Light induced transformation of isoprothiolane on glass,soil, and plant surface |
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Authors: | P.P. Choudhury S. Roy K.K. Somyajulu P. Dureja |
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Affiliation: | 1. Deparment of Biochemistry , Uttar Banga Krishi Viswavidyalaya , Coochbehar, West Bengal, India parthatinku@yahoo.com;3. Division of Agricultural Chemicals , Indian Agricultural Research Institute , New Delhi, India |
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Abstract: | Photolysis of isoprothiolane (di-isopropyl 1,3-dithiolan-2-ylidenemalonate) was studied as a thin film on glass surface, soil surface, and plant surface. Three photoproducts, namely 1,3-dithiolan-2-ylidenepropane, 1,3-dithiolan-2-ylidenemalonic acid, and 1,3-dithiolan-2-ylidenemethane have been identified on the basis of GC-MS method. The major route of photodegradation of this compound is through the de-esterification process, followed by de-carboxylation and rearrangement. The rate of photodegradation in all cases followed first-order kinetics with a statistically significant correlation coefficient. |
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Keywords: | isoprothiolane photolysis soil surface glass surface UV light sunlight |
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