Occurrence of antibiotics and hormones in a major agricultural watershed
Occurrence of antibiotics and hormones in a major agricultural watershed
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DOI：
10.1016/j.desal.2007.01.238
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发表时间：
2008-06-25
期刊：
影响因子：
9.9
通讯作者：
Codling, Eaton
中科院分区：
文献类型：
--
作者：
Arikan, Osman A.;Rice, Clifford;Codling, Eaton
抗生素和激素被认为是新兴的环境微污染物，因为它们对生态系统和人类健康有潜在的不利影响。关于地表水中这些新出现的污染物来源的现有资料非常有限。本研究的目的是确定抗生素和激素在农业流域的出现情况，并确定这些污染物的季节性变化。在4月、6月、9月和12月4个季节，从美国马里兰州Choptank主要接收河流的15个小流域站和7个站点采集水样。测定了水样中抗生素（磺胺噻唑、磺胺美嗪、磺胺乙唑、磺胺乙嗪、磺胺吡啶、磺胺甲恶唑、磺胺二甲氧嘧啶、四环素、土霉素、氯四环素和多西环素）和激素（雌三醇、雌二醇、17 α -乙炔雌二醇、雌酮、睾酮和孕酮）以及饲料添加剂砷。此外，在一组沉积物样本中分析了相同的抗生素。该研究表明，农业可能是水生环境中抗生素残留的一个来源。
Antibiotics and hormones are considered emerging environmental microcontaminants because of their potential adverse effects on ecosystems and human health. Available information on the source of these emerging contaminants in surface waters is very limited. The objectives of this study were to determine the occurrence of antibiotics and hormones in an agricultural watershed and to determine the seasonal variability of these contaminants. Water samples were collected from 15 subwatershed stations and 7 stations on the major receiving river, Choptank, Maryland, USA, over four different seasons (April, June, September and December). Antibiotics (sulfathiazole, sulfamerazine, sulfamethizole, sulfamethazine, sulfachloropyridazine, sulfamethoxazole, sulfadimethoxine, tetracycline, oxytetracycline, chlortetracycline and doxycycline) and hormones (estriol, estradiol, 17 alpha-ethynytestradiol, estrone, testosterone and progesterone) as well as arsenic which is used as feed additive were determined in these water samples. In addition, the same antibiotics were analyzed in one set of sediment samples. This study indicated that agriculture may act as a source of antibiotic residues in the aquatic environment.