Institute of Groundwater and Earth Sciences, Jinan University, 510632, Guangzhou, China; Institute of Urban and Industrial Water Management, Technische Universität Dresden, 01062, Dresden, Germany.
SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, 510006, Guangzhou, China.
Environ Pollut. 2019 Jul;250:511-519. doi: 10.1016/j.envpol.2019.04.062. Epub 2019 Apr 14.
Monitoring spatial and temporal chemical status of water bodies is crucial to assist environmental policy, identify the chemical fingerprints, and further reduce the source orientated pollutants. Elbe River is one of the major rivers affected by anthropogenic activities in vicinity countries. This study assessed the spatiotemporal changes in response to source shift of Cd, Cu, Ni, Pb, and Zn in the suspended particulate matter (SPM) at upstream, midstream, and downstream of the Elbe River reach in Saxony state, Germany. The average contents of trace metals in SPM was found in the order of Zn (676 mg/kg) » Pb (79 mg/kg) > Cu (74 mg/kg) > Ni (48 mg/kg) » Cd (3.2 mg/kg). According to the Mann-Kendall trend test, Cd, Cu, Pb, and Zn showed significant declines over 1998-2016. The results of source apportionment indicate industrial, urban, natural, and historical mining sources influencing the metal contents in the Elbe River of Saxony. The contributions of industrial and urban pollution decreased by 58.2% from 1998 to 2007 to 2008-2016. The contribution of the natural source was steady over the last two decades.
监测水体的时空化学状况对于辅助环境政策制定、识别化学指纹以及进一步减少污染源具有重要意义。易北河是受附近国家人为活动影响的主要河流之一。本研究评估了易北河流域德国萨克森州上游、中游和下游悬浮颗粒物 (SPM) 中 Cd、Cu、Ni、Pb 和 Zn 响应源转移的时空变化。SPM 中痕量金属的平均含量按 Zn(676mg/kg) » Pb(79mg/kg) > Cu(74mg/kg) > Ni(48mg/kg) » Cd(3.2mg/kg)的顺序排列。根据 Mann-Kendall 趋势检验，Cd、Cu、Pb 和 Zn 在 1998 年至 2016 年间呈显著下降趋势。来源分配的结果表明，工业、城市、自然和历史采矿源影响了萨克森州易北河的金属含量。工业和城市污染的贡献从 1998 年至 2007 年的 58.2%下降到 2008 年至 2016 年。自然源的贡献在过去二十年中保持稳定。
