Dissipation and residues of bispyribac-sodium in rice and environment

作者：Zhang, Qian; Zhao, Yang; Fan, Sufang; Bai, Aijuan; Li, Xuesheng; Pan, Canping^*

来源：Environmental Monitoring and Assessment, 2013, 185(12): 9743-9749.

DOI：10.1007/s10661-013-3287-z

• Bispyribac-sodium
• Dissipation
• Residue
• LC-MS/MS

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.

• 出版日期2013-12
• 单位中国农业大学; 广西大学