Asbestos in Ambler Air? Reto Gieré 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 Sampler shown in holder “open“ position, i.e. when sample holder is exchanged DWD
Sample holder Sticky foil à traps all airborne materials DWD
Samples studied by optical microscopy DWD
Typical sample from a village 20 µm à particles can be distinguished based on their optical properties DWD
Example of BoRit Air Various soil minerals 3/31-4/7/16
Example of BoRit Air Soil minerals and plant fiber (?) 3/31-4/7/16
Example of BoRit Air Probably a plant fiber, NOT asbestos! 3/31-4/7/16
Example of BoRit Air Plant fiber (?), NOT asbestos! Tire abrasion particle 4/7-4/14/16
Example of BoRit Air Various soil minerals and organic fibers 4/7-4/14/16
Example of BoRit Air Various soil minerals and organic fibers Next picture 4/7-4/14/16
Example of BoRit Air Probably a Quartz crystal Probably a Feldspar crystal 4/7-4/14/16
Preliminary results (5 weeks of sampling) - no asbestos detected - lots of soil minerals - tire abrasion particles - plant fibers - dog hair (?)
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