Selective chemical extractants to predict bioavailability of soil-aged organic chemicals
Selective chemical extractants to predict bioavailability of soil-aged organic chemicals
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DOI：
10.1021/es960354j
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发表时间：
1997-01-01
影响因子：
11.4
通讯作者：
Alexander, M
中科院分区：
文献类型：
--
作者：
Kelsey, JW;Kottler, BD;Alexander, M
进行了一项研究，以确定设计一种化学测定方法来预测土壤中被隔离的有机化合物的生物利用度的可行性。不同溶剂对土壤中新添加的阿特拉津和菲的回收率差异较大，但随着试验化合物在土壤中的持续存在，每种溶剂的提取率都有所下降。某些萃取剂的回收率接近蚯蚓吸收或细菌降解的百分比。一种萃取剂的回收率预测了两种生物的生物利用度。这些数据表明，用化学方法预测土壤中持久性有机化合物的生物有效性是可行的。
A study was conducted to determine the feasibility of devising a chemical assay to predict the bioavailability of organic compounds that become sequestered in soil. The recovery of atrazine and phenanthrene freshly added to soil varied appreciably among individual solvents, but the quantity extracted by each solvent declined as the test compounds persisted in soil. The percentage recovered by some extractants approximated either the percentage uptake by earthworms or bacterial degradation. Recovery by one extractant predicted bioavailability to both organisms. The data suggest that it is feasible to predict bioavailability of persistent organic compounds in soil by chemical procedures.