Effect of pH on the degradation of imidacloprid and fipronil in paddy water

This study investigated the degradation of imidacloprid and fipronil in paddy water at pH 7 and pH 10. Both imidacloprid and fipronil degraded faster at pH 10, and fipronil degraded faster than imidacloprid at pH 10. The half-life estimates of imidacloprid were 182 and 44.7 days at pH 7 and pH 10, r...

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Bibliographic Details
Published inJournal of Pesticide Science Vol. 38; no. 4; pp. 223 - 227
Main Authors Thuyet, Dang Quoc, Watanabe, Hirozumi, Ok, Junghun
Format Journal Article
LanguageEnglish
Published Tokyo Pesticide Science Society of Japan 2013
Japan Science and Technology Agency
Subjects
degradation
fipronil
imidacloprid
paddy water
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Summary:This study investigated the degradation of imidacloprid and fipronil in paddy water at pH 7 and pH 10. Both imidacloprid and fipronil degraded faster at pH 10, and fipronil degraded faster than imidacloprid at pH 10. The half-life estimates of imidacloprid were 182 and 44.7 days at pH 7 and pH 10, respectively, and those values of fipronil were 87.9 and 13.2 days, respectively. Fipronil sulfone was found in the degradation process of fipronil.
ISSN:1348-589X
1349-0923
DOI:10.1584/jpestics.D12-080