Collection of nonpolar organic compounds from ambient air using polyurethane foam-granular adsorbent sandwich cartridges.
Glass cartridges containing 6-10 g of Tenax-GC or 15 g of XAD-2 resin packed between two slices of polyurethane foam (PUF) were used in a General Metal Works PS-1 high-volume sampler to collect chlorobenzenes (CBs) containing three to six chlorine atoms, hexachlorocyclohexanes (HCHs), and two-ring aromatic hydrocarbons from 35-385 m3 of air. Laboratory experiments were run by vaporizing known quantities of analytes into a clean airstream for sampling by the PS-1 system at 20 degrees C. Collection efficiencies, determined from mass balance of the quantities introduced and recovered, ranged from 70 to 120% for individual compounds and averaged 93% overall. Penetration of analytes to backup adsorbent traps showed an inverse correlation to vapor pressure. The method was used to collect the above compounds from urban and rural air.
Zaranski
M T
MT
Department of Chemistry, University of South Carolina, Columbia 29208.
Patton
G W
GW
McConnell
L L
LL
Bidleman
T F
TF
Mulik
J D
JD
D000393:Air Pollutants / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D002722:Chlorobenzenes / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000032:analysis; D006838:Hydrocarbons / Q000032:analysis*; D011140:Polyurethanes
D000393:Air Pollutants; D002722:Chlorobenzenes; D006838:Hydrocarbons; D011140:Polyurethanes; D001556:Hexachlorocyclohexane