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| First female faculty meMber at Harvard |
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Dry partcle aerosols produced by mechanical processes (1um to 1mm).
Ex. Fertilizers, dry packaging |
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Very fine solid aerosol particles produced from vaporized solids (<0.1um)
Ex. Arc welding, metal fumes |
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spherical droplet aerosols produced by mechanical processes (few um to <100um)
Ex. spray painting |
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| complex mixture of solids and liquid aerosol particles, gases and vapors resulting from incomplete combustion |
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| Elongated particles with an aspect ratio greater than 3:1 |
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| Disease associated as occupational hazard for meat packers. |
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Occupational hazard for cotton workers
Ex. denim manufacturing plant |
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Inhalable (<100um)
Thoracic (<10um)
Respirable (<4um) |
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| used to decontaminate biohazardous waste |
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| also called wool sorters disease – occupational risk for imported fur workers or people working with animal hides |
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| PVC filters (polyvinyl chloride) |
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| used to sample for silica, dusts, zinc oxide |
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| used to decontaminate biohazardous waste |
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| Used to fully decontaminate a biohazard safety lab level 3 |
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teflon filters
(polytetrafluoroethylne) |
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| used to sample for anthrax and sars |
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| used for respiable dust air sampling |
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| developed at institute of occupatonal medicine (IOM) in Scotland – 2 lpm inhalable particles inhaled by mouth and nose |
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| real time measurements of particulate matter concentration. Light diffracted from particle. |
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| 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. |
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| 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) |
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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. |
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