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Determination and study on dissipation and residue of bismerthiazol and its metabolite in Chinese cabbage and soil.
- Source :
-
Environmental monitoring and assessment [Environ Monit Assess] 2014 Feb; Vol. 186 (2), pp. 1195-202. Date of Electronic Publication: 2013 Sep 25. - Publication Year :
- 2014
-
Abstract
- A simple and accurate method for the determination of bismerthiazol and its metabolite 2-amino-5-mercapto-1,3,4-thiadiazole was developed in Chinese cabbage and soil by high-performance liquid chromatography-diode array detection in this study. The limits of detection were 0.06 mg/kg for bismerthiazol and 0.03 mg/kg for 2-amino-5-mercapto-1,3,4-thiadiazole, respectively. Recoveries of cabbage and soil were investigated at three spiking levels and were in the range of 84.0-96.0% for bismerthiazol and 71.0-74.6% for 2-amino-5-mercapto-1,3,4-thiadiazole, with relative standard deviations below 7.0%. For field experiments, the half-life of bismerthiazol was 2.4-2.5 days in Chinese cabbage and 2.5-4.8 days in soil at the two experimental locations in China. Dissipation residues of 2-amino-5-mercapto-1,3,4-thiadiazole were lower than 0.72 mg/kg. Terminal residues of bismerthiazol and its metabolite were less than 3.0 and 0.3 mg/kg in Chinese cabbage, respectively. No bismerthiazol or metabolite residues were detected in soil on days 5, 7, 10, and 14 after the last spraying at the two dosage levels.
Details
- Language :
- English
- ISSN :
- 1573-2959
- Volume :
- 186
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Environmental monitoring and assessment
- Publication Type :
- Academic Journal
- Accession number :
- 24065135
- Full Text :
- https://doi.org/10.1007/s10661-013-3449-z