t a t i
O
c
L O H
F r a g m e n t a t i
—...
——CI I
N
INH
NH
‘
CH
3
0I
NH
2
ICH
3
/
O H
O b s e r v e d D a u g h t e r ions
H O OH
m / z
=
725 P a r e n t
ion
a r e s e e n at m / z
=
1 3 5 a n d 144
5 2 Quattro m i c r
Course
Example of MS/MS of a Doubly Charge Ion
[Glul]-Fibrinopeptide B Glu-Giy-Vai-Asn-Asp-Asn-Glu-Glu-Gly-Phe-Phe-Ser-Aia-Arg GluFib 5 pmoiluL in AcnlWat infused: 4 uLlmin
GluFib_Parent 1(2.191) Sm (SG, 2x0.50) Scan ES+ 100 785.7 x100 6,34e7
(M+2H)—4
MS Scan Magnified by 100
%
+
1570.4
(M+H)
—+
333.1 480.1 1221.1 Ii
I
1285.2
II
I
684.1
Ii4Jmiz
200 400 600 800 1000 1200 1400
Example of Daughter Ions From a Doubly Charge Ion
[GIul]-Fibrinopeptide B Giu-Giy-VaI-Asn-Asp-Asn-GIu-GIu-Giy-Phe-Phe-Ser-AIa-Arg
11
10 9
GiuFib 5 Dmoi!uL in AcnlWat infused: 4 uUmin
GluFib_Parent 1(2.191) Sm (SG, 2x0.50) Scan ES+ 100 785.7 x100 6.34e7
(M+2H)’ j MS Scan Magnfied by 100 (M+H) -) 1570.4
33?1
480.1 1221.1
Iii
I 684.1
II
I0 4
i.j:r#r..’.,,,,- •-,-
GIuFib_Dau
1 (3.370) Sm (SG, 2x0.50)Daughters of 786ES+ ioo 186.9 333.0 Y’6684.0
y 7
289e6 8129 480.0 Daughter Scan of mlz=786
1%
Yg 240.0
Y942.0 1056.0
‘lO ‘11
I382.0 627.0 1171.0 1285.0 ill
I I Im/z 200 400 600 800 1000 1200 1400
Quattro micro Training Course
p cLL
Mixiso I1314 022 SIR xl I Chxnncl ES. 1.31 TIC 100 5.95e6From a Sample that is
/
60 nglmL Ketoprofen / 60 nglmL Fenbufen
%Ketoprofen Fenbufen
Th Time 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 MIxIso_l SI 4_023 SIR of I Chonnel EOn 1.31 TIC 100 6.03e6From a Sample that is 60 nglmL Ketoprofen
/
6nglmLFenbufen
/
%Ketoprofen Fenbufen??
1.40 1.50 1.60 1.70MRM (Multiple Reaction Monitoring)
MS1 Collision MS2 Cell (w/Argon)
Fixed 5-40 eV Fixed m,
m
MRM’s are used to monitor selected analyte(s) via their daughter ions
mpie I
Ion Chromatograms from SIR’s of m1z255 Fenbufen
OOH
Ketoprofen
QOOH
Both have a MW of 254
0.00 0.óO 1.óO 1.10 1.20
1 30Quattro micro Training Course 54
E0 From SIR of ,
m1z255
C .. ..
Ti
080 0.90 100 110 120 130 1,40 150 160 1.70 hx.h> lGn4 24 MR&4 o2 Channol, 5:5’ 10017 25525.25g2
From MRM of mIz 255> 209
Ketoprofen
.%
MRM 012 Channel, ESC 142 255,25>2372[\
0 0604From MRM of
/ \
Fenbufen rn!z=255>237
,>_,-nn;/”
% SEnis L1G14...024 100 580 0.90 100 110 125 130 140 150 1.60 170C
p a r i n g
MRM
and
SIR Example
2
SIR’sofalonglmL Standard Solution
& Metabolite
SIR’s of Sample of 10 nglmL Thiamethoxam
& Metabolite in a
Fruit Matrix C
p a r i n g
MRM
a n d SIR - Example
I
(cont.)
