Record Display for the EPA National Library Catalog


Main Title Evaluation of High Volume Particle Sampling and Sample Handling Protocols for Ambient Urban Air Mutagenicity Determinations.
Author Watts, R. R. ; Hoffman, A. J. ; Wilkins, M. C. ; Brooks, L. R. ; Warren, S. H. ;
CORP Author Environmental Health Research and Testing, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC.
Publisher c1992
Year Published 1992
Report Number EPA-68-02-4456; EPA/600/J-92/189;
Stock Number PB92-188952
Additional Subjects Air pollution sampling ; Urban areas ; Sample preparation ; Mutagens ; Air filters ; Performance evaluation ; Organic compounds ; Materials recovery ; Particles ; Reprints ; High volume particle sampling
Library Call Number Additional Info Location Last
NTIS  PB92-188952 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
An investigation of high volume particle sampling and sample handling procedures was undertaken to evaluate variations of protocols being used by the U.S. Environmental Protection Agency. These protocols are used in urban ambient air studies which collect ambient and source samples for subsequent mutagenicity analysis of the organic extracts of the aerosol fraction. Specific protocol issues investigated include: (1) duration of sampling period, (2) type of filter media used to collect air particles, (3) necessity for cryogenic field site storage and dry ice shipping of filter samples, and (4) sample handling at the receiving laboratory. Results indicate that the sample handling variations and collection period variables had no significant effect on recovery of organics or mutagens. However, a filter type difference was observed. The recovery of organics and mutagens was significantly greater for Teflon impregnated glass fiber (TIGF) filters than for glass fiber or quartz. Results from a second phase of study indicated differences in extraction efficiencies for these filter types.