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Position: Home > Articles > Effect of Humic Acid on the Leaching and Movement of Ethametsulfuron-methyl in Red Soil Journal of Agro-Environment Science 2007 (05) 1645-1649

腐植酸对除草剂胺苯磺隆在红壤中淋溶迁移的影响

作者：

张瑾;司友斌

单位：

安徽建筑工业学院环境工程系;安徽农业大学植保系

关键词：

胺苯磺隆;腐植酸;吸附;淋溶

摘要：

采用室内吸附试验方法及室内模拟土柱方法,研究了腐植酸对除草剂胺苯磺隆的吸附及其对胺苯磺隆在红壤中淋溶迁移的影响。结果表明,腐植酸对胺苯磺隆的吸附能力很强,其吸附常数Kf值为2675.3;在添加了腐植酸的红壤中,胺苯磺隆的分布集中在表层0～10cm处,而中下层含量少,且随着土壤中腐植酸含量的增大,胺苯磺隆在土壤表层的浓度升高,胺苯磺隆的淋出率也较对照减少了,表明在红壤中添加腐植酸显著减弱了胺苯磺隆的淋溶迁移能力;胺苯磺隆-腐植酸的红外吸收谱图显示胺苯磺隆与腐植酸发生了共吸附现象,形成了腐植酸-胺苯磺隆的复合体。

译名：

Effect of Humic Acid on the Leaching and Movement of Ethametsulfuron-methyl in Red Soil

作者：

ZHANG Jin1,SI You-bin2 (1. Department of Environmental Engineering,Anhui Institute of Architecture and Industry,Hefei 230022,China; 2. Department of Plant Protection,Anhui Agricultural University,Hefei 230036,China)

关键词：

ethametsulfuron-methyl; humic acid; adsorption; leaching

摘要：

Leaching ability of pesticide is necessary when registered. Humic acid (HA) is an important organic ingredient of soil and a most important factor affecting the leaching ability of pesticide in soil. Adsorption of herbicide ethametsulfuron-methyl on HA and the effect of adding HA to red soil on the leaching of ethametsulfuron-methyl in the red soil were studied. The results showed that the adsorption of herbicide ethametsulfuron-methyl on HA was strong,with the adsorption constant (Kf) 2 675.3. Ethametsulfuron-methyl was mainly distributed in the upper layer soil with added HA,little in the mid-layer,and very little in the bottom,and the amount of ethamertsulfuron-methyl in leachate greatly reduced compared with that in the control. Adding HA to red soil remarkably restrained the ability of leaching and mobilizing of the herbicide. FT-IR (fourier transform infrared) spectra of ethametsulfuron-methyl and HA showed that co-adsorption happened between thametsulfuron-methyl and HA,i.e. they formed the compound of ethametsulfuron-methyl -HA.

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腐植酸对除草剂胺苯磺隆在红壤中淋溶迁移的影响

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