Degradation and residues of indoxacarb enantiomers in rice plants, rice hulls and brown rice using enriched S-indoxacarb formulation and enantiopure formulation

Biomedical Chromatography : BMC
Lihong ShiDeyu Hu

Abstract

A chiral liquid chromatography-tandem high resolution mass spectroscopic method was developed for the analysis of indoxacarb enantiomers in rice plants, rice hulls and brown rice. Chiral separation of two enantiomers was carried out on a Superchiral S-OD column maintained at 20°C and eluted with 0.3 mL/min methanol. Samples were extracted by acetonitrile solution with ultrasound and cleansed by dispersive solid-phase extraction of 50 mg of primary secondary amine and 50 mg of C18 . This method was successfully used to study the degradation and residues of two enantiomers with enriched S-indoxacarb (2.33S/1R) and pure S-indoxacarb in rice plants. The half-lives of R-indoxacarb and S-indoxacarb were 4.20-4.33 and 3.45-3.57 days in rice plants during the degradation of enriched S-indoxacarb in Guizhou and Hunan, respectively, whereas the half-lives of pure S-indoxacarb were 2.68 and 3.69 days in Guizhou and Hunan, respectively. The results indicated that preferential S-indoxacarb degradation occurred and that enantiomeric transformation was absent in the total experiment periods of pure S-indoxacarb in rice plants. The final residue concentrations of indoxacarb enantiomers in brown rice were significantly less than those in rice p...Continue Reading

References

Feb 15, 2001·Biochemical Society Transactions·I Rizov, A Doulis
Jul 25, 2003·Journal of Chromatography. a·Jana Hajslová, Jitka Zrostlíková
Jan 6, 2005·Proceedings of the National Academy of Sciences of the United States of America·Weiping LiuWilliam A Jury
Jun 20, 2006·Mass Spectrometry Reviews·W M A NiessenR Andreoli
Apr 10, 2010·Environmental Pollution·Jing YeWeiping Liu
Oct 29, 2013·Journal of Agricultural and Food Chemistry·Dali SunBining Jiao
Feb 3, 2018·Analytical and Bioanalytical Chemistry·Christina I NannouTriantafyllos A Albanis

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Citations

Nov 19, 2020·Journal of Analytical Methods in Chemistry·Ying-Hong LiHu Zhang
Nov 26, 2020·Environmental Toxicology and Chemistry·Yanhong LiLihong Qiu

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