文献类型：期刊文献

中文题名：有机膨润土对印楝素的缓释和稳定作用

英文题名：Slowing the Release and Stabilization of Azadirachtin-A by Organic Bentonites

作者：李建法[1] 谭卫红[2] 吕金红[1] 李益民[1]

第一作者：李建法

机构：[1]绍兴文理学院化学系,浙江绍兴312000;[2]中国林科院林产化学工业研究所,南京210054

年份：2009

卷号：48

期号：1

起止页码：27-30

中文期刊名：农药

外文期刊名：Agrochemicals

收录：CSTPCD;;北大核心:【北大核心2008】；

基金：国家自然科学基金资助项目(30500387);浙江省自然科学基金资助项目(Y307106)

语种：中文

中文关键词：印楝素;膨润土;缓释;稳定性

外文关键词：azadirachtin; bentonite; slow release; stability

分类号：TQ450.4

摘要：采用有机膨润土做载体以延缓印楝素的释放,提高其在水中和光照下的稳定性。印楝素A(Aza-A)的水解和光降解过程可以用一级反应动力学描述,其半衰期分别为67.5、5.35h。有机膨润土能够降低印楝素A在水中的释放速率,且膨润土改性时有机阳离子用量越多,印楝素A释放越慢。有机膨润土做载体可以提高印楝素A在水中的稳定性,并可将其光降解半衰期延长到6.94h。
Organic bentonites were used as carriers so as to slow the release of azadirachtin, and improve its stability in water and under irradiation. The hydrolysis and photo-degradation of azadirachtin-A （Aza-A） could be described with first-order reaction kinetics, and the half-lives were 67.5 h and 5.35 h respectively. Organic bentonites could reduce the release rate of Aza-A in water. The more organic cations used in modification of bentonite, the slower the release of Aza-A. As the carrier, the organic bentonites could improve the stability of Aza-A in water, and prolong the half-life of photo-degradation to 6.94 h.