Record Display for the EPA National Library Catalog

RECORD NUMBER: 5 OF 8

OLS Field Name OLS Field Data
Main Title Sampling Carbonaceous Aerosols: A Review of Methods and Previous Measurements.
Author Bennett, R. L. ; Stockburger, L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Nov 94
Year Published 1994
Report Number EPA/600/R-94/192;
Stock Number PB95-129060
Additional Subjects Carbonation ; Aerosols ; Environmental impacts ; Atmospheric composition ; Toxicity ; Environmental sampling ; Visibility ; Atmospheric circulation ; Particle size ; Measurement ; Concentration(Composition) ; Deposition ; Reviews ; Sorption ; Diffusion ; Filters ; Classifying ; Semivolatile organic compounds ; Artifacts ; Polynuclear aromatic hydrocarbons
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB95-129060 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/06/1995
Collation 35p
Abstract
The carbonaceous aerosols, a complex mixture of carbonate carbon, elemental carbon and organic carbon (organic compounds), are of environmental importance due to their impact on visibility and the toxicity of some of the organic compounds. A knowledge of the relative vapor and particle concentration of semivolatile organic compounds is required to understand how the compounds are transported in the atmosphere and removed by deposition. Due to the multiplicity of compounds of varying volatility in the organic aerosols, the sampling of these particles presents an extremely difficult challenge. The report, based on a literature search of measurement studies for the past twenty years, reviews the possible artifacts that can occur that result in positive and negative errors due to volatilization, sorption or reaction during the sampling processes. The sampling approaches that have been used range from single filters to complex parallel multiple component systems that employ diffusion devices to separate particles and vapors. The artifacts that were addressed by each approach are included. A representative survey of previous carbonaceous aerosol measurements are listed. The first list includes measurements of elemental carbon and organic carbon without resolution of individual organic compounds.