Dynamics and mechanism of ultraviolet photolysis of atrazine on soil surface
2001
Gong, A. | Ye, C. | Wang, X. | Lei, Z. | Liu, J.
The photolysis of atrazine in the soil surface under UV light and the factors affecting this has been studied. A rate constant of 0.09-0.17 min-1, photolytic depth of 0.1-0.3 mm and half-life of 4-8 min were determined. The results show that soil granularity, pH, humidity, organic content, humic acid and surface-active agents could affect the photolysis of atrazine in soil. GC-MS showed three photolytic products: 1-sec-butyl-4,4-diethy1-1-tetrazene, N2, N4-diethyl-6-methy1-1,3,5-triazine-2,4-diamine and 6-chloro-N2-propy1-1,3,5-triazine-2,4-diamine. The mechanism of the photolytic process is discussed.
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