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Enantioselective Degradation of Indoxacarb From Different Commercial Formulations Applied to Tea
Author(s) -
Zhang Yuping,
Hu Deyu,
Meng Xingang,
Shi Qingcai,
Li Pei,
Jin Linhong,
Zhang Kankan,
Song Baoan
Publication year - 2015
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22422
Subject(s) - indoxacarb , chemistry , enantiomer , stereoselectivity , chirality (physics) , enantioselective synthesis , chromatography , tandem mass spectrometry , stereochemistry , organic chemistry , mass spectrometry , pesticide , agronomy , nambu–jona lasinio model , chiral symmetry breaking , physics , quantum mechanics , biology , quark , catalysis
The stereoselective degradation of indoxacarb enriched with (+)‐S‐indoxacarb (S/R:70/30) was investigated in three typical green teas. A convenient and precise chiral method was developed and validated for measuring indoxacarb enantiomers in green tea. The developed method was based on high‐performance liquid chromatography coupled with tandem mass spectrometry using a Chiralpak IC column. The stereoselective degradation of indoxacarb enantiomers showed that the (+)‐S‐enantiomer dissipated faster than the (−)‐R‐enantiomer in all three typical tea farms. However, no enantiomerization was observed after applying pure (+)‐S‐indoxacarb. Residues on tea plant of the active ingredient (+)‐S‐indoxacarb from suspension concentrate (SC) was more persistent than that from emulsifiable concentrate (EC). Chirality 27:262–267, 2015 . © 2015 Wiley Periodicals, Inc.