【摘要】 以低功率紫外灯和荧光灯为光源对水溶液中的绿麦隆进行光降解，探讨了光解的影响因素．研究表明，绿麦隆在紫外光照下较易降解，其光解符合准一级动力学方程，反应速率常数为２３×１０－２ｍｉｎ－１；在水环境中经长期光照会逐渐矿化为Ｃｌ－、ＣＯ２、ＮＯ－３等无机离子；运用ＧＣ／ＭＳ技术鉴定了绿麦隆的几种光解中间产物，异氰酸（３氯—４甲基）—苯酚酯是主要中间体，并推测了绿麦隆的光解反应历程．更多还原

【Abstract】 The photolysis of chlorotoluron N′—(3 chloro—4 methylphenyl)—N,N—dimethylureal was investigated under irradiation of various wavelength in aqueous solution.The factors that influence the photolysis were also investigated.The degradation process follows a pseudo first order kinetic under ultraviolet light,and the rate constant was determined to be 2 3×10 -2 min -1 .The herbicide was mineralized to CO 2,Cl - and NO - 3 after long term irradiation.Several photolysis intermediates were identified using GC/MS technique,and 3 chloro 4 methylphenyl isocyanide was recognized as a major reaction intermediate.A mechanism of the process was supposed.更多还原