Vertical distribution and environmental significance of PAHs in soil profiles in Beijing, China

被引：41

作者：

Bu, Qing Wei ^{[1
,2
]}

Zhang, Zhi Huan ^{[1
]}

Lu, Song ^{[1
]}

He, Feng Peng ^{[1
]}

机构：

[1] China Univ Petr, State Key Lab Petr Resource & Prospecting, Beijing 102200, Peoples R China

[2] Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China

来源：

ENVIRONMENTAL GEOCHEMISTRY AND HEALTH | 2009年 / 31卷 / 01期

基金：

中国国家自然科学基金;

关键词：

PAHs; Soil; Vertical distribution; Source identification; Beijing; POLYCYCLIC AROMATIC-HYDROCARBONS; AGRICULTURAL SOIL; FOREST SOILS; CONTAMINATION; DEPOSITION;

D O I：

10.1007/s10653-008-9171-z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页码：119 / 131

页数：13

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