Department of Marine Science and Convergence Engineering, College of Science and Convergence Technology, Hanyang University, Ansan 15588, Republic of Korea.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Mar Pollut Bull. 2021 Oct;171:112787. doi: 10.1016/j.marpolbul.2021.112787. Epub 2021 Jul 31.
Few studies have been conducted on aquatic contamination by alternative plasticizers. Phthalates and novel plasticizers were measured in sediments from a highly industrialized lake to assess occurrence, sources, time trends, and ecological risks. Legacy and alternative plasticizers were detected in all sediments. Di(2-ethylhexyl) phthalate (DEHP) was a predominant plasticizer, indicating its popular industrial consumption for the last two decades. Predominant novel plasticizers were changed over time. The highest sedimentary DEHP level was recorded on the global scale. Legacy and alternative plasticizers in creek sediments significantly increased from 2008 to 2016, while those from inshore and offshore regions of the lake significantly decreased in association with a dilution effect caused by the operation of a tidal power plant. Concentration ratios of alternative plasticizers to DEHP increased for the last decade, implying a shift in consumption of plasticizers. Sedimentary DEHP concentrations in creeks exceeded almost all threshold values associated with ecological risks.
鲜有研究关注替代增塑剂对水的污染。本研究选取高度工业化的湖泊沉积物，分析其中邻苯二甲酸酯和新型增塑剂的含量，以评估其在沉积物中的存在情况、来源、时间变化趋势和生态风险。研究结果显示，所有沉积物中均检测到了传统和新型增塑剂。邻苯二甲酸二（2-乙基己基）酯（DEHP）是最主要的增塑剂，这表明其在过去二十年中广泛应用于工业生产。不同时期，主要的新型增塑剂有所变化。该研究记录了全球范围内最高的沉积物 DEHP 水平。2008 年至 2016 年，小溪沉积物中的传统和新型增塑剂含量显著增加，而湖泊近岸和远岸地区的含量则因潮汐能发电站的运行造成稀释效应而显著降低。过去十年中，替代增塑剂与 DEHP 的浓度比值不断上升，表明增塑剂的消费结构发生了变化。小溪沉积物中的 DEHP 浓度已超过几乎所有与生态风险相关的阈值。
