热带淡水中农药的累积模式。
Accumulation pattern of pesticides in tropical fresh waters.
作者信息
Bhushan R, Thapar S, Mathur R P
机构信息
Department of Chemistry, University of Roorkee, India.
出版信息
Biomed Chromatogr. 1997 May-Jun;11(3):143-50. doi: 10.1002/(SICI)1099-0801(199705)11:3<143::AID-BMC650>3.0.CO;2-Q.
High-performance liquid chromatography has been used to study the persistence of commonly used organophosphorus and carbamate pesticides-carbaryl, carbendazim, carbofuran, dimethoate, malathion and methyl parathion in river water in the presence of bottom sediment in laboratory aquaria. The fate of pesticides in water and sediment in pre- and post-monsoon water from three sources has been compared. It has been established that rapid degradation occurs once the pesticide leaches into sediment from water. Degradation was at a much faster rate in post-monsoon water and sediment. It was found that pH and organic matter content affect rate of decay.
高效液相色谱法已被用于研究在实验室水族箱中有底泥存在的情况下，常用有机磷和氨基甲酸酯类农药（西维因、多菌灵、克百威、乐果、马拉硫磷和甲基对硫磷）在河水中的持久性。比较了来自三个水源的季风前和季风后水中农药在水和沉积物中的归宿。已证实，一旦农药从水中渗入沉积物，就会迅速降解。在季风后水和沉积物中，降解速度要快得多。研究发现，pH值和有机质含量会影响降解速率。
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