Stephens Kristian D, Farenhorst Annemieke, Les Fuller G
Department of Soil Science, University of Manitoba, Winnipeg, Canada.
J Environ Sci Health B. 2002 Nov;37(6):561-71. doi: 10.1081/PFC-120015439.
Microbial inhibitors such as mercuric chloride are frequently used to sterilize soil or soil-water slurries in experimental studies on the fate of xenobiotics in the environment. This study examined the influence of mercuric chloride additions to soil-water slurries on the sorptive behaviour of a phenoxy herbicide (2,4-D) in soil. The results demonstrated that mercuric chloride strongly decreased the capacity of the soil to retain herbicides, and that the interference of mercuric chloride with herbicide sorption increased with increasing soil organic carbon contents. Because of the competitive sorption between mercuric chloride and the phenoxy herbicide, we conclude that mercuric chloride may not be a good soil sterilization procedure for use in xenobiotic fate studies.
在关于环境中异生素归宿的实验研究中，常用诸如氯化汞之类的微生物抑制剂对土壤或土壤 - 水悬浮液进行灭菌处理。本研究考察了向土壤 - 水悬浮液中添加氯化汞对土壤中一种苯氧基除草剂（2,4 - D）吸附行为的影响。结果表明，氯化汞显著降低了土壤对除草剂的保留能力，并且氯化汞对除草剂吸附的干扰随着土壤有机碳含量的增加而增大。由于氯化汞与苯氧基除草剂之间存在竞争性吸附，我们得出结论，在异生素归宿研究中，氯化汞可能并非一种良好的土壤灭菌方法。
