PMID- 32084304 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20200420 LR - 20200420 IS - 1520-636X (Electronic) IS - 0899-0042 (Linking) VI - 32 IP - 5 DP - 2020 May TI - A green and effective method for the determination of metalaxyl enantiomers in tobacco and soil by supercritical fluid chromatography-tandem mass spectrometry. PG - 505-514 LID - 10.1002/chir.23184 [doi] AB - We reported a new methodology for the stereoselective determination of metalaxyl enantiomers in tobacco and soil. The QuEChERS (quick, easy, cheap, effective, rugged, and safe) method was used for the extraction and clean-up of the tobacco and soil samples. Separation of the metalaxyl enantiomers was performed on an ACQUITY UPC2 Trefoil CEL1 chiral column coupled with supercritical fluid chromatography with tandem mass spectrometry (SFC-MS/MS), and the run time was only 5 minutes. Under the optimized conditions, the recoveries for the enantiomers were between 78.2% and 93.3% with intraday relative standard deviations (RSDs) ranging from 1.1% to 5.4%. The limit of detection (LOD) for the enantiomers in tobacco and soil varied from 0.005 to 0.007 mg/kg, and the limit of quantitation (LOQ) ranged from 0.017 to 0.020 mg/kg. In this method, only a small amount of methanol was consumed to obtain a rapid stereoselective separation. This proposed method showed good accuracy and precision and might be suitable for fast enantioselective determination of metalaxyl in food and environmental samples. The developed method was further validated by application to the analysis of authentic samples. CI - (c) 2020 Wiley Periodicals, Inc. FAU - Yang, Fei AU - Yang F AUID- ORCID: 0000-0002-9179-375X AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - Wang, Ying AU - Wang Y AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - Liu, Shanshan AU - Liu S AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - He, Chen AU - He C AD - Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China. FAU - Tao, Xiaoqiu AU - Tao X AD - Sichuan Tobacco Quality Supervision and Testing Station, Chengdu, China. FAU - Deng, Huimin AU - Deng H AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - Tang, Gangling AU - Tang G AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - Bian, Zhaoyang AU - Bian Z AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. FAU - Fan, Ziyan AU - Fan Z AD - China National Tobacco Quality Supervision and Test Center, Zhengzhou, China. LA - eng PT - Journal Article DEP - 20200221 PL - United States TA - Chirality JT - Chirality JID - 8914261 SB - IM OTO - NOTNLM OT - enantioseparation OT - fungicide OT - soil OT - supercritical fluid chromatography-tandem mass spectrometry (SFC-MS/MS) OT - tobacco EDAT- 2020/02/23 06:00 MHDA- 2020/02/23 06:01 CRDT- 2020/02/22 06:00 PHST- 2019/12/13 00:00 [received] PHST- 2020/01/19 00:00 [revised] PHST- 2020/01/20 00:00 [accepted] PHST- 2020/02/23 06:00 [pubmed] PHST- 2020/02/23 06:01 [medline] PHST- 2020/02/22 06:00 [entrez] AID - 10.1002/chir.23184 [doi] PST - ppublish SO - Chirality. 2020 May;32(5):505-514. doi: 10.1002/chir.23184. Epub 2020 Feb 21.