Ion Chromatograms from SIR and MRM Analyses
60 ng!mL Ketoprofen
6 ng/mL Fenbufen
hia 1007 007 Sb (21.00); Sm (Mn. 2x3) SIR of 2 Channels ES* 100 291.6 1.076’Thiamethoxam
hiaiGO7_007 Sb (2,1.00); Sm iMn, 2.31
SIR 012 Channels ES> 50800 8,50 900 950
iomS
Peak Labeled an impurity in the fruit matrix sample is also present in blank matrix samples.
Ela 002 Sb 12 1.00 1. Sm (Mn, 2.31 SIR 012 Channels ES’JNo]
m e t h
a J
Eia_1007_002 Sb (2.1.00); Sm (Mn, 2>3) SIR 012 Channels ES. 100 249.0
_____________________
1 42e4Metabolite??_[—-.-*
\
.
Time 511900 550
91111550 1000
Quattro micro Training Course 55
Comparing MRM and SIR Example 2 (Continued)
MRM’s of Sample of 10 ng!mL Thiamethoxam
& Metabolite in a Fruit Matrix
Mi SpIted with Lww Stnd.,d
Thia_1G04313 Sb (21.00 ); Sm (Mn, 2x3)
famethoxam
OuattrD mIvro’MRM of 2 Channels ES+
291.8> 210.8 433 Thi’ 1G04
313 Sb (2,1 .00 ); Sm (Mn, 2x3) 100
% MRM of 2 Channels ES÷
249.8 > 168.8 463
y.50 8.00 8.50 9.00 9.50
i0.d6w
Peaks Labeled as Thiamethoxam and Metabolite are not present in blank matrix samples.
Parent Ion Scan
Consider a class of compounds that are similar in structure: Different Compounds That Are Somewhat Similar In Structure Different Neutral Fragments Same Charged Fragment
CID
+
CID
+
Parent Ion Scans can be used to detect those compounds whose molecular ions produce the same charge fragment. Quattro micro Training Course 56
PAR (Parent Ion Scan)
MS1
Collision MS2 Cell (w/Argon)
Scanning 5-40 eV
Fixed m,
Im
2
m
3
Find ions that will produce via CID, daughter ions with a particular m/z
Parent Ion Scan Example: Lets look at the MS/MS Daughter Ion Scan of a Beta Blocker, Propranolol
X_PROPRANOLOL_MSMS 1 (1.015) Daughters of 260ES+ 100 260 1.63e7
Major Daughter Ion
at m/z=116
M+H
98 157 86 155
I 218
J
141 J 165
I I Au i i1
i irnlz
60 80 100 120 140 160 180 200 220 240 260 280
Quattro micro Training Course
57
Example of B e t a B l
k e r s whose
M+H
Ion
All
Produce
a
m / z =
116 Daughter Ion
D a u g h t e r I
m / z =
116 p r
u c e d
b y CID
at spot
indicated by
—‘--
line.
H2N
HO
Pindolol M W = 2 4 8
H2N
H2N
H
Metoprolol MW=267 Propranolol M W = 2 5 9
Parent
Ion
Scan Example:
From a mixture,
determine which components a r e from t h i s c l a s s
blockers
F
e x a m p l e , t h i s
i s a MS
S c a n f r
a mixture of
components.
MD(_MS
1(1,025> 1001 2 3 5 %
I
S c a n ES+ 1.56e9
280 2 4 9
2 6 8 260 2 6 7 Ii
230 235 240 245 250 255 260 265 270 275 280 285 290 2 9 5 m l z 295 300
T
which components belong t
h i s c l a s s
b e t a blockers,
you could p e r f
m a daughter
ion
s c a n f
daughter
ions of
t h e m/z=235 p a r e n t
ion
a n d
see
i f
t h e m/z=235
ion
p r
u c e s
a
m / z =
116
daughter
ion,
t h e n a n
h e r daughter
i
s c a n
m/z=249, t h e n 260, etc. Alternatively, you could do
e p a r e n t
ion
s c a n f
p a r e n t s
t h e m/z=116 daughter
ion.
