PMID- 27097457 OWN - NLM STAT- MEDLINE DCOM- 20160504 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 33 IP - 12 DP - 2015 Dec TI - [Simultaneous determination of 121 veterinary drugs in pork by QuEChERS and ultra performance liquid chromatography-tandem mass spectrometry]. PG - 1242-50 AB - A method has been developed for the simultaneous determination of the 10 kinds of 121 veterinary drugs (including chloramphenicols, beta-agonists, sulfonamides, 4-quinolones, nitroimidazoles, macrolides, avermections, polyether antibiotics, tetracycline antibiotics, cephalosporins, etc.) in pork using QuEChERS method coupled with ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The drugs were extracted with Na2EDTA-McIlvaine buffer solution (pH = 4) and acetonitrile. Anhydrous sodium sulfate was used for the salting-out process. The solutions divided into two groups were cleaned-up by different mixed sorbents. The drugs were analyzed by UPLC-MS/MS in multiple reaction monitoring (MRM) mode via electrospray ionization. Among the 121 drugs, 5 drugs were quantified by internal standard method, and the other 116 drugs were quantified by external standard method. The calibration curves of the 121 drugs were linear in the range of 0.02-40 mug/L with the correlation coefficients more than 0.99. The limits of quantification (LOQs, S/N = 10) were 0.05-10 mug/kg. The average recoveries of 8 drugs at LOQ level in pork ranged from 41.7% to 59.6% with the relative standard deviations (RSDs) of 1.7% - 13.5%. The average recoveries of 10 drugs at LOQ level in pork ranged from 122.6% to 163.2% with the RSDs of 0.6% -14.8%. The average recoveries of 103 drugs at LOQ level in pork ranged from 60.3% to 118.3% with the RSDs of 0.4% - 16.7%. The proposed method is rapid, simple, sensitive, reliable and cost-effective. FAU - Guo, Haixia AU - Guo H FAU - Xiao, Guiying AU - Xiao G FAU - Zhang, Xiqing AU - Zhang X FAU - Wang, Minglin AU - Wang M FAU - Li, Li AU - Li L FAU - Leng, Lei AU - Leng L FAU - Gao, Hongliang AU - Gao H LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Anti-Bacterial Agents) RN - 0 (Macrolides) RN - 0 (Sulfonamides) RN - 0 (Veterinary Drugs) RN - 66974FR9Q1 (Chloramphenicol) SB - IM MH - Animals MH - Anti-Bacterial Agents MH - Chloramphenicol MH - Chromatography, High Pressure Liquid MH - Chromatography, Liquid MH - Drug Residues/*analysis MH - Macrolides MH - Red Meat/*analysis MH - Sulfonamides MH - Swine MH - Tandem Mass Spectrometry MH - Veterinary Drugs/*analysis EDAT- 2016/04/22 06:00 MHDA- 2016/05/05 06:00 CRDT- 2016/04/22 06:00 PHST- 2016/04/22 06:00 [entrez] PHST- 2016/04/22 06:00 [pubmed] PHST- 2016/05/05 06:00 [medline] AID - 10.3724/sp.j.1123.2015.09016 [doi] PST - ppublish SO - Se Pu. 2015 Dec;33(12):1242-50. doi: 10.3724/sp.j.1123.2015.09016.