Asbestos in Ambler Air? Reto Gier Department of Earth and - - PowerPoint PPT Presentation

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May 29, 2023 577 likes •744 views

Asbestos in Ambler Air? Reto Gier Department of Earth and Environmental Science Sigma-2 Passive Sampler German sampler, accredited by DIN for ambient air monitoring (does not require power) Typical exposure time: 1 week Sample

SLIDE 1

Asbestos in Ambler Air?

Reto Gieré Department of Earth and Environmental Science

SLIDE 2

Sigma-2 Passive Sampler

German sampler, accredited by DIN for ambient air monitoring (does not require power)

SLIDE 3

Typical exposure time: 1 week

DWD

Sampler shown in “open“ position, i.e. when sample holder is exchanged

Sample holder

SLIDE 4

Sample holder

DWD

Sticky foil à traps all airborne materials

SLIDE 5

DWD

Samples studied by optical microscopy

SLIDE 6

DWD

20 µm

Typical sample from a village

à particles can be distinguished based

n their optical properties

SLIDE 7

Example of BoRit Air

3/31-4/7/16

Various soil minerals

SLIDE 8

3/31-4/7/16

Soil minerals and plant fiber (?)

Example of BoRit Air

SLIDE 9

3/31-4/7/16

Probably a plant fiber, NOT asbestos!

Example of BoRit Air

SLIDE 10

4/7-4/14/16

Plant fiber (?), NOT asbestos! Tire abrasion particle

Example of BoRit Air

SLIDE 11

4/7-4/14/16

Various soil minerals and organic fibers

Example of BoRit Air

SLIDE 12

4/7-4/14/16

Various soil minerals and organic fibers Next picture

Example of BoRit Air

SLIDE 13

4/7-4/14/16

Probably a Feldspar crystal Probably a Quartz crystal

Example of BoRit Air

SLIDE 14

Preliminary results (5 weeks of sampling)

no asbestos detected
lots of soil minerals
tire abrasion particles
plant fibers
dog hair (?)