Polycyclic aromatic hydrocarbons in agricultural soils around the industrial city of Changzhi, China: characteristics, spatial distribution, hotspots, sources, and potential risks
Polycyclic aromatic hydrocarbons in agricultural soils around the industrial city of Changzhi, China: characteristics, spatial distribution, hotspots, sources, and potential risks
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工业城市长治周边农业土壤多环芳烃：特征、空间分布、热点、来源和潜在风险
DOI：
10.1007/s11368-016-1490-6
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发表时间：
2017-01-01
影响因子：
3.6
通讯作者：
Zhao, Long
中科院分区：
文献类型：
--
作者：
Liu, Geng;Guo, Wenjiong;Zhao, Long
目的进行了一项综合研究，以确定来自中国长相附近农业土壤的16个多环芳烃（PAH）的浓度，空间分布，热点，来源和人类健康风险。从工业城市的Changzhi，中国的农业地区收集并分析了16个PAH。讨论16个PAH的总浓度范围为9至10514 ng g（-1），平均为917 ng g（-1）。阳性基质分解分析表明，煤炭燃烧，焦油，柴油排放和石油燃烧是长是在长齐周围土壤中的四个主要来源，分别占PAH浓度的34％，23％，19岁和24％。空间分布和热点识别图表明，污染最多的区域与工业工厂的分布有关。苯并[a] pyrene等效（BAP（EQ））浓度从未检测到的（N. D.）到1683 ng g（-1），平均值为151 ng g（-1）。七个致癌PAH贡献了最大的BAP（EQ）（99.8％），这表明它们是16个PAH的主要致癌作用。土壤PAH。
Purpose A comprehensive study was conducted to determine the concentrations, spatial distribution, hotspots, sources, and human health risks of 16 polycyclic aromatic hydrocarbons (PAHs) from agricultural soils in the vicinity of Changzhi, China.Materials and methods A total of 203 samples were collected and analyzed for 16 PAHs from agricultural areas around the industrial city of Changzhi, China.Results and discussion The total concentrations of 16 PAHs ranged from 9 to 10514 ng g(-1), with an average of 917 ng g(-1). Positive matrix factorization analysis suggested that coal combustion, coke tar, diesel emissions, and petroleum combustion were the four main sources of PAHs in the soils around Changzhi, accounting for 34, 23, 19, and 24 % of PAH concentrations, respectively. The spatial distribution and hotspot identification maps showed that the most contaminated areas were related to the distribution of industrial plants. The benzo [a] pyrene equivalent (Bap(eq)) concentrations varied from not detected (N. D.) to 1683 ng g(-1), with a mean value of 151 ng g(-1). Seven carcinogenic PAHs contributed the largest Bap(eq) (99.8 %), which indicated that they were the main carcinogenic contributors among the sixteen PAHs.Conclusions Effective environmental risk control should be implemented in the region to avoid a significant carcinogenic risk to human health from soil PAHs.