PMID- 22679827 OWN - NLM STAT- MEDLINE DCOM- 20130712 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 30 IP - 2 DP - 2012 Feb TI - [A novel solid phase extraction column combined with ultra performance liquid chromatography/tandem mass spectrometry for selective enrichment and determination of clenbuterol in pork]. PG - 141-5 AB - A simple and efficient method based on a novel solid phase extraction (SPE) cartridge and ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/ MS) was developed for the determination of clenbuterol residue in pork. The minced pork sample was ultrasonically extracted by 5% (v/v) perchloric acid and centrifuged at 10 000 r/min for 15 min, then the supernatant was purified by an SMCX cartridge, which is a novel SPE column based on homemade silica matrix with two mixed modes of reversed-phase and strong cation exchange, for the selective enrichment and purification of the analyte. The linear range of the method was 0.25 - 50 microg/kg with a correlation coefficient of 0.998 2. The average recoveries ranged from 62.2% to 72.0% at the three spiked levels of 1.25, 12.5 and 50 microg/kg with the relative standard deviations (RSDs) between 4.2% and 6.1%. The limit of detection (S/N = 3) was 0.05 microg/kg. The method is simple, fast and can be extended to enrich and determine beta-agonist drugs. FAU - Meng, Wenying AU - Meng W AD - School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. FAU - Guo, Zhimou AU - Guo Z FAU - Shen, Weijian AU - Shen W FAU - Shen, Chongyu AU - Shen C FAU - Wu, Bin AU - Wu B FAU - Liu, Yanming AU - Liu Y FAU - Zhang, Feifang AU - Zhang F FAU - Liang, Xinmiao AU - Liang X LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Adrenergic beta-Agonists) RN - XTZ6AXU7KN (Clenbuterol) SB - IM MH - Adrenergic beta-Agonists/analysis MH - Animals MH - Chromatography, High Pressure Liquid/*methods MH - Clenbuterol/*analysis MH - Food Contamination/*analysis MH - Meat/*analysis MH - Solid Phase Extraction/methods MH - Swine MH - Tandem Mass Spectrometry/*methods EDAT- 2012/06/12 06:00 MHDA- 2013/07/16 06:00 CRDT- 2012/06/12 06:00 PHST- 2012/06/12 06:00 [entrez] PHST- 2012/06/12 06:00 [pubmed] PHST- 2013/07/16 06:00 [medline] AID - 10.3724/sp.j.1123.2011.09038 [doi] PST - ppublish SO - Se Pu. 2012 Feb;30(2):141-5. doi: 10.3724/sp.j.1123.2011.09038.