PMID- 22162488 OWN - NLM STAT- MEDLINE DCOM- 20151026 LR - 20191210 IS - 1615-9314 (Electronic) IS - 1615-9306 (Linking) VI - 35 IP - 2 DP - 2012 Jan TI - Enantioselective determination of triazole fungicide tebuconazole in vegetables, fruits, soil and water by chiral liquid chromatography/tandem mass spectrometry. PG - 206-15 LID - 10.1002/jssc.201100674 [doi] AB - A novel and sensitive method was developed for the determination of tebuconazole enantioselectively using reversed-phase LC-MS/MS. The separation and determination were performed using on an amylose-based chiral stationary phase, a Lux 3u Amylose-2 column (150 mmx2.0 mm), under isocratic conditions at 0.3 mL/min flow rate. A series of chiral stationary phases were investigated and the effect of mobile phase composition on the enantioseparation was discussed. Parameters including the matrix effect, linearity, precision, accuracy and stability were evaluated. Under optimal conditions, the overall mean recoveries for two enantiomers from the soil, tomato, cucumber, pear and apple samples were 79.3-101.1% with 2.8-11.5% intra-day relative standard deviations (RSDs) and 4.1-8.6% inter-day RSDs at 5, 25 and 50 mug/kg levels; the mean enantiomer recoveries from the water samples were 89.6-101.9% with 3.3-10.2% intra-day RSDs and 5.1-7.7% inter-day RSDs at 0.25, 0.5 and 2.5 mug/kg levels. The limits of detection (LODs) for all enantiomers in tomato, cucumber, pear, apple, soil and water were less than 0.6 mug/kg, whereas the limit of quantification (LOQ) did not exceed 2.0 mug/kg. The results indicate that this proposed method is convenient and reliable for the enantioselective determination of tebuconazole enantiomers in foods and environment samples. CI - Copyright (c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Li, Yuanbo AU - Li Y AD - Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing, P. R. China. yongquan_zheng@yahoo.com.cn FAU - Dong, Fengshou AU - Dong F FAU - Liu, Xingang AU - Liu X FAU - Xu, Jun AU - Xu J FAU - Li, Jing AU - Li J FAU - Kong, Zhiqiang AU - Kong Z FAU - Chen, Xiu AU - Chen X FAU - Zheng, Yongquan AU - Zheng Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20111212 PL - Germany TA - J Sep Sci JT - Journal of separation science JID - 101088554 RN - 0 (Fungicides, Industrial) RN - 0 (Soil Pollutants) RN - 0 (Triazoles) RN - 0 (Water Pollutants, Chemical) RN - 401ATW8TRW (tebuconazole) SB - IM MH - Chromatography, Liquid/*methods MH - Food Contamination/analysis MH - Fruit/chemistry MH - Fungicides, Industrial/*analysis/*chemistry MH - Humans MH - Limit of Detection MH - Soil Pollutants/analysis MH - Stereoisomerism MH - Tandem Mass Spectrometry/*methods MH - Triazoles/*analysis/*chemistry MH - Vegetables/chemistry MH - Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Chirality OT - Enantiomers OT - Enantioselectivity OT - LC-MS/MS OT - Tebuconazole EDAT- 2011/12/14 06:00 MHDA- 2015/10/27 06:00 CRDT- 2011/12/14 06:00 PHST- 2011/07/29 00:00 [received] PHST- 2011/10/02 00:00 [revised] PHST- 2011/10/24 00:00 [accepted] PHST- 2011/12/14 06:00 [entrez] PHST- 2011/12/14 06:00 [pubmed] PHST- 2015/10/27 06:00 [medline] AID - 10.1002/jssc.201100674 [doi] PST - ppublish SO - J Sep Sci. 2012 Jan;35(2):206-15. doi: 10.1002/jssc.201100674. Epub 2011 Dec 12.