Clausius-Clapeyron: Calculation of H vap for PCB congeners at - - PowerPoint PPT Presentation

Clausius-Clapeyron: Calculation of ∆Hvap for PCB congeners at Dexter, Michigan

PCB 18: Doug

Clausius-Clapeyron: Heat of Vaporization of PCB 18 y =

• 3176.8x - 19.107

R2 = 0.3637

• 32
• 32
• 31
• 31
• 30
• 30
• 29
• 29

0.00330 0.00340 0.00350 0.00360 0.00370 0.00380 0.00390 0.00400 Inv e r se Te mpe r a t ur e ( K- 1)

∆Hvap = 26.4kJ/mol Henry’s Law Constant: 0.025kJ/mol

PCB 18: Doug

Residuals

• 2
• 1

1 2 0.00330 0.00340 0.00350 0.00360 0.00370 0.00380 0.00390 0.00400 Inv e r se Te mp ( K- 1) Homoscedascity?- A lot more dat a points early on.

PCB 18: Doug

The low Significance F value of 3.4E-7 indicates there is a 95% confidence that there is a low correlation (R2 = 0.36) between ln(P) and T-1 based on the data at Dexter.

PCB 33: Brad

∆Hvap = 38.9 kJ/mol Henry’s Law Constant: 0.0162 kJ/mol

PCB 33: Brad

Residual Plot for Dexter, MI (2,3,4-trichlorobiphenyl)

• 2

2 0.0032 0.0034 0.0036 0.0038 0.004 Temperature-1 Residuals

PCB 33: Brad

The low Significance F value of 7.12E-10 indicates there is a 95% confidence that there is a high correlation (R2 = 0.51) between ln(P) and T-1 based on the data at Dexter.

PCB 56(60): Jenny

Clausius- Clapeyron Plot of PCB Congener 5 6 ( + 6 0 ) for Dexter, Michigan

y = -5559.1x - 11.078 R2 = 0.6515

• 33
• 32.5
• 32
• 31.5
• 31
• 30.5
• 30
• 29.5
• 29
• 28.5

3.30000E- 03 3.40000E- 03 3.50000E- 03 3.60000E- 03 3.70000E- 03 3.80000E- 03 3.90000E- 03 4.00000E- 03 I nv e r se Te m pe r a tur e ( 1 / K) ln( Partial Pressure) ( kPa)

∆Hvap = 46.2 kJ/mol Henry’s Law Constant: 0.013kJ/mol

PCB 56(60): Jenny

X Va r i a bl e 1 Re si dua l P l ot

• 1.5
• 1
• 0.5

0.5 1 1.5 3.30000E-03 3.40000E-03 3.50000E-03 3.60000E-03 3.70000E-03 3.80000E-03 3.90000E-03 4.00000E-03 X Va r i a bl e 1

PCB 56(60): Jenny

The low Significance F value of 3.4E-14 indicates there is a 95% confidence that there is a strong correlation (R2 = 0.65) between ln(P) and T-1 based on the data at Dexter.

PCB 138: Vish

Dexter (DEX) Congener 138 (+163) LN(P) VS 1000/T

y = -4.0956x - 17.44 R

2 = 0.5653

• 34
• 33.5
• 33
• 32.5
• 32
• 31.5
• 31
• 30.5
• 30
• 29.5

3.3 3.4 3.5 3.6 3.7 3.8 3.9 4 1000/T L N ( P )

∆Hvap = 34.1 kJ/mol Henry’s Law Constant: 0.00688 kJ/mol

PCB 138: Vish

Residual Plot

• 2
• 1.5
• 1
• 0.5

0.5 1 1.5 2 2.5 3.2 3.4 3.6 3.8 4 X Variable 1 Residuals

PCB 138: Vish

The low Significance F value of 2.0E-11 indicates there is a 95% confidence that there is a strong correlation (R2 = 0.56) between ln(P) and T-1 based on the data at Dexter.

Dexter, MI