Accumulation and leaching potential of some pharmaceuticals and potential endocrine disruptors in soils irrigated with wastewater in the Tula Valley, Mexico
Accumulation and leaching potential of some pharmaceuticals and potential endocrine disruptors in soils irrigated with wastewater in the Tula Valley, Mexico
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DOI：
10.1016/j.chemosphere.2010.09.006
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发表时间：
2010-12-01
期刊：
影响因子：
8.8
通讯作者：
Jimenez Cisneros, Blanca
中科院分区：
文献类型：
--
作者：
Gibson, Richard;Duran-Alvarez, Juan C.;Jimenez Cisneros, Blanca
将废水再用于农业土地灌溉是一种行之有效的做法，但会将许多污染物引入陆地环境，包括药品和个人护理产品。本研究报告的持久性和浸出潜力的一组酸性药物，卡马西平，和三种内分泌干扰物在土壤中的图拉山谷在墨西哥，世界上最大的灌溉区之一，使用未经处理的废水。经过相当于一个作物周期的强化废水灌溉的土壤柱，布洛芬，萘普生，双氯芬酸和4-壬基酚，三氯生，双酚A的总添加量的0%和7%之间的0%和25%之间的回收nom的土壤剖面卡马西平是更持久的，55%和107%之间被回收。沥滤液中的量表明，所有分析物都可能通过土壤移动，特别是在有机质和粘土含量低的情况下。对图拉山谷土壤样本的分析证实，酸性药物普遍缺乏积累（浓度由低于检测限至0.61微克/公斤（-1））及内分泌干扰物（浓度从低于检测限到109 μ g kg（-1）），尽管通过用未经处理的废水定期灌溉不断添加：在土壤剖面中几乎没有移动的证据。相反，卡马西平存在于土壤的A层中，其浓度相当于几年的灌溉添加量（2.6-7 5 μ g kg（-1）），并且也存在于较深的层中。卡马西平的持久性和流动性表明有可能污染地下水（C）2010 Elsevier Ltd版权所有
The reuse of wastewater for irrigation of agricultural land is a well established practice but introduces many contaminants into the terrestrial environment including pharmaceuticals and personal care products. This study reports the persistence and leaching potential of a group of acidic pharmaceuticals, carbamazepine, and three endocrine disruptors in soils from the Tula Valley in Mexico, one of the largest irrigation districts in the world that uses untreated wastewater. After irrigation of soil columns with fortified wastewater over the equivalent of one crop cycle, between 0% and 7% of the total added amounts of ibuprofen, naproxen, and diclofenac and between 0% and 25% of 4-nonylphenol, triclosan, and bisphenol-A were recovered nom the soil profiles Carbamazepine was more persistent, between 55% and 107% being recovered. Amounts in leachates suggested that movement through the soil was possible for all of the analytes, particularly in profiles of low organic matter and clay content. Analysis of soil samples from the Tula Valley confirmed the general lack of accumulation of the acidic pharmaceuticals (concentrations from below the limit of detection to 0 61 mu g kg(-1)) and endocrine disruptors (concentrations from below the limit of detection to 109 mu g kg(-1)) despite continual addition through regular irrigation with untreated wastewater: there was little evidence of movement through the soil profiles. In contrast, carbamazepine was present in horizon A of the soil at concentrations equivalent to several years of additions by irrigation (2.6-7 5 mu g kg(-1)) and was also present in the deeper horizons. The persistence and mobility of carbamazepine suggested a potential to contaminate groundwater (C) 2010 Elsevier Ltd All rights reserved