Vertical distribution and environmental significance of PAHs in soil profiles in Beijing,China |
| |
| Authors: | Qing Wei Bu Zhi Huan Zhang Song Lu Feng Peng He |
| |
| Institution: | (1) School of Environment, Beijing Normal University, No. 19, Xinjiekouwai Street, Beijing, 100875, P.R. China;(2) State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, No. 18, Fuxue Road Changping, Beijing, 102200, P.R. China |
| |
| Abstract: | Vertical distribution of both the concentration and composition of polycyclic aromatic hydrocarbons (PAHs) in ten profiles
in Beijing has been investigated. The results showed that PAH concentrations and compositions in topsoil from different sampling
sites were different. PAH concentrations were much higher in topsoil of the investigated urban area, industrial region, and
paddy field with wastewater irrigation than in other areas. Moreover, PAH concentrations in topsoil were much higher than
those at greater depth, where the concentrations were relatively consistent in most soil profiles. The fingerprints of PAHs
in the samples from topsoil (0–30 cm) in the same profiles were similar and were obviously different from those at greater
depth, suggesting that PAH sources were consistent in topsoil samples and were discriminating between topsoil and deeper soils.
PAHs in topsoil mainly arose from mixed sources of combustion of liquid fuel, coal, and/or wood, as well as wastewater irrigation,
while those at greater depth were derived from soil genesis and the process of soil formation. |
| |
| Keywords: | PAHs Soil Vertical distribution Source identification Beijing |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
|
