Des substances médicamenteuses comme indicateurs d’influence de vidange sur une eau de nappe Los productos farmacéuticos como indicadores de la influencia de aguas residuales en el agua subterránea 医药品用于指示源于生活污水的地下水污染 Fármacos como indicadores de água subterrânea influenciada por água residual doméstica | Pharmaceuticals as indictors of sewage-influenced groundwater
2012
Müller, Beate | Scheytt, Traugott | Asbrand, Martin | de Casas, Andrea Mross
A set of human pharmaceuticals enables identification of groundwater that is influenced by sewage and provides information on the time of recharge. As the consumption rates of the investigated pharmaceuticals have changed over time, so too has the composition of the sewage. At the study area, south of Berlin (Germany), irrigation was performed as a method of wastewater clean-up at sewage irrigation farms until the early 1990s. Today, treated wastewater is discharged into the surface-water-stream Nuthegraben. Groundwater and surface-water samples were analyzed for the pharmaceutical substances clofibric acid, bezafibrate, diclofenac, carbamazepine and primidone, the main ions and organic carbon. The pharmaceutical substances were detected at concentrations up to microgram-per-liter level in groundwater and surface-water samples from the Nuthegraben Lowland area and from the former irrigation farms. Concentrations detected in groundwater are generally much lower than in surface water and there is significant variation in the distribution of pharmaceutical concentrations in groundwater. Groundwater influenced by the irrigation of sewage water shows higher primidone and clofibric-acid concentrations. Groundwater influenced by recent discharge of treated sewage water into the surface water shows high carbamazepine concentrations while concentrations of primidone and clofibric acid are low.
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