Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China.
Environ Pollut. 2020 Dec;267:115436. doi: 10.1016/j.envpol.2020.115436. Epub 2020 Aug 18.
Human activities such as agriculture, aquaculture, and industry can lead to the pollution of coastal waters by trace organic contaminants (TrOCs), and the TrOCs can pose a threat to marine ecosystems. Therefore, it is essential to investigate the occurrence, distribution, and ecological risk of the TrOCs in coastal waters. Previous studies adopting conventional analytical methods have focused on a limited number of targets. Herein, a comprehensive and systematic determination was undertaken to target 484 TrOCs in the waters around the Liaodong Peninsula, China. Eighty-six TrOCs were detected at concentrations of up to 350 ng L, and 25 TrOCs were detected at a frequency of >50%. Pesticides were the predominant pollutants, occurring at high concentrations with large detection frequencies. Ecological risks were assessed for single pollutants and mixtures based on the risk quotient and concentration addition modeling, respectively. The detected pesticides posed relatively high risk to aquatic organisms, while pharmaceuticals, consumer products, and other pollutants posed little or no risk. TrOC mixtures posed extremely high risk to aquatic organisms, which represented a significant threat to the marine environment and local communities. The results described here provide useful information that can inform China's "Action Plan for Prevention and Control of Water Pollution".
人类活动，如农业、水产养殖和工业，可能导致沿海水域受到痕量有机污染物（TrOCs）的污染，而这些污染物可能对海洋生态系统构成威胁。因此，调查沿海水域中痕量有机污染物的发生、分布和生态风险至关重要。以前采用常规分析方法的研究主要集中在有限数量的目标上。在这里，对中国辽东半岛周围海域的 484 种痕量有机污染物进行了全面而系统的测定。在浓度高达 350ng/L 的范围内检测到 86 种痕量有机污染物，超过 50%的频率检测到 25 种痕量有机污染物。农药是主要的污染物，以高浓度和大检测频率出现。根据风险商数和浓度加和模型，分别对单污染物和混合物进行了生态风险评估。所检测到的农药对水生生物构成了相对较高的风险，而药品、消费品和其他污染物则几乎没有风险或没有风险。痕量有机污染物混合物对水生生物构成极高风险，对海洋环境和当地社区构成重大威胁。这里描述的结果提供了有用的信息，可以为中国的“水污染防治行动计划”提供参考。
