Storm events lead to agricultural and urban runoff, to mobilization of contaminated particulate matter, and to input from combined sewer overflows into rivers. We conducted time‐resolved sampling during a storm event at the Ammer River, southwest Germany, which is representative of small river systems in densely populated areas with a temperate climate. Suspended particulate matter (SPM) and water from 2 sampling sites were separately analyzed by a multi‐analyte liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for 97 environmentally relevant organic micropollutants and with 2 in vitro bioassays. Oxidative stress response (AREc32) may become activated by various stressors covering a broad range of physicochemical properties and induction of aryl hydrocarbon receptor–chemical‐activated luciferase gene expression (AhR‐CALUX) by hydrophobic compounds such as dioxins and dioxin‐like molecules. Compound numbers, concentrations, their mass fluxes, and associated effect fluxes increased substantially during the storm event. Micropollutants detected in water and on SPM pointed toward inputs from combined sewer overflow (e.g., caffeine, paracetamol), urban runoff (e.g., mecoprop, terbutryn), and agricultural areas (e.g., azoxystrobin, bentazone). Particle‐facilitated transport of triphenylphosphate and tris(1‐chloro‐2‐propyl) phosphate accounted for up to 34 and 33% of the total mass flux even though SPM concentrations were <1 g L^–1. Effect fluxes attributed to SPM were similar or higher than in the water phase. The important role of SPM‐bound transport emphasizes the need to consider not only concentrations but also mass and effect fluxes for surface water quality assessment and wastewater/stormwater treatment options. Environ Toxicol Chem 2021;40:88–99. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

中文翻译：

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德国西南部阿默河中由风暴事件驱动的溶解和吸附的有机微污染物的发生和迁移及相关影响

风暴事件会导致农业和城市径流，污染颗粒物的流动，以及合流下水道溢流进入河流。我们在德国西南部阿默河的风暴事件期间进行了时间分辨采样，该河是温带气候下人口稠密地区小河流系统的代表。悬浮颗粒物 (SPM) 和来自 2 个采样点的水分别通过多分析物液相色谱 - 串联质谱 (LC-MS/MS) 方法对 97 种环境相关有机微污染物进行了分析，并进行了 2 项体外生物测定。氧化应激反应 (AREc32) 可能被各种应激物激活，这些应激物涵盖广泛的理化特性，并通过疏水化合物如二恶英和二恶英类分子诱导芳烃受体化学激活的荧光素酶基因表达 (AhR-CALUX)。在风暴事件期间，化合物数量、浓度、它们的质量通量和相关效应通量显着增加。在水中和 SPM 上检测到的微污染物指向来自混合下水道溢流（例如咖啡因、扑热息痛）、城市径流（例如甲丙氨酯、特布林）和农业地区（例如嘧菌酯、苯菌灵）的输入。即使 SPM 浓度 <1 g L，磷酸三苯酯和三（1-氯-2-丙基）磷酸酯的颗粒促进传输占总质量通量的 34% 和 33% 在水中和 SPM 上检测到的微污染物指向来自混合下水道溢流（例如咖啡因、扑热息痛）、城市径流（例如甲丙氨酯、特布林）和农业地区（例如嘧菌酯、苯菌灵）的输入。即使 SPM 浓度 <1 g L，磷酸三苯酯和三（1-氯-2-丙基）磷酸酯的颗粒促进传输占总质量通量的 34% 和 33% 在水中和 SPM 上检测到的微污染物指向来自混合下水道溢流（例如咖啡因、扑热息痛）、城市径流（例如甲丙氨酯、特布林）和农业地区（例如嘧菌酯、苯菌灵）的输入。即使 SPM 浓度 <1 g L，磷酸三苯酯和三（1-氯-2-丙基）磷酸酯的颗粒促进传输占总质量通量的 34% 和 33%^–1。归因于 SPM 的效应通量与水相相似或更高。SPM 结合运输的重要作用强调，不仅需要考虑浓度，还需要考虑地表水质评估和废水/雨水处理方案的质量和效应通量。环境毒理学化学2021；40：88-99。© 2020 作者。环境毒理学和化学由 Wiley Periodicals LLC 代表 SETAC 出版。