| 黄河水体沉积物对水胺硫磷和辛硫磷的吸附 |
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| 引用本文： | 李桂芝,刘永明,屈社香. 黄河水体沉积物对水胺硫磷和辛硫磷的吸附[J]. 环境科学与技术, 2003, 26(1): 12-13,42 |
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| 作者姓名： | 李桂芝 刘永明 屈社香 |
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| 作者单位： | 1. 烟台大学化学院,烟台,264005
2. 烟台市福山第三职业学校,烟台,265500 |
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| 摘 要： | 以黄河水及沉积物为研究对象 ,探讨了有机磷农药水胺硫磷和辛硫磷在黄河水体中的迁移规律 ,同时还研究了 pH值和离子强度等因素对迁移规律的影响。结果表明 ,沉积物对水胺硫磷和辛硫磷均有一定程度的吸附 ,且对辛硫磷的吸附量大于水胺硫磷 ,即辛硫磷在黄河水体中的迁移性小于水胺硫磷 ;其吸附等温线呈线性 ,是分配作用的结果。降低pH值和增加离子强度均使沉积物对水胺硫磷和辛硫磷吸附量减小。
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| 关 键 词： | 水胺硫磷 辛硫磷 吸附 黄河水 沉积物 |
| 文章编号： | 1003-6504(2003)01-0012-03 |
Adsorption of Isocarbophos and Phoxim on Sediments of the Yellow River |
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| LI Gui-zhi ,LIU Yong-ming ,QU She-xiang. Adsorption of Isocarbophos and Phoxim on Sediments of the Yellow River[J]. Environmental Science and Technology, 2003, 26(1): 12-13,42 |
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| Authors: | LI Gui-zhi LIU Yong-ming QU She-xiang |
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| Affiliation: | LI Gui-zhi 1,LIU Yong-ming 1,QU She-xiang 2 |
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| Abstract: | An investigation was conducted to trace the transfer and conversion of two organophosphorus insecticides: isocarbophos and phoxim in water body of the Yellow River. Experimental results showed the effects of pH and ionic strength of the river water on the adsorption of organophosphorus insecticides of the sediments. Sorption isotherms of isocarbophos and phoxim have been worked out respectively, both showing linear characteristics. Sorption coefficients for two organophosphorus insecticides measured were used to evaluate their sorption capacities. It has been also showed that lower value of pH and higher ionic strength would reduce the sorption of both insecticides. |
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| Keywords: | isocarbophos phoxim sorption the Yellow River sediments |
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