IDAEA-CSIC, Jordi Girona, 18, E-08034 Barcelona, Spain.
Sci Total Environ. 2011 Dec 15;412-413:14-9. doi: 10.1016/j.scitotenv.2011.09.057. Epub 2011 Oct 24.
Emerging contaminants have received much attention in recent years due to their presence in surface waters, but little attention has been paid to their occurrence in agricultural irrigation waters. This study investigated the occurrence of these compounds in an agricultural irrigation network in northeastern Spain and, for the first time, using two plant uptake models, estimated the concentration of selected micropollutants in crops. The concentration of micropollutants in agricultural irrigation waters ranged from 10 to 5130 ng L(-1) and exhibited some attenuation over the course of the irrigation network. Bromoform, chloroform, diclofenac, caffeine, ibuprofen, naproxen, methyl dihydrojasmonate, galaxolide, butylated hydroxytoluene, and butylated hydroxyanisole were the most abundant contaminants (>200 ng L(-1), on average). The estimated concentration of micropollutants in crops ranged from <1 to 7677 ng kg(-1), with the neutral compounds being the most abundant. Moreover, the predicted data obtained by fate models generally agreed with experimental data. Finally, human exposure to micropollutants through fruit and vegetable consumption was estimated to be 9.8 μg per person and week (Σ 27 contaminants detected). Further studies are needed to determine the health implications that the presence of these compounds in fruit and vegetables may have for consumers.
近年来，由于新兴污染物在地表水中的存在，它们受到了广泛关注，但很少有人关注它们在农业灌溉水中的存在。本研究调查了这些化合物在西班牙东北部农业灌溉网络中的存在情况，并首次使用两种植物吸收模型，估算了选定的微污染物在作物中的浓度。农业灌溉水中的微污染物浓度范围为 10 至 5130ng/L，并在灌溉网络的过程中表现出一定的衰减。溴仿、三氯甲烷、双氯芬酸、咖啡因、布洛芬、萘普生、甲基二氢茉莉酮酸酯、麝香酮、叔丁基对羟基甲苯和叔丁基对羟基苯甲醚是最丰富的污染物（平均浓度>200ng/L）。作物中微污染物的估算浓度范围为<1 至 7677ng/kg，其中中性化合物最为丰富。此外，通过命运模型预测的数据通常与实验数据一致。最后，通过食用水果和蔬菜估计人体接触微污染物的量为每人每周 9.8μg（检测到的 27 种污染物的总和）。需要进一步研究确定这些化合物在水果和蔬菜中的存在对消费者可能产生的健康影响。
