期刊
ENVIRONMENTAL MONITORING AND ASSESSMENT
卷 185, 期 12, 页码 9743-9749出版社
SPRINGER
DOI: 10.1007/s10661-013-3287-z
关键词
Bispyribac-sodium; Dissipation; Residue; LC-MS/MS
资金
- Chinese National Science Foundation, People's Republic of China [31171872]
The dissipation and residues of bispyribac-sodium in rice cropping system were studied. Bispyribac-sodium residues were extracted by a simple analytical method based on QuEChERs and detected by LC-MS/MS. The limit of detection for bispyribac-sodium of this method was 0.375 x 10(-3) ng. The limit of quantification (LOQ) was 5.0 mu g/kg for rice plant samples, 2.0 mu g/kg for rice hull, 0.2 mu g/kg for water, and 0.1 mu g/kg for soil and husked rice samples. The average recoveries of bispyribac-sodium ranged from 74.7 to 108 %, with relative standard deviations less than 13 %. The half-lives of bispyribac-sodium in rice plant, water, and soil were in the range of 1.4-5.6 days. More than 90 % of bispyribac-sodium residue dissipated within 5 days. The final residues of bispyribac-sodium in rice were all below LOQ at harvest time.
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