UFZ - Helmholtz Centre for Environmental Research, Department of Hydrogeology, Leipzig, Germany.
Environ Pollut. 2009 Nov;157(11):3069-77. doi: 10.1016/j.envpol.2009.05.037. Epub 2009 Jun 13.
Based on a monitoring program over the course of a year, we characterize the temporal and spatial distribution of selected micropollutants in an urban watershed within the city of Leipzig, Germany. Micropollutants revealed a ubiquitous presence in untreated and treated wastewater, surface water and groundwater. The loads of 4-nonylphenol in the effluents of the municipal wastewater treatment plant followed a seasonal trend, whereas the loads of all other micropollutants were highly variable and not correlated to seasons. In the surface water, load seasonality of caffeine, galaxolide and tonalide resulted from a rapid removal with increased water temperature. The loads of 4-nonylphenol and of caffeine in the colder months increased when rainfall occurred. In the groundwater, complex spatial and temporal patterns were apparent and were related to varying input, retardation and removal processes. As a consequence, an assessment of micropollutants in urban waters should consider different micropollutants' temporal and spatial variability.
基于一年的监测计划，我们描述了德国莱比锡市一个城市流域中选定的微污染物的时间和空间分布。微污染物在未经处理和处理的废水、地表水和地下水中普遍存在。城市污水处理厂废水中的 4-壬基酚负荷呈现季节性趋势，而所有其他微污染物的负荷则高度可变，与季节无关。在地表水中，咖啡因、甲氧基麝香和酮麝香的负荷季节性是由于水温升高而迅速去除的结果。在寒冷的月份，当降雨发生时，4-壬基酚和咖啡因的负荷会增加。在地下水中，存在复杂的时空模式，与不同的输入、延迟和去除过程有关。因此，对城市水中微污染物的评估应考虑不同微污染物的时间和空间变异性。
