Insecticide residues on stream sediments in Ontario, Canada.
Insecticide residues on stream sediments in Ontario, Canada.
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加拿大安大略省溪流沉积物中的杀虫剂残留。
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
J. Miles
中科院分区：
文献类型：
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作者：
J. Miles
对加拿大安大略省某烟区和菜地的河流悬浮物和底泥中的杀虫剂残留进行了研究。TDE与DDT在水中的比例小于1，在底泥中大于1。在安大略省诺福克县，底质中TDE/DDT的比值从溪源污染点到大溪口呈线性增加。泥沙样本含有的杀虫剂浓度是底质的三到六倍。杀虫剂在悬浮物上的吸附按DDT>TDE>狄氏剂>二氮磷的顺序递减，这与这些化合物的水溶性一致。
Insecticide residues on suspended and bottom sediments of streams of Ontario, Canada, have been studied in a tobacco-growing and a vegetable muck area. The proportion of TDE to DDT was less than 1 in water and greater than 1 in bottom sediments. The ratio of TDE to DDT in bottom material increased linearly from the contamination point at stream source to the mouth of Big Creek in Norfolk County, Ontario. Bed load samples contained three to six times greater concentrations of insecticides than bottom material. Adsorption of insecticides on suspended sediment decreased in order DDT greater than TDE greater than dieldrin greater than diazinon, which is consistent with the water solubility of these compounds.