Distribution characteristics and source analysis of PAHs in farmland soils along Shanghai traffic artery
ZHANG Xi1, YANG Jing1, LIU Min1, CHEN Xing1, WU Jian2
1. Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 200241, China;
2. Shanghai Acadamy of Environmental Sciences, Shanghai 200233, China
In order to investigate the influence of traffic emission on the accumulation of 16 polycyclic aromatic hydrocarbons (PAHs) known as priority pollutants in the surrounding farmland soils, seventy soil surface samples and two soil cores samples were collected within 500m of the Shanghai traffic artery. The concentrations, compositions and sources of 16PAHs were systematically analyzed. The results showed that the concentrations of Σ16 PAHs in the surface soils of the farmland along the Shanghai traffic artery was 23.16~21250.25ng/g, with an average of 928.16ng/g. Along the increase of distance from roadside shelterbelts, the concentrations of Σ16 PAHs showed a trend of decrease first remove then increase, and finally decrease. The concentrations of Σ16 PAHs in farmland soil cores showed an increasing trend with the decreasing distance from the soil surface. Positive definite matrix factor analysis (PMF) models and isomer ratios were used to distinguish PAHs sources in soil surfaces and core samples. It was found that they were mainly derived from the combustion of coal and biomass and traffic emissions.
张希, 杨静, 刘敏, 陈星, 吴建. 上海交通沿线农田土壤中PAHs分布特征及源解析[J]. 中国环境科学, 2019, 39(2): 741-749.
ZHANG Xi, YANG Jing, LIU Min, CHEN Xing, WU Jian. Distribution characteristics and source analysis of PAHs in farmland soils along Shanghai traffic artery. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(2): 741-749.
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