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
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-169858 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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 |
Cataloging Source |
NTIS/MT |
Control Number |
916628884 |
Origin |
NTIS |
Type |
CAT |