title: Dissipation and residues of bispyribac-sodium in rice and environment.
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.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Sufang
authors.initials: S
authors.lastname: Fan
authors.forename: Aijuan
authors.initials: A
authors.lastname: Bai
authors.forename: Xuesheng
authors.initials: X
authors.lastname: Li
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D001565:Benzoates / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry; D006207:Half-Life; D006540:Herbicides / Q000032:analysis* / Q000737:chemistry; D012275:Oryza / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry; D011743:Pyrimidines / Q000032:analysis* / Q000737:chemistry; D012987:Soil / Q000737:chemistry
chemical_list: D001565:Benzoates; D004785:Environmental Pollutants; D006540:Herbicides; D010573:Pesticide Residues; D011743:Pyrimidines; D012987:Soil; C549011:bispyribac