Quattro m i c r
Course
5 8
PARENT-MSMS-003
1 (1.103>Parents of 97AP* 3154 1.50e6
100
Progesterone
289.4
17-a Hydroxy Testosterone Progesterone
% 331 5 C50 75 100 125 150 175 200 225 250 275 300 325 350 375 400
Parent Ion Scan Example:
MS Scan of Mixture of Components. MiX_MS 1(1.025)
235
% Scan ES+
1.56e9
249
268
260
267
MIX
100- ‘AR 1 (2.070)
280 295
a %-
249
Pindolol Parents of 116ES+ 5.63e7 Metoprolol Propranolol
260 268
Parent Ion Scan of Mixture: Parent Ions of the m/z= 116 Daughter Ion
0—
230 240 250 260 270 280 290 300
Parent Ion Scan
17-OHP_DAU_001 1(0.527> 97.1 100 %
Daughter Scan for Products
331 Ions
from a 17-a Hydroxy Progesterone Sample 17-a Hydroxyprogesterone
MW 330
Daughters of 331 ES* 2.49e6
109.1 ii flI hil 5. ii I331.3
25
f.
2
713
375 100 125 150 175 200 225 250 275 300 325 350 375 400
‘çrhere is a class of steriods whose molecular ions (M+H) produce
the mlz97 and mlz=109 daughter ions when they undergo CID Parent Scan for Parents
from a Mixture
Quattro micro Training Course
59
Constant Neutral
L
s
Different Compounds That Are Somewhat Similar In Structure Same Neutral Fragment Different Charged Fragments
CID
+
CID
+
Constant Neutral Loss Scans can be used to detect those compounds whose molecular ions produce the same neutral fragment.
Constant Neutral
L
s
( C N L )
Scan
MS1
Scanning
Collision Cell (w/Argon) 5-40 eV MS2 Scanning
m
1
m
2
m
Qi and Q2 scan together. m/z of Q2 is m/z of Qi minus an offset.
m
2
Quattro micro Training Course 60
Tricyclic Antidepressants that All Produce a
Daughter Ion After a CID Loss of m/z= 195
flNH*
Charged Fragment
NH
Neutral Fragment Desipramine (MW=195)
H
Charged Fragment
NH
Neutral Fragment Trimipramine
I
(NW=195)
CNL Example: From a mixture, determine which
components are from this class of antidepressants
MIX_MS 1(1.025)
For example, this is a MS Scan
Scan ES’-
100
From a mixture of components.
268 260 249 260 267 % 295
r,.,
. . . ..
m/z 230 235 240 245
250 255 260 265 270 275 280 285 290 295 300
To determine which components belong to this class of tricyclic anti-
depressants, you could perform a daughter ion scan for daughter ions of the m/z=235 parent ion and see if the m/z=235 produces a daughter ion that is lighter by m/z= 195 (235-195=40), then repeat this with daughter ion scans
Alternatively, you could do one Constant Neutral Loss scan for losses of 195.
Quattro micro Training Course
61
Constant
Neutral Loss S c a n Example
MIX M S
1 ( 1 2 5 )
M S
Scan of M i x t u r e
s c
Es+
2 3 5 1 . 5 6 e 9 2 6 8 2 8 M I X _ C N L
1
(2.017) Neutral Loss 195ES+ 100-
C
s t a n t Neutral
L
s
Scan of Mixture
295
5 . 1 e 7
P a r e n t Ions which
267 _
p r
u c e D a u g h t e r I
s
T r i m i p r a m i n e
°
with a Loss of
m f z =
195
f r
t h e Parent
I
D e s i p r a m i n e
I I
230 240 2 5 260 270 2 8 2 9 3
C
s t a n t N e u t r a l
L
s
(CNL)
Scan
FENSO3 1(2017) Neu0(
Lc
44ES-
100243
Flurbifen Ketoprofen
205
I b u p r
e n
163 ‘ “ 1 ’ ,1W2 160 170 180 190 200 210 220 230 240 250 260 270 280Negative Electrospray Neutral Loss Scan for loss
m l z
=
4 4 D a f r
a M i x t u r e
C
p
n d s
Quattro m i c r
r a i n i n g
Course
6 2
Analysis of Amino Acids by MS/MS
— CNLOH
Phenylalanine
N
HO
N’
Tyrosine
Analysis of Amino Acids by MS/MS
— CNLO
—Deny
—“
/
“
/ mlz=222 Phenylalanine Deny
rN—
HOcJ’
Hoi
mlz = 238 Tyrosine
Quattro micro Training Course 63
A n a l y s i s
MSIMS
—C N L
OH
0IZ2220
Phenylalanine m l z
=
120 Deny
. l . D .
