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Determination of polycyclic aromatic hydrocarbons in urban street dusts and their source materials by capillary gas chromatography

Journal Article · · Environmental Science and Technology; (United States)
DOI:https://doi.org/10.1021/es00078a005· OSTI ID:5453748
; ;  [1]
  1. Tokyo Univ. of Agriculture and Technology (Japan)
Molecular distributions of polycyclic aromatic hydrocarbons (PAHs) in street dust samples collected from the Tokyo metropolitan area were determined by capillary gas chromatography following HPLC fractionation. Sixty-four compounds including three- to six-ring PAHs and sulfur heterocyclics were identified by capillary GC/MS. Total PAH concentrations were in the range of a few micrograms per gram of dust. The source materials (automobile exhaust, asphalt, fuel-oil combustion products) were also analyzed. The PAH profile, especially relative abundance of alkyl-PAHs and sulfur-containing heterocyclics, indicated that PAHs in the street dusts on the heavily trafficked streets are strongly affected by automobile exhaust and those in the residential area have a somewhat more significant contribution from combustion products in stationary sources. With both types of dusts, asphalt is through to contribute only a minor part of their PAHs.
OSTI ID:
5453748
Journal Information:
Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 24:8; ISSN ESTHA; ISSN 0013-936X
Country of Publication:
United States
Language:
English