辽河干流河岸带土壤有机磷酸酯污染特征研究

罗庆; 吴中平; 谷雷严; 单岳; 孙丽娜

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中国环境科学 ›› 2020, Vol. 40 ›› Issue (6) : 2598-2603.

土壤污染与控制

辽河干流河岸带土壤有机磷酸酯污染特征研究

罗庆, 吴中平, 谷雷严, 单岳, 孙丽娜

作者信息 +

Pollution characteristics of organophosphate esters in the riparian soil of Liao River

LUO Qing, WU Zhong-ping, GU Lei-yan, SHAN Yue, SUN Li-na

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摘要

本研究分析了辽河干流河岸带土壤中有机磷酸酯（OPEs）的含量水平，阐明了其空间分布特征，探讨了OPEs含量与土壤总有机碳（TOC）的关系，评估了OPEs造成的潜在生态风险.结果表明，13种OPEs在辽河干流河岸带土壤中的总浓度范围为19.6~89.4ng/g，平均浓度为44.2ng/g，处于国内外研究的较低水平；河岸带土壤中OPEs的含量总体上表现为上游较低、中下游较高，辽河上游主要由烷基OPEs和TPPO（Triphenylphosphine oxide）组成，辽河中下游主要是烷基OPEs；辽河干流河岸带土壤中OPEs的含量与土壤TOC含量没有相关性，这与OPEs的疏水特性有关；各OPEs单体的危害熵以及12种OPEs的总危害熵均低于1，表明辽河干流河岸带土壤中OPEs造成的生态风险较小.

Abstract

In this study, the concentrations, spatial distribution and ecological risk of organophosphate esters (OPEs) in the riparian soil of Liao River were investigated. The total concentrations of OPEs were ranged from 19.6 to 89.4ng/g, with the mean concentration of 44.2ng/g. Compared with other studies, the OPEs pollution in riparian soil of Liao River was at a low level. The OPEs pollution was low in the upstream and high in the middle and downstream on the whole. Alkyl OPEs and triphenylphosphine oxide (TPPO) were the most abundant OPEs in upstream of Liao River, while only alkyl OPEs were the predominant OPEs in downstream. There was no correlation between the concentrations of OPEs and the content of total organic carbon (TOC) in the riparian soil of Liao River, which is related to the hydrophobic characteristics of OPEs. The hazard quotient of each individual OPE and the total hazard quotient of OPEs were all lower than 1, indicated that the ecological risk caused by OPEs in the riparian soil of Liao River was little.

导出引用

罗庆, 吴中平, 谷雷严, 单岳, 孙丽娜. 辽河干流河岸带土壤有机磷酸酯污染特征研究[J]. 中国环境科学. 2020, 40(6): 2598-2603

LUO Qing, WU Zhong-ping, GU Lei-yan, SHAN Yue, SUN Li-na. Pollution characteristics of organophosphate esters in the riparian soil of Liao River[J]. China Environmental Science. 2020, 40(6): 2598-2603

中图分类号： X131.3

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