Dynamic Calibration and Data Interpretation of a Light-Scattering Instrument |
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| Authors: | Peter K Mueller PhD Robert G Givens AB |
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| Institution: | 1. Research Chemist , Air and Industrial Hygiene Laboratory, California State Department of, Public Health , Berkeley , California , USA;2. Instrument Specialist , Bay Area Air Pollution Control, District , San Francisco , California , USA |
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| Abstract: | Size distributions of sulfate aerosol in Cincinnati and Chicago show MMD’s of 0.4 and 0.3μ. Eighty to 90 percent of the sulfate measured was in the respirable size range (below 3.5 mμ), whereas about 50 percent of the total aerosol was in the respirable range. Two sampling trains were used: one, a cascade impactor followed by a filter, gave seven stages of size and sampled at one cfm. The other, a cyclone-type sampler followed by a filter, sampled at 40 cfm. The smaller samples were analyzed nephelometrically and the larger, turbidimetrically. |
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