title: Enantioselective behaviour of the herbicide fluazifop-butyl in vegetables and soil.
abstract: The enantioselective dissipation of the enantiomers of fluazifop-butyl in tomato, cucumber, pakchoi, rape and soil under field condition was investigated to elucidate the enantioselective environmental behaviours and chiral stability of the optical pure product. Fluazifop, the major chiral metabolite of fluazifop-butyl, was also detected. Fluazifop-butyl dissipated rapidly in the vegetables and soil with the half-lives of the enantiomers ranging from 1.62 to 2.84days. Enantioselective degradations of fluazifop-butyl were found. In tomato and cucumber, S-fluazifop-butyl dissipated faster than R-enantiomer, while R-fluazifop-butyl showed a faster degradation in pakchoi, rape and soil. Fluazifop was found almost immediately after the application of fluazifop-butyl and had relatively longer persistent time. When the optical pure product fluazifop-P-butyl was applied, rapid degradation to R-fluazifop was found with half-lives from 1.24 to 2.28days, and no S-fluazifop-butyl or S-fluazifop was detected showing the herbicidally active fluazifop-P-butyl and R-fluazifop were configurationally stable.
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Qi
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Donghui
authors.initials: D
authors.lastname: Liu
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Yiran
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhan
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, No. 2 West Yuanmingyuan Road, Beijing 100193, PR China. Electronic address: wangpeng@cau.edu.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
mesh_terms: D001711:Biotransformation; D029741:Brassica rapa / Q000737:chemistry / Q000378:metabolism; D018553:Cucumis sativus / Q000737:chemistry / Q000378:metabolism; D004095:Dihydropyridines / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D059022:Food Safety; D006540:Herbicides / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000737:chemistry / Q000378:metabolism; D015394:Molecular Structure; D011725:Pyridines / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D013237:Stereoisomerism; D014675:Vegetables / Q000737:chemistry* / Q000378:metabolism
chemical_list: D004095:Dihydropyridines; D006540:Herbicides; D011725:Pyridines; D012989:Soil Pollutants; C050585:fluazifop-butyl; C050582:fluazifop
keywords: Enantioselective degradation; Fluazifop-butyl; Soil; Vegetable