期刊论文

中文

农业环境科学学报

1672-2043

2004

23

6

1124-1127

10.3321/j.issn:1672-2043.2004.06.021

云南大学科研项目（2002Q007SM）； 云南省自然科学基金重点项目（2002C0001Z）； 云南大学重大科研项目（2002SM0102）； 湖南省青年骨干教师基金项目；

本校为其他机构

采用自制的简易光解装置,研究了环糊精衍生物甲基化-β-环糊精( MCD)和羟丙基-β-环糊精( HPCD)对甲基对硫磷光降解的影响.结果表明, MCD或 HPCD与甲基对硫磷混合经光照后,甲基对硫磷的光解速度加速了 4.87～ 6.85倍,环糊精衍生物表现了较强的光敏降解效应,其敏化效率随光照时间延长而提高,环糊精衍生物的敏化效率与 MCD或 HPCD的浓度及光照时间呈正相关.

Photodegradation is one pathway of pesticides degradation in natural environments, and methyl- β - cyclodextrin and hydropropyl - β - cyclodextrin may play a protective role in pesticide decomposition under natural exposure. The photodegradation of parathion- methyl involved with 3 g· L- 1 and 6 g· L- 1 methyl- β - cyclodextrin and hydropropyl- β - cyclodextrin were investigated. The photolytic rates of parathion- methyl increased 4.87～ 6.85 times under the treatment of methyl- β - cyclodextrin or hydropropyl- β - cyclodextrin. The hal...