Photodegradation of Pesticides on Plant and Soil Surfaces
土壤水分
农药残留
二嗪酮
化学
作者
Toshiyuki Katagi
出处
期刊:Reviews of Environmental Contamination and Toxicology日期:2004-01-01卷期号:182: 1-189被引量:183
标识
DOI:10.1007/978-1-4419-9098-3_1
摘要
Sunlight photodegradation is one of the most destructive pathways for pesticides after their release into the environment. Plant surfaces, especially leaf surfaces, are the first reaction environment for a pesticide molecule after application, and spray drift would indirectly present a similar situation. Photolysis on soil surfaces becomes important when a pesticide is directly applied to soil or not significantly intercepted by plants, providing that the leaf cover does not shade the ground from sunlight. Because the foliar interception of pesticides depends on plant species and usually increases with their growth stage (Linders et al. 2000), the importance of soil photolysis is considered to be lessened when plants become mature. Spray drift after pesticide application or washoff from plants by rain is the indirect route by which a pesticide reaches the soil.