Photodegradation Rate and Products of Acetochlor in Aqueous Solution
Photodegradation of acetochlor 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphe nyl) acetamide was carried out in water and water-H2O2 solution under high pressure mercery lamp(HPML) or sunlight illuminating. The result shown that the photodegradation of acetochlor followed the first-order kinetics. The photolysis rate constants were 1.04×10-1 min-1 by HPML illuminating and 1.93×10-2 h-1 under sunlight illuminating, respectively. H2O2 increased the photodegradation rate of acetochlor in water solution. At least 12 photodegradation products of acetochlor were found by GC-MS analyses. Among them, three components, namely 8-methyl-1-methoxymethyl-4-methyl-2-oxo-1,2,3,4-tet rahydroquinone(Ⅰ), 2 -methyl -6 -N -methoxyethyl -N -oxacycloethylene -aniline(Ⅱ), N-chloroacetyl -7 -ethyl -2, 3 -dihydroindole(Ⅲ), were identified by TLC and GC-MS.
Photodegradation acetochlor water H2O2 photodegradation products
Rimao Hua Li Xu Yongde Yue Feng Tang Xuede Li Haiqun Cao Xiangwei Wu
College of Resource and Environmental Science, Anhui Agriculture University Key Lab of Agri-Food Saf International Centre for Bamboo and Rattan 100102, Beijing, China
国际会议
上海
英文
4455-4462
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）