摘要
应用平衡法研究了毒死蜱和氰戊菊酯在取样于宁波地区的3种典型土壤(淡涂泥土、黄斑青紫泥土和山地黄泥砂土)的吸附行为。结果表明,淡涂泥土、黄斑青紫泥土和山地黄泥砂土对毒死蜱的吸附常数分别为121.4088、477.7604、3537.0809;对氰戊菊酯的吸附常数分别为15.7476、100.8772、102.3091,表明无论是山地黄泥砂土、黄斑青紫泥土,还是淡涂泥土,对毒死蜱的吸附性均远高于氰戊菊酯。通过吸附常数Kd与土壤的有机质含量、pH值以及阳离子代换量等理化性质进行单因子回归分析,表明毒死蜱和氰戊菊酯的土壤吸附率(Y)除与土壤有机质含量呈显著正相关外,与土壤阳离子交换量的相关性也呈显著相关性。
Adsorption of chlorpyrifos and fenvalerate in 3 different soils, which were representative soil in Ningbo, was studied by batch equilibration technique. The result showed that the Kd values of chlorpyrifos in tested soils were 121.4088,477.7604 and 3537.0809 respectively, and the Kd values of chlorpyrifos were 15.7476,100.8772,102.3091 respectively. This suggested that adsorption of chlorpyrifos in tested soils were significantly intense than that of fenvalerate. Except for organic matter in soils, the Kd values were positively correlated with the CEC of soil.
出处
《中国农学通报》
CSCD
2007年第9期486-489,共4页
Chinese Agricultural Science Bulletin
基金
宁波市青年基金"白蚁预防性药剂的野外持效性预测及污染潜能研究"(2004A20010)
关键词
毒死蜱
氰戊菊酯
土壤吸附
Chlorpyrifos, Fenvalerate, Soil adsorption