OLS : Record

RECORD NUMBER: 27 OF 889

Main Title Annular Denuder Sampler for Phase-Distributed Semivolatile Organic Chemicals.
Author Coutant, R. W.; Callahan, P. J.; Chuang, J. C.;
CORP Author Battelle Columbus Div., OH.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Mar 89
Year Published 1989
Report Number EPA-68-02-4127; EPA/600/3-89/029;
Stock Number PB89-169858
Subjects Aromatic polycyclic hydrocarbons; Mathematical models; Particle size distribution; Field tests; Performance evaluation; Design criteria; Graphs(Charts); Computer programs; Tables(Data); Comparison; Winter; Summer; Experimental design; High volume samplers; Air pollution sampling; Particulate sampling; Volatile organic compounds; Denuder samplers; Indoor air pollution; Air quality
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB89-169858 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/24/1989
Collation 109p
Abstract A compact compound annular denuder, with a removal efficiency for volatile polynuclear aromatic hydrocarbons (PAH) of at least 90% at flow rates of up to 200 L/min, was designed for use with the PS-1 sampler. Laboratory tests of this denuder showed no detectable (< 10%) removal of ambient particulate matter larger than 0.1 micrometer mean diameter at flow rates of 100-200 L/min. The vapor collection efficiency, as measured with naphthalene, was better than 95%, and the capacity for removal of approximately 180 micrograms of naphthalene was better than 90%. The field experiments consisted of three series: (1) outdoors during the winter; (2) indoors within a laboratory; and (3) outdoors during the summer. In these experiments a denuder difference approach was followed to monitor the phase distributions of 18 PAH. The results in general are consistent with previous work and extend the overall body of information on the phase distributions of PAH and their tendencies for artifact formation as a result of volatilization during sampling. Phase distributions for PAH were shown to be well represented by the Dubrinin-Radushkevich isotherm under both summer and winter conditions.
Supplementary Notes Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Category Codes 68A
NTIS Prices PC A06/MF A01
Primary Description 600/09
Document Type NT
Control Number 916628884
Cataloging Source NTIS/MT
Origin NTIS
Type CAT