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Chlorfenapyr rice samples in the analysis methods and degradation of residual
Abstract: The samples in this study to establish an effective Chlorfenapyr Gas Chromatography, and 15% for rice Chlorfenapyr residue on the study, through the sample extraction, purification, enrichment, studies in rice fields chlorfenapyr Water, and brown rice in the rice plant residue analysis methods investigated chlorfenapyr degradation in paddy water dynamic rule, obtained in the rice water chlorfenapyr average recovery was 99.4%, coefficient of variation was 9.92% ~ 12.79%; in Rice straw in the average recovery was 99.2%, coefficient of variation was 7.23% ~ 16.25%; in brown rice, the average recovery was 97.9%, coefficient of variation was 7.97% to 13.5%. Analysis of the minimum detectable amount was 2.0 × 10-9 g; Chlorfenapyr minimum detectable water in the rice fields the concentration of 0.0001mg/kg. Degradation dynamics of water in rice fields results show that: the water in the rice fields Chlorfenapyr digestion pattern consistent with a chemical reaction kinetics C=C0e-kt, in Changsha, Hangzhou, two half-life of paddy water were 6.24d, 7.09d. [À´Ô´£ºhttp://www.doc163.com]
Key words: Chlorfenapyr; paddy fields; Gas chromatography; Pesticide Residues
[À´Ô´£ºhttp://Doc163.com]


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