Light-induced transformation of tribenuron-methyl on glass, soil, and plant surface.
Photolysis of tribenuron-methyl (methyl 2-[[[[N-(4-methoxy-6-methyl-1,3,5triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoate), a sulfonylurea herbicide, was studied as thin film on glass surface, soil surface, and plant surface. A number of photoproducts such as 4-methoxy-6-methyl-2-aminomethyl-1,3,5-triazine; methyl-2-(aminosulfonyl) benzoate; N-(2-carbomethoxyphenyl)-N-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-N'-methylurea; N-(2-carbomethoxyphenyl sulfonyl)-N-methyl urea; o-benzoic sulfimide and 4-methoxy-6-methyl-2-amino-1,3,5-triazine were identified by comparison of their GC-MS with the authentic standards. The rate of degradation in all the cases followed first-order kinetics with a statistically significant correlation coefficient. Rate of photodegradation was greater on glass surface than on soil surface.
Bhattacharjee
A K
AK
Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi.
Dureja
P
P
D001190:Arylsulfonates / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D005898:Glass / Q000737:chemistry*; D007700:Kinetics; D010782:Photolysis; D010944:Plants / Q000737:chemistry*; D012987:Soil / Q000032:analysis*
D001190:Arylsulfonates; D012987:Soil; C050296:metsulfuron methyl