Ecological and health risk-based characterization of agricultural soils contaminated with polycyclic aromatic hydrocarbons in the vicinity of a chemical plant in China
Ecological and health risk-based characterization of agricultural soils contaminated with polycyclic aromatic hydrocarbons in the vicinity of a chemical plant in China
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中国一家化工厂附近受多环芳烃污染的农业土壤的生态和健康风险特征。
DOI：
10.1016/j.chemosphere.2016.08.056
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发表时间：
2016-11-01
期刊：
影响因子：
8.8
通讯作者：
Zhao, Long
中科院分区：
文献类型：
--
作者：
Liu, Geng;Niu, Junjie;Zhao, Long
化学植物的多环芳烃（PAHS）可能会对周围的农业土壤造成严重污染。对中国化学厂附近的农业土壤进行了全面研究，以表征土壤PAH浓度及其成分和来源。对农业土壤中的PAH污染进行了人类健康和筛查水平的生态风险评估。结果表明，16个优先级PAH的总浓度范围为250.49至9387.26 ng g（-1），平均为2780.42 ng g（-1）。高分子量PAHS（四到六个环）是主要成分，占所有PAH的60％以上。主成分分析（PCA）和阳性基质分解模型（PMF）表明，柴油排放，煤炭燃烧，可乐烤箱以及燃料燃烧和汽油排放是农业土壤中PAH的主要来源。基于效应范围（ERL），效果范围 - 米数（ERM）以及生态筛查水平（ESL）的生态风险评估结果表明，对Sigma PAH（16）的暴露是> erl，> erl，> erm，> erm，> erm，> erm，> erm，> erm， > = = ERL和ESL在78.1％的土壤采样站，并可能诱导哺乳动物的生物学作用。 BAP（EQ）浓度对人类带来了潜在的致癌风险。需要进一步的风险管理和控制这些农业土壤中的土壤PAH，以确保杀生物性和人类健康的安全。 （c）2016 Elsevier Ltd.保留所有权利。
Polycyclic aromatic hydrocarbons (PAHs) from chemical plants can cause serious pollution of surrounding agricultural soils. A comprehensive study of agricultural soils was conducted in the vicinity of a chemical plant in China to characterize the soil PAH concentration, as well as their composition and sources. Human health and a screening-level ecological risk assessment were conducted for PAH contamination in agricultural soils. The results showed that the total concentrations of 16 priority PAHs ranged from 250.49 to 9387.26 ng g(-1), with an average of 2780.42 ng g(-1). High molecular weight PAHs (four to six rings) were the dominant component, accounting for more than 60% of all PAHs. Principal component analysis (PCA) and positive matrix factorization model (PMF) suggested that diesel emissions, coal combustion, coke ovens, and fuel combustion and gasoline emissions were the main sources of PAHs in agricultural soils. The ecological risk assessment results based on the effects range-low (ERL), the effects range-median (ERM), and the ecological screening levels (ESL) indicated that the exposure to Sigma PAH(16) was >ERL, >ERM, and >= ERL and ESL at 78.1% of the soil sampling stations, and could induce biological effects in mammals. The Bap(eq) concentrations posed a potential carcinogenic risk to humans. Further risk management and control of soil PAHs in these agricultural soils is required to ensure the safety of the biocoenosis and human health. (C) 2016 Elsevier Ltd. All rights reserved.