PMID- 26990736 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20220330 IS - 1873-376X (Electronic) IS - 1570-0232 (Linking) VI - 1017-1018 DP - 2016 Apr 1 TI - Multi-residue analysis of 26 organochlorine pesticides in Alpinia oxyphylla by GC-ECD after solid phase extraction and acid cleanup. PG - 211-220 LID - S1570-0232(16)30149-0 [pii] LID - 10.1016/j.jchromb.2016.03.009 [doi] AB - A simple and effective multi-residue method was developed and validated for the analysis of 26 organochlorine pesticide residues in Alpinia oxyphylla by a gas chromatography with an electron capture detector (GC-ECD). The target pesticides were extracted by sonication and cleaned up with florisil solid phase extraction and sulphuric acid. Some crucial parameters, including extraction solvent and time, sorbent type, elute solvent and concentration of sulphuric acid were optimized to improve the performance of sample preparation procedure. The optimized method gave high sensitivity with detection limit ranging from 0.1 to 2.0mug/kg. Matrix-matched calibration was employed for the quantification, and a wide linear range (from 1.0 to 1000mug/kg) with r(2) values ranging from 0.9971 to 0.9998 was obtained. For the majority of the tested pesticides, the average recoveries were in acceptable range (between 70% and 110%) with relative standard deviation values below 15.0%. Matrix effect was evaluated for target compounds through the study of ratio of peak area obtained in the solvent and blank matrix. The proposed method was applied to simultaneously analyze 26 pesticides in 55 batches of Alpinia oxyphylla samples. 3 samples were found to be positive with four pesticides (alpha-BHC, quintozene, trans-chlordane and op'-DDD), which were confirmed by gas chromatography-mass spectrometry (GC-MS) in selective ion monitoring (SIM) mode. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - Zhao, Xiangsheng AU - Zhao X AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China. FAU - Zhou, Yakui AU - Zhou Y AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China. FAU - Kong, Weijun AU - Kong W AD - Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China. FAU - Gong, Bao AU - Gong B AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China. FAU - Chen, Deli AU - Chen D AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China. FAU - Wei, Jianhe AU - Wei J AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China; Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China. Electronic address: jhwei@implad.ac.cn. FAU - Yang, Meihua AU - Yang M AD - Hainan Branch Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Wanning 571533, China; Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China. Electronic address: yangmeihua15@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160309 PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 RN - 0 (Acids) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticide Residues) SB - IM MH - Acids/*isolation & purification MH - Alpinia/*chemistry MH - Chromatography, Gas/*methods MH - Hydrocarbons, Chlorinated/*analysis MH - Pesticide Residues/*analysis MH - Solid Phase Microextraction/*methods OTO - NOTNLM OT - Alpinia oxyphylla OT - Gas chromatography-electron capture detection OT - Organochlorine pesticides OT - Solid-phased extraction EDAT- 2016/03/19 06:00 MHDA- 2016/12/15 06:00 CRDT- 2016/03/19 06:00 PHST- 2015/11/06 00:00 [received] PHST- 2016/02/24 00:00 [revised] PHST- 2016/03/07 00:00 [accepted] PHST- 2016/03/19 06:00 [entrez] PHST- 2016/03/19 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - S1570-0232(16)30149-0 [pii] AID - 10.1016/j.jchromb.2016.03.009 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2016 Apr 1;1017-1018:211-220. doi: 10.1016/j.jchromb.2016.03.009. Epub 2016 Mar 9.