摘要
为了全面评价新型杀螨剂F1050的环境行为,以254及365 nm紫外灯为光源研究了其在溶剂相中的光化学降解。结果表明,F1050在有机溶剂中的光解速率为甲醇>正己烷>乙腈,在254 nm紫外光照射下F1050的光解速率大于在365 nm黑炽荧光灯下的光解速率,丙酮表现出对F1050水溶液显著的光猝灭作用,而添加H2O2作为氧化剂的水溶液则能加速F1050的光解。
In order to comprehensively evaluate environmental security of miticide F1050, photolysis of F1050 in several sol- vents as well as water was studied by using different light sources（ X =254 nm and X =365 nm. It has been found that the photolysis rates of F1050 were in an order with ranking methanol 〉 n - hexane 〉 acetonitrile. When the light wavelength increased from 254 nm to 365 nm, the photolysis rate of F1050 decreased. When fortified at the levels of 5% and 10% with acetone, the haft lives increased by 1.47 and 2.26 times, respectively. While fortified at the level of 0.5% and 1% with H2 02, the photolytic haft lives of F1050 decreased by 4.79 and 5.68 times, respectively. It may be suggested that photochemical studies on pesticide and other pollutants be carried out in conditions as similar as possible to those observed in environmental systems.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2007年第B03期207-210,共4页
Journal of Agro-Environment Science
