文献类型：期刊文献

中文题名：复合改性粘土对除草剂2,4-D的控制释放作用研究

英文题名：Study on the controlled release of herbicide 2,4-D with complexly modified clay

作者：吕金红[1];李建法[1];王杰[1];薛琴[1];吴丽琴[1]

机构：[1]绍兴文理学院化学系

年份：2010

卷号：12

期号：1

起止页码：73

中文期刊名：农药学学报

外文期刊名：Chinese Journal of Pesticide Science

收录：CSTPCD、、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：浙江省自然科学基金资助项目(Y306107)

语种：中文

中文关键词：除草剂;2,4-D;粘土;吸附;控制释放

外文关键词：herbicide ; 2,4-D ; clay ; adsorption; controlled release

中文摘要：采用无机／有机复合改性粘土作制剂载体，探讨了其对阴离子型除草剂2，4－D的控制释放作用，目的在于延长2，4-D的持效期，同时减轻其污染。利用无机和有机改性的结合优势，复合改性粘土具有更强的吸附性能，能够显著延缓2，4－D在水中和土壤中的释放。分析其水中释放动力学数据得出，2，4－D释放50％所需时间（t50）长达73．8h，远大于有机改性粘土作载体时的1h。土壤层释放实验表明，当2，4－D载药量在20～80mg／g之间时，复合改性粘土均能保持良好的控制释放效果。

外文摘要：Clay complexly modified with inorganic and organic cations was used as the carrier of anionic herbicide 2,4-D, and its performance on controlling the herbicide＇s release was investigated. The aim of this research was to prolong the activity of 2,4-D, and reduce its pollution. The modified clay had much higher adsorbability, and could obviously slow the release of 2,4-D in both water and soil. The results of release kinetics in water indicated the time taken for 50% 2,4-D to be released was as long as 73.8 h, and much longer than that of organically modified clay （ 1 h） being used as the carrier. According to the release experiments in soil layer, the complexly modified clay has very good performance on controlling 2,4-D release when the loading amount ranged between 20 -80 mg/g.