The main aim of this study was a survey of micropollutants in stormwater runoff of Berlin (Germany) and its dependence on land-use types. In a one-year monitoring program, event mean concentrations were measured for a set of 106 parameters, including 85 organic micropollutants (e.g., flame retardants, phthalates, pesticides/biocides, polycyclic aromatic hydrocarbons (PAH)), heavy metals and standard parameters. Monitoring points were selected in five catchments of different urban land-use types, and at one urban river. We detected 77 of the 106 parameters at least once in stormwater runoff of the investigated catchment types. On average, stormwater runoff contained a mix of 24 µg L⁻¹ organic micropollutants and 1.3 mg L⁻¹ heavy metals. For organic micropollutants, concentrations were highest in all catchments for the plasticizer diisodecyl phthalate. Concentrations of all but five parameters showed significant differences among the five land-use types. While major roads were the dominant source of traffic-related substances such as PAH, each of the other land-use types showed the highest concentrations for some substances (e.g., flame retardants in commercial area, pesticides in catchment dominated by one family homes). Comparison with environmental quality standards (EQS) for surface waters shows that 13 micropollutants in stormwater runoff and 8 micropollutants in the receiving river exceeded German quality standards for receiving surface waters during storm events, highlighting the relevance of stormwater inputs for urban surface waters.

中文翻译：

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不同土地利用方式下城市雨水径流中的微污染物

这项研究的主要目的是对柏林（德国）雨水径流中的微量污染物及其对土地利用类型的依赖性进行调查。在为期一年的监测计划中，对一组106个参数的事件平均浓度进行了测量，其中包括85种有机微污染物（例如，阻燃剂，邻苯二甲酸盐，杀虫剂/杀生物剂，多环芳烃（PAH）），重金属和标准参数。在五个不同城市土地利用类型的流域和一条城市河流中选择了监测点。在所调查的流域类型的雨水径流中，我们至少检测了106个参数中的77个。平均而言，雨水径流包含24 µg L ^-1有机微量污染物和1.3 mg L ^-1的混合物重金属。对于有机微污染物，增塑剂邻苯二甲酸二异癸酯的所有集水区中的浓度最高。除五个参数外，所有其他五个区域的浓度均显示出五种土地利用类型之间的显着差异。虽然主要道路是与交通有关的物质（如PAH）的主要来源，但其他每种土地利用类型均显示某些物质的最高浓度（例如，商业区的阻燃剂，集水区的杀虫剂以一个家庭住宅为主）。与地表水的环境质量标准（EQS）的比较表明，暴雨期间雨水径流中的13种微污染物和接收河流中的8种微污染物超过了德国在暴雨事件中接收地表水的质量标准，突显了雨水输入与城市地表水的相关性。