| Abstract: | Tribenuron-methyl a sulfonylurea herbicide, readily photodegraded in aqueous solution under sunlight and UV light. The photoproducts identified were N-methyl-4-methoxy-6-methyl-1,3,5-triazine-2-amine, methyl 2-(aminosulfonyl) benzoate, o-benzoic sulfimide, N-(4-methoxy-6-methyl1,3,5-triazin-2-yl)-N-methyl urea and N-(2-carbomethoxyphenyl)-N-(4-methoxy-6-methyl-1,3,5triazin-2-yl)-N′-methyl urea. The rate of photodegradation of tribenuron-methyl in different types of water followed first-order kinetics with significant correlation coefficient, increased with increase in pH and was also dependent upon the dissolved impurities. © 1999 Society of Chemical Industry |
