Record Display for the EPA National Library Catalog


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
Additional 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
Library Call Number Additional Info Location Last
NTIS  PB89-169858 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 109p
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.