Department of Environmental Engineering (DTU Environment), Technical University of Denmark, Miljavej 113, DK-2800 Kgs. Lyngby, Denmark.
Water Sci Technol. 2011;64(2):485-93. doi: 10.2166/wst.2011.687.
Stormwater runoff contains a broad range of micropollutants. In Europe a number of these substances are regulated through the Water Framework Directive, which establishes Environmental Quality Standards (EQSs) for surface waters. Knowledge about discharge of these substances through stormwater runoff and combined sewer overflows (CSOs) is essential to ensure compliance with the EQSs. Results from a screening campaign including more than 50 substances at four stormwater discharge locations and one CSO in Copenhagen are reported here. Heavy metal concentrations were detected at levels similar to earlier findings, e.g., with copper found at concentrations up to 13 times greater than the Danish standard for surface waters. The concentration of polyaromatic hydrocarbons (PAHs) exceeded the EQSs by factors up to 500 times for stormwater and 2,000 times for the CSO. Glyphosate was found in all samples whilst diuron, isoproturon, terbutylazine and MCPA were found only in some of the samples. Diethylhexylphthalate (DEHP) was also found at all five locations in concentrations exceeding the EQS. The results give a valuable background for designing further monitoring programmes focusing on the chemical status of surface waters in urban areas.
雨水径流中含有广泛的微量污染物。在欧洲，通过《水框架指令》对其中一些物质进行了监管，该指令为地表水制定了环境质量标准（EQS）。了解这些物质通过雨水径流和合流污水溢流（CSO）的排放情况对于确保 EQS 的遵守至关重要。本研究报告了在哥本哈根的四个雨水排放点和一个 CSO 进行的筛选研究的结果，该研究包括 50 多种物质。重金属浓度与早期的发现相似，例如，铜的浓度高达丹麦地表水标准的 13 倍。雨水径流中多环芳烃（PAHs）的浓度超标 500 倍，CSO 中的浓度超标 2000 倍。所有样本中均检测到草甘膦，而 Diuron、异丙隆、特丁津和 MCPA 仅在部分样本中检出。在所有五个地点都发现了邻苯二甲酸二辛酯（DEHP），浓度超过 EQS。这些结果为设计进一步的监测计划提供了有价值的背景信息，这些计划侧重于城市地区地表水的化学状况。
