季节性去除城市径流中的除草剂

Urban Water Pub Date : 2002-03-01 DOI:10.1016/S1462-0758(01)00062-0

D.Michael Revitt , J.Bryan Ellis , Neville R Llewellyn

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引用次数: 44

摘要

在接收地表水中出现两种除草剂(diuron和simmazine)与其在城市集水区的季节性施用有关。基流和降雨条件下除草剂浓度的比较提供了对城市地表施用后污染物运输过程的深入了解。描述了两个具有不同水文特征的风暴事件。diuron和simazine的最大除草剂浓度分别达到238.4和2.23μg/l，前者相对于最近在城市集水区施用的diuron的施用量损失为45.1%。讨论了影响城市基材除草剂施用损失程度的因素。

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Seasonal removal of herbicides in urban runoff

The occurrence of two herbicides (diuron and simazine) in receiving surface waters is related to their seasonal applications within an urban catchment. Comparisons of herbicide concentrations within baseflow and during rainfall conditions provide an insight into pollutant transport processes following application to urban surfaces. Two storm events, with different hydrological characteristics, are described. The maximum recorded herbicide concentrations reached 238.4 and $2.23 μg / l$ for diuron and simazine, respectively, with the former corresponding to an application loss of 45.1% with respect to the diuron recently applied to the urban catchment. The factors influencing the extent of application losses to receiving waters of herbicides applied to urban substrates are discussed.

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Urban Water

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