PMID- 25683431 OWN - NLM STAT- MEDLINE DCOM- 20150817 LR - 20191210 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 133 IP - 2 DP - 2012 Jul 15 TI - Dispersive liquid-liquid microextraction combined with sweeping micellar electrokinetic chromatography for the determination of some neonicotinoid insecticides in cucumber samples. PG - 544-50 LID - S0308-8146(12)00061-1 [pii] LID - 10.1016/j.foodchem.2012.01.028 [doi] AB - A rapid, simple and sensitive method has been developed for the analysis of some neonicotinoid insecticides in cucumber samples by using dispersive liquid-liquid microextraction (DLLME) coupled with sweeping in micellar electrokinetic chromatography (MEKC). Under optimised conditions, the enrichment factors were achieved in the range from 4000 to 10,000. The linearity of the method was in the range from 2.7 to 200 ng g(-1) for thiacloprid, acetamiprid and imidacloprid, and in the range from 4.0 to 200 ng g(-1) for imidaclothiz in cucumber samples, with the determination coefficients (r(2)) ranging from 0.9924 to 0.9968. The limits of detection (LODs, S/N=3) ranged from 0.8 to 1.2 ng g(-1). The relative standard deviations (RSDs) at the concentration levels of 10.0 and 50.0 ng g(-1) each of the neonicotinoid insecticides in cucumber samples varied from 3.8% to 6.3%. The developed method has been successfully applied to the analysis of the neonicotinoid insecticides in cucumbers with a satisfactory result. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Zhang, Shuaihua AU - Zhang S AD - Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, Hebei, China. FAU - Yang, Xiumin AU - Yang X AD - Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, Hebei, China. FAU - Yin, Xiaofang AU - Yin X AD - Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, Hebei, China. FAU - Wang, Chun AU - Wang C AD - Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, Hebei, China. FAU - Wang, Zhi AU - Wang Z AD - Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, Hebei, China. Electronic address: wangzhi@hebau.edu.cn. LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120125 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Imidazoles) RN - 0 (Insecticides) RN - 0 (Neonicotinoids) RN - 0 (Nitro Compounds) RN - 0 (Pyridines) RN - 0 (Thiazines) RN - 3BN7M937V8 (imidacloprid) RN - 5HL5N372P0 (acetamiprid) RN - DSV3A944A4 (thiacloprid) SB - IM MH - Chromatography, Micellar Electrokinetic Capillary/*methods MH - Cucumis sativus/*chemistry MH - Food Contamination MH - Imidazoles/analysis/isolation & purification MH - Insecticides/*analysis/*isolation & purification MH - Limit of Detection MH - Liquid Phase Microextraction/*methods MH - Neonicotinoids MH - Nitro Compounds/analysis/isolation & purification MH - Pyridines/analysis/isolation & purification MH - Thiazines/analysis/isolation & purification OTO - NOTNLM OT - Cucumber samples OT - Dispersive liquid-liquid microextraction OT - Micellar electrokinetic chromatography OT - Neonicotinoid insecticides OT - Sweeping EDAT- 2012/07/15 00:00 MHDA- 2015/08/19 06:00 CRDT- 2015/02/17 06:00 PHST- 2011/06/20 00:00 [received] PHST- 2012/01/10 00:00 [revised] PHST- 2012/01/14 00:00 [accepted] PHST- 2015/02/17 06:00 [entrez] PHST- 2012/07/15 00:00 [pubmed] PHST- 2015/08/19 06:00 [medline] AID - S0308-8146(12)00061-1 [pii] AID - 10.1016/j.foodchem.2012.01.028 [doi] PST - ppublish SO - Food Chem. 2012 Jul 15;133(2):544-50. doi: 10.1016/j.foodchem.2012.01.028. Epub 2012 Jan 25.