PMID- 31642281 OWN - NLM STAT- MEDLINE DCOM- 20191025 LR - 20200108 IS - 1872-2059 (Electronic) IS - 1000-8713 (Linking) VI - 37 IP - 10 DP - 2019 Oct 8 TI - [Determination of pesticide residues in wolfberry using QuEChERS-gas chromatography-tandem mass spectrometry]. PG - 1042-1047 LID - 10.3724/SP.J.1123.2019.04014 [doi] AB - A method based on QuEChERS-gas chromatography-tandem mass spectrometry (GC-MS/MS) was established for the determination of 20 pesticide residues in wolfberry. The samples were extracted with acetonitrile. The extract was purified with PSA (primary secondary amine), GCB (graphite carbon black) and C(18) to suppress the matrix in wolfberry. The analytical results showed that the calibration curves for the 20 pesticides obtained by GC-MS/MS were linear in the range of 5-500 mug/L, with the correlation coefficients higher than 0.99. The recoveries ranged from 70.02% to 110.78% with relative standard deviations (RSDs) ranging from 2.05% to 9.53%. This method has the advantages of being time-saving, convenient and sensitive. The proposed method can simultaneously detect organic phosphorus and organic chlorine pesticides residues with a good performance in terms of qualitative and quantitative detection. FAU - Wang, Fanghuan AU - Wang F AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Ren, Cuijuan AU - Ren C AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Ma, Hui AU - Ma H AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Li, Ping AU - Li P AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Hao, Junhu AU - Hao J AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Chen, Lin AU - Chen L AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. FAU - Sun, Min AU - Sun M AD - Yinchuan Customs Integrated Technology Center, Yinchuan 750002, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Pesticide Residues) SB - IM MH - Gas Chromatography-Mass Spectrometry MH - Lycium/*chemistry MH - Pesticide Residues/*analysis MH - Tandem Mass Spectrometry OTO - NOTNLM OT - QuEChERS OT - gas-chromatography-tandem mass spectrometry (GC-MS/MS) OT - pesticide residues OT - wolfberry EDAT- 2019/10/24 06:00 MHDA- 2019/10/28 06:00 CRDT- 2019/10/24 06:00 PHST- 2019/10/24 06:00 [entrez] PHST- 2019/10/24 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] AID - 10.3724/SP.J.1123.2019.04014 [doi] PST - ppublish SO - Se Pu. 2019 Oct 8;37(10):1042-1047. doi: 10.3724/SP.J.1123.2019.04014.