Enantioselective degradation of tebuconazole in cabbage, cucumber, and soils.
The enantioselective degradation of tebuconazole has been investigated to elucidate the behaviors in agricultural soils, cabbage, and cucumber fruit. Rac-tebuconazole was fortified into three types of agricultural soils and sprayed foliage of cabbage and cucumber, respectively. The degradation kinetics, enantiomer fraction and enantiomeric selectivity were determined by reverse-phase high-performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) on a Lux amylose-2 chiral column. The process of the degradation of tebuconazole enantiomers followed first-order kinetic in the test soils and vegetables. It has been shown that the degradation of tebuconazole was enantioselective. The results indicated that the (+)-S-tebuconazole showed a faster degradation in cabbage, while the (-)-R-tebuconazole dissipated faster than (+)-S-form in cucumber fruit and the test soils.
State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Quality and Standard on Agricultural Products, Zhejiang Academy of Agricultural Science, Hangzhou, China.
Xinquan
X
Wang
Xuesong
X
Wang
Hu
H
Zhang
Changxing
C
Wu
Xiangyun
X
Wang
Hao
H
Xu
Xiaofu
X
Wang
Zhen
Z
Li
D001673:Biodegradation, Environmental; D001937:Brassica / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D018553:Cucumis sativus / Q000378:metabolism*; D005659:Fungicides, Industrial / Q000032:analysis / Q000378:metabolism / Q000493:pharmacokinetics; D007700:Kinetics; D015203:Reproducibility of Results; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism; D013237:Stereoisomerism; D053719:Tandem Mass Spectrometry; D014230:Triazoles / Q000032:analysis* / Q000378:metabolism* / Q000493:pharmacokinetics
D005659:Fungicides, Industrial; D012987:Soil; D012989:Soil Pollutants; D014230:Triazoles; C087114:tebuconazole