HO
/ mIz 238
HO ‘
Tyrosine m ! z
=
136 CID
R e s u l t s
i n
t h e L
s
102 D a
A n a l y s i s
by MSIMS
—CNL
D e r i v i t z e d Amino Acid
Mix
Infused
10 ijLlmin
Quattro
micro
1M
NeoLynxTestMix_CNL 1(0.510) Neutral Loss 1O2ES+ 188.0
191.1
4.28e7
IULf\
Leucine Phenylalanine
\
222.1
T y r
i n e
/
a,,.
227.2
\
23.12/40.1 209.0 206.1
I i mlz180 185 190 195 200 205 210 215 220 225 230 235 240 245 250
O t h e r p e a k s are from deuterated forms of t h e s e a m i n
c i d s
Quattro micro Training Course 6 4
Phospholipids — Plant Extracts
100
MS Scan of
Plant Extract
%
LrLrniz
U400 500 600 700 800 900 1000
L-Phosphatidylcholine
H
COOCR”
(R” = H for lyso PC (PC and lyso PC)
IR’COOCH
L-Phosphatidylethanolamine
ii
(PE and lyso PE) +
C—O—P—0—CH
—CH
X
3
X = CH
3
for PC & lyso
PC}
X = H for PE and lyso PE
Phospholipids — Precursor Ion Scan Example
100
MS Scan of
Plant Extract
%
400 500 600 700 800 900 1000
L-Phosphatidylcholine
H
CO0CR”
(R” = H for lyso PC) (PC and lyso PC) R’COOCH Positive ion electrospray:
II
When PC and lysoPC ionize
+
and fragment at the red
H
2
C
— 0 — P — 0 — CH2
— CH2
— N (CH3
3
arrow, the bottom right
charged ion with m/z=184.
65 Quattro micro Training Course
Phospholipids
— Precursor Ion Scan Example100
MS Scan of
ant
Extract
L,Limiz
4C
500 600 700 800 900 1000
100 MS/MS Precursor Scan
for Precursors of
0/
m/z= 184 to detect different forms of
PC and lyso PC urArr,.
.
r T .
mlz 400 500 600 700 800 900 1000
Samples provided by Dr. Ruth Welti, Kansas State University, Manhattan, KS
Phospholipids — Constant Neutral Loss Example
100
MS Scan of
PntExtradiL,
400 500 600 700 800 900 1000
L-Phosphatidylethanolamine
H
COOCR”
(R” = H for lyso PE) (PE and lyso PE) R’COOCH Positive ion electrospray: When PE and lyso PE ionize
H
2
c
— 0 — p — 0 — CH2
— CH2
— NH3
and fragment at the red
.f
II
arrow, the bottom right fragment leaves as a neutral
I
fragment of mass 141.
Quattro micro Training Course 66
Phospholipids — Constant Neutral Loss Example
100-
MS Scan of
Plant Extract
MS Scan
%- 0-
400 500 600 700 800 900 1000
100-
MS/MS CNL Scan for
Neutral Losses of
%-
different forms of
141 amu to detect
i m/zPE and lyso PE
Viiii
400 500 600 700 800 900 1000
Samples provided by Dr. Ruth Welti, Kansas State University, Manhattan, KS
Phospholipids — Neutral Loss and Precursor Ion
100-
MS Scan of MS Scan
Plant Extract
%- 0-
400 500 600 700 800 900 1000
________
______________
<- PC and iyso PC by
100 J
Precursorlon Scan (Parent Ion Scan)
OLPE and lyso PE by CNL ->
Li’’i••
.1-’.1.—,
‘ii
iIT)/Z
400 500 600 700 800 900 1000
Samples provided by Dr. Ruth Welti, Kansas State University, Manhattan, KS
67 Quattro micro Training Course
E x a m p l e
a M S
S c a n
a
natural product pharmaceutical.
MS
S c a n
N a t u r a l Product Pharmaceutical Quattro
microTM
MS Example
1(1.009) Scan ES- 1
349.1
2.82e8 %
21
MS
S c a n
269.1 297.1
dl
347.0
\
9
0.0
365.13791 220
240 260 280
3
320 340 360 380 400 420 440
C N L
S c a n
N a t u r a l Product P h a r m a c e u t i c a l Quattro
microTM
C N L Example
1(2.017) Neutral Loss 80E5-
349.1
4.36e7
C N L
S c a n f
l
s
m l z = 8 . A c t i v e
i n g r e d i e n t s
i n
mixture
,
w
l d e x h i b i t
a
loss
8 .
a
350.2
345J
/ 3 6 5 . 2
I I ii i I I Z 200 220 240 260 280 300 320 340 360 380 400 420 440 349.1
M S
S c a n
N a t u r a l Product P h a r m a c e u t i c a l
M S Example
1(1.009)
100•
M S
S c a n
269.1 297.1
.j.
