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Measurement of polychlorinated biphenyls and polycyclic aromatic hydrocarbons in air with a diffusion denuder

Journal Article · · Environmental Science and Technology; (United States)
DOI:https://doi.org/10.1021/es00055a024· OSTI ID:7243164
;  [1]
  1. Indiana Univ., Bloomington, IN (United States)
A diffusion denuder using sections of capillary gas chromatographic columns as the sampling tubes was used to measure polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons in air. PCBs were sampled simultaneously with the denuders and with a filter/polyurethane foam sampler. The total (vapor and particle) concentrations measured by the two different sampling techniques were not statistically different, indicating that accurate measurements were made with the denuder. Breakthrough experiments indicate that 80% of the PCBs are collected in the first 25% of the denuder, and 99% are collected in the first 75%. Vapor-particle partitioning of 14 polycyclic aromatic hydrocarbons (PAH) was measured in Indianapolis, IN, using the denuder. Heats of desorption comparable to those of Yamasaki et al. were obtained. 24 refs., 2 figs., 3 tabs.
OSTI ID:
7243164
Journal Information:
Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 28:6; ISSN ESTHAG; ISSN 0013-936X
Country of Publication:
United States
Language:
English