Intercomparison of methods for the measurement of carbonaceous aerosol species. Final report
The principal goal of the study, as part of the Carbonaceous Species Methods Comparison Study, was to perform field trials at Citrus College, Glendora, CA, in August 1986 with a sampler intended to minimize positive and negative artifacts for sampling particulate carbon. In addition, organic and elemental carbon in atmospheric and laboratory-generated samples were analyzed to permit intermethod comparisons. The particulate carbon sampler consisted of a cyclone, parallel-plate diffusion denuder packed with coarse, activated alumina, and a quartz-fiber filter followed by a fluidized bed of activated alumina. The sampler failed to perform effectively in atmospheric trials; alumina showed little activity in decreasing the positive error in filter carbon sampling due to sorption of gas-phase carbonaceous material. The measurement of organic (Co) and elemental carbon (Ce) employed an optical absorption technique for Ce and a coulometer for total C (Ct). Organic carbon was then obtained by difference between Ct and Ce. In addition, organic and elemental carbon in atmospheric and laboratory-generated samples were analyzed to permit intermethod comparisons.
- Research Organization:
- California Dept. of Health Services, Berkeley (USA). Air and Industrial Hygiene Lab.
- OSTI ID:
- 5246718
- Report Number(s):
- PB-88-181672/XAB
- Resource Relation:
- Other Information: Errata sheet inserted
- Country of Publication:
- United States
- Language:
- English
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