Abstract
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 × 10−3 ng. The limit of quantification (LOQ) was 5.0 μg/kg for rice plant samples, 2.0 μg/kg for rice hull, 0.2 μg/kg for water, and 0.1 μg/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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Acknowledgments
We are grateful for the support from the Chinese National Science Foundation, People’s Republic of China (project 31171872). We are also grateful for Guanxi Special Invited Scientist (2013) program in Agric-Environment and Agro-products Safety.
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Zhang, Q., Zhao, Y., Fan, S. et al. Dissipation and residues of bispyribac-sodium in rice and environment. Environ Monit Assess 185, 9743–9749 (2013). https://doi.org/10.1007/s10661-013-3287-z
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DOI: https://doi.org/10.1007/s10661-013-3287-z