Quattro m i c r
S c a n
E S
2.82e8
3 4 7
345’
350.0 365.1 379.1
ii.,,,
1
rr1,
1,i 1 i J z
200 220 240 260 280 300 320 340 360 380 400 420 440
Quattro m i c r
Course
6 8
MS Scan of Natural Product Pharmaceutical
Quattro micro
MS_Example 1 (1.009>
Scan ES
1oo.°
2.82e8
l
mYTmrr1rrT 297.1 365.1
I
379.1
399.14j3.2
15.1 431.1
L
%.
21
.mlz 220 240 260 280 300 320 340 360 380 400 420 440
CNL Scan of Natural Product Pharmaceutical
Quattro microTM
CNL_ Example
1 (2.017)Neutral Loss 8OES-
ioo t(10 4.36e7
%.
IFCNL Scan Magnified lOX. Only those components in
345.1
the CNL Scan are active components.
23.1
200 220 240 260 280
300
320 340
>51 .1
36 5.2
hrrr,
. .ir. . .. . I-m/z 360 380 400 420 440
MS Scan
2691
Magnified
lox
253.0 213.1 230.9 283.0
di
345.0 398.1
I.
rrrnmTmvTrrrrrrn-n
Quattro Instrument Tune Page Quattro micro
MICROMASS
M r .0ClG
Quattro micro Training Course 69
C
C
3
C)
CO
C-)
Cl) CD
m
x
3
CD
—1=
D)
—
00
C D
Cl)
C
3
CD
C,
C,
CD
C’,
c i ,
Cn
—
C f l 3
(1)
— — — — — — — — — — — — — — — — — — —
Tune P a g e
b r a i n
t h e
m a s s spec
mode
is
s e t
a r e
set.
and Collision
gases are
controlled.
identified and
ions
a r e determined and optimized
is
s e t
Energies are determined
M T is
adjusted when n e c e s s a r y
I n s t r u m e n t Parameters Can
B e ‘Saved’
in
a File.
Instrument tune page parameters can be stored in a file for future use.
As with most MS Windows programs that save data in a file, the ‘Open’ (to
load previously saved parameters back into the mass spectrometer), ‘Save’
(store current instrument parameters) and ‘Save As’ (save the parameters under a different file name) features are available along with ‘Print’ capabilities.
ur
i
i i ’ i i
*F
ti
[Thit’! I]IIk?1111
I
Dlxi
‘r—$
‘
*4
j
EeiMoaeaiib
a a r p p b
s
fielpT,
I
il1!i1
I.___________________________________
m
___________________‘
‘
I
1.-I
Use the
‘New’, ‘Open’, ‘Save’ or ‘Print’ buttons or
use the ‘File’ menu for these
Quattro micro Training Course
71
_____________________________
72
Quattro micro Training Course
IQuattro Micro
Current Ion Mode of the Mass Spectrometer is Operating is Shown on the Front Tab
In the example shown below, the mass spectrometer
is operating in the positive ion electrospray mode.
Ee
!onI4oc aIrbibn n: Raptins Hel
[ [s+ Source
Alaly:er I Diagnostics
j
‘-Voltages—---
I
rRI1III rkvl
1356
1i0
I
H
‘SElectr’
Electropray
________El
APcl+
’
ACan be Changed Using the
‘Ion Mode’ Menu
Nitrogen Gas and Collision Gas (Ar)
I
Quattio Micro
I J !
These Gases
Can be
File Ion Mode Calibiation
Gas Ramps Options Help
ToggledOn
andOffUsing
DIIIII
i1I1Fiij1T1 t?I1Il
Buttons or
Tune Page
E5+ Source
Menu Items
‘--Voltaaes
—--lull IVlUUO
.,IIUIdLIU1
I DI XJ
El
I 1 1 1 : J
____naiiq uun
fleip
‘Gas
i,’Collisjonas
ES+ Source Ana!yser
Voltages-— .-—--.-...-..--—---Inject
Gas Fail Override capillary [kV)
——J--.