Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish Council for Scientific Research, Jordi Girona 18-26, 08034 Barcelona, Spain.
Chemosphere. 2011 Nov;85(8):1331-9. doi: 10.1016/j.chemosphere.2011.07.051. Epub 2011 Aug 30.
The occurrence of 43 pharmaceuticals belonging to predominant therapeutic classes and their distribution in surface water, suspended solids and sediments has been investigated in the Ebro river basin in the Northeast of Spain. WWTP effluents were found to be a main source of contamination and the spatial distribution was affected by the river flow at the sampling point and corresponding dilution factor, resulting in higher concentrations and higher loads in small tributary rivers than in the Ebro river. The study showed that some compounds are preferentially found bound to suspended solids and not detected in river water. Generally, compounds with basic characteristics (pKa > 7) showed higher tendency to bind to suspended solids. The sediment samples generally presented lower concentrations than suspended solids.
在西班牙东北部的埃布罗河流域，调查了属于主要治疗类别的 43 种药物及其在地表水、悬浮物和沉积物中的分布。污水处理厂的废水被发现是主要的污染源，空间分布受采样点的河流流量和相应的稀释因子的影响，导致在小支流中的浓度和负荷高于埃布罗河。研究表明，一些化合物更容易与悬浮物结合，而不在河水中被检测到。一般来说，具有碱性特征（pKa > 7）的化合物更倾向于与悬浮物结合。沉积物样品的浓度一般低于悬浮物。
