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Physical Properties of Individual Groundwater Chemicals
Published in John H. Montgomery, Thomas Roy Crompton, Environmental Chemicals Desk Reference, 2017
John H. Montgomery, Thomas Roy Crompton
Benzo[e]pyrene is produced from the combustion of tobacco and petroleum fuels. It also occurs in low-octane gasoline (0.18–0.87 mg/kg), high-octane gasoline (0.45–1.82 mg/kg), used motor oil (92.2–278.4 mg/kg), asphalt (≤0.0052 wt%), coal tar pitch (≤0.70 wt%), cigarette smoke (3 μg/1,000 cigarettes), and gasoline exhaust (quoted, Verschueren, 1983). Lehmann et al. (1984) reported a benzo[e]pyrene concentration of 0.02 mg/g in a commercial anthracene oil.
Concentrations of aliphatic and polycyclic aromatic hydrocarbons in ambient PM2.5 and PM10 particulates in Doha, Qatar
Published in Journal of the Air & Waste Management Association, 2019
Wasim Javed, Minas Iakovides, Euripides G. Stephanou, Jack M. Wolfson, Petros Koutrakis, Bing Guo
Benzo[b + j]fluoranthene (Bb + jF) was the most abundant PAH member in both fine and coarse particles (0.073 and 0.088 ng m−3 average concentration), accounting for 13.1% and 12.5% of ΣPAHs in PM2.5 and PM10, respectively (Figure 3). Among the other quantified PAHs, chrysene (Chr), benzo[e]pyrene (BeP), benzo[ghi]perylene (BghiP), and pyrene (Pyr) were the most abundant ones that are likely to be of pyrolytic origin from vehicular emissions (Mikuška, Křůmal, and Večeřa 2015; Zhang et al. 2016). Weekly patterns of concentrations in this study showed a statistically significant (p < 0.01) difference in PAH concentrations when comparing weekdays (n = 30) and weekends (n = 4), with higher levels during weekdays (Figure S4), indicating a considerable contribution from vehicular activities in the area (Sanchez-Soberon et al. 2016). The nondetection in particulate samples of PM2.5 and PM10 samples of retene (Ret), a PAH that is mostly formed by thermal degradation of resin compounds in wood and plant, and has been proposed as a tracer for conifer combustion sources and can occur in both gas and particulate phases of the atmosphere (Simoneit et al. 2004), suggests either the lack of wood/biomass combustion emissions in the area (El-Mubarak et al. 2014), or that it may be virtually all in gas phase (and not measured in this study) due to the elevated temperatures observed in the study area.