Biodegradability of pharmaceutical compounds in agricultural soils irrigated with treated wastewater
Biodegradability of pharmaceutical compounds in agricultural soils irrigated with treated wastewater
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DOI：
10.1016/j.envpol.2013.10.038
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发表时间：
2014-02-01
影响因子：
8.9
通讯作者：
Chefetz, Benny
中科院分区：
文献类型：
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作者：
Grossberger, Amnon;Hadar, Yitzhak;Chefetz, Benny
药物化合物（PCs）通过用处理过的废水（TWW）灌溉进入农业土壤。我们的数据表明，卡马西平、拉莫三嗪、咖啡因、美托洛尔、磺胺甲恶唑和西地那非通过TWW引入土壤后，在土壤中具有持久性。然而，其他pc，即双氯芬酸、布洛芬、贝扎菲特、吉布齐尔和萘普生，通过TWW引入土壤时未检测到。这可能是由于我们的微观研究证实了它们的快速降解，当土壤中添加50 ng/g的土壤时，它们的半衰期（t(1/2)）在0.2-9.5天之间，当土壤中添加5000 ng/g的土壤时，半衰期在3 - 68天之间。微观研究中观察到的pc的降解速度和程度与以前用TWW或淡水灌溉的土壤相似。这表明TWW灌水对土壤预暴露于pc并不能促进pc的生物降解。这表明pc可能通过共代谢在土壤中降解。(C) 2013 Elsevier Ltd.版权所有。
Pharmaceutical compounds (PCs) are introduced into agricultural soils via irrigation with treated wastewater (TWW). Our data show that carbamazepine, lamotrigine, caffeine, metoprolol, sulfamethoxazole and sildenafil are persistent in soils when introduced via TWW. However, other PCs, namely diclofenac, ibuprofen, bezafibrate, gemfibrozil and naproxen were not detected in soils when introduced via TWW. This is likely due to rapid degradation as confirmed in our microcosm studies where they exhibited half-lives (t(1/2)) between 0.2-9.5 days when soils were spiked at 50 ng/g soil and between 3 and 68 days when soils were spiked at 5000 ng/g soil. The degradation rate and extent of PCs observed in microcosm studies were similar in soils that had been previously irrigated with TWW or fresh water. This suggests that pre-exposure of the soils to PCs via irrigation with TWW does not enhance their biodegradation. This suggests that PCs are probably degraded in soils via co-metabolism. (C) 2013 Elsevier Ltd. All rights reserved.