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Contamination of Urban Stormwater Pond Sediments: A Study of 259 Legacy and Contemporary Organic Substances
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-02-19 , DOI: 10.1021/acs.est.0c07782 Kelsey Flanagan 1 , Godecke-Tobias Blecken 1 , Heléne Österlund 1 , Kerstin Nordqvist 1 , Maria Viklander 1
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-02-19 , DOI: 10.1021/acs.est.0c07782 Kelsey Flanagan 1 , Godecke-Tobias Blecken 1 , Heléne Österlund 1 , Kerstin Nordqvist 1 , Maria Viklander 1
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Stormwater ponds improve water quality by facilitating the sedimentation of particles and particulate contaminants from urban runoff. Over time, this function entails the accumulation of contaminated sediments, which must be removed periodically to maintain a pond’s hydraulic and treatment capacity. In this study, sediments from 17 stormwater sedimentation facilities from four Swedish municipalities were analyzed for 259 organic substances likely to be found in the urban environment. A total of 92 substances were detected in at least one sample, while as many as 52 substances were detected in a single sample. A typical profile of urban contamination was identified, including polychlorinated biphenyls, polycyclic aromatic hydrocarbons, organotins, aliphatic hydrocarbons, phthalates, aldehydes, polybrominated diphenyl ethers, perfluorinated substances, and alkylphenols. However, levels of contamination varied greatly between ponds, influenced heavily by the dilution of urban pollutants and wear particles from other sources of particles such as eroded soil, sand, or natural organic matter. For 22 of 32 samples, the observed concentrations of at least one organic substance exceeded the regulatory threshold values derived from toxicity data for both sediment and soil.
中文翻译：
城市雨水池塘沉积物的污染：259种传统和现代有机物质的研究
雨水塘通过促进城市径流中的颗粒物和颗粒污染物的沉淀来改善水质。随着时间的流逝，此功能需要积累受污染的沉积物，必须定期清除这些沉积物以保持池塘的水力和处理能力。在这项研究中，分析了来自瑞典四个城市的17个雨水沉降设施的沉积物，以分析可能在城市环境中发现的259种有机物质。在至少一个样品中总共检测到92种物质，而在一个样品中检测出多达52种物质。确定了典型的城市污染特征，包括多氯联苯，多环芳烃，有机锡，脂肪烃，邻苯二甲酸酯，醛，多溴联苯醚，全氟物质和烷基酚。但是，池塘之间的污染水平差异很大，受城市污染物稀释的影响很大，并且磨损的颗粒还来自其他颗粒源，例如侵蚀土壤，沙子或天然有机物。对于32个样品中的22个，观察到的至少一种有机物质的浓度超过了从沉积物和土壤的毒性数据得出的调节阈值。
更新日期：2021-03-02
中文翻译：
城市雨水池塘沉积物的污染：259种传统和现代有机物质的研究
雨水塘通过促进城市径流中的颗粒物和颗粒污染物的沉淀来改善水质。随着时间的流逝，此功能需要积累受污染的沉积物，必须定期清除这些沉积物以保持池塘的水力和处理能力。在这项研究中，分析了来自瑞典四个城市的17个雨水沉降设施的沉积物，以分析可能在城市环境中发现的259种有机物质。在至少一个样品中总共检测到92种物质，而在一个样品中检测出多达52种物质。确定了典型的城市污染特征，包括多氯联苯，多环芳烃，有机锡，脂肪烃，邻苯二甲酸酯，醛，多溴联苯醚，全氟物质和烷基酚。但是，池塘之间的污染水平差异很大，受城市污染物稀释的影响很大，并且磨损的颗粒还来自其他颗粒源，例如侵蚀土壤，沙子或天然有机物。对于32个样品中的22个，观察到的至少一种有机物质的浓度超过了从沉积物和土壤的毒性数据得出的调节阈值。
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