also called wool sorters disease – occupational risk for imported fur workers or people working with animal hides
vector is cow
PVC filters (polyvinyl chloride)
used to sample for silica, dusts, zinc oxide
used to decontaminate biohazardous waste
Used to fully decontaminate a biohazard safety lab level 3
teflon filters (polytetrafluoroethylne)
used to sample for anthrax and sars
used for respiable dust air sampling
developed at institute of occupatonal medicine (IOM) in Scotland – 2 lpm inhalable particles inhaled by mouth and nose
real time measurements of particulate matter concentration. Light diffracted from particle.
Semi volatile sampling
semi-volatiles exist in vapor form and particulate form, move back and forth between the 2 states. Denuder or impinger or both in a series may be used to sample for semi-volatiles.
materials diffuse to walls or screen of denuder. vapors from particles/gas mixtures. walls are coated with materials to adsorb gases (NaCO2 adsorbs HCl, HNO2, SO2)
particles settle out in laminar flow. Verticle: particles with terminal settling velocity greater than air velocity are trapped, used in textile mills for cotton sampling. Horizontal: particles settle out as air passes between 2 plates.