PMID- 23474198 OWN - NLM STAT- MEDLINE DCOM- 20140121 LR - 20130705 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1300 DP - 2013 Jul 26 TI - Development of a home-made extraction device for vortex-assisted surfactant-enhanced-emulsification liquid-liquid microextraction with lighter than water organic solvents. PG - 58-63 LID - S0021-9673(13)00361-0 [pii] LID - 10.1016/j.chroma.2013.02.054 [doi] AB - We have developed a novel vortex-assisted surfactant-enhanced-emulsification liquid-liquid microextraction using the low density solvent for the determination of eight organophosphorus pesticides (OPPs) in water samples. The key point of this method is the application of a special home-made extraction device. The influence parameters relevant to this method were systemically investigated and the optimum conditions were as follow: 35muL of toluene was used as extraction solvent and 0.2mmol L-1 Triton X-100 was chosen as the surfactant to enhance the emulsification. Under the optimum experimental conditions, the limit of detections (LODs) of the method was ranged between 0.01 and 0.05mugL(-1) and the relative standard deviations (RSDs) were 2.9-8.1%. The calibration curve was linear in the range of 0.1-50.0mugL(-1), with the correlation coefficients (r) varying from 0.9949 to 0.9991. Finally, the developed method has been successfully applied to the determination of eight organophosphorus pesticides in river, reservoir and well water samples with recoveries between 82.1% and 98.7%. CI - Copyright (c) 2013 Elsevier B.V. All rights reserved. FAU - Yang, Zhong-Hua AU - Yang ZH AD - Department of Applied Chemistry, China Agricultural University, Beijing 100193, China. FAU - Wang, Peng AU - Wang P FAU - Zhao, Wen-ting AU - Zhao WT FAU - Zhou, Zhi-Qiang AU - Zhou ZQ FAU - Liu, Dong-Hui AU - Liu DH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130224 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Organothiophosphates) RN - 0 (Solvents) RN - 0 (Surface-Active Agents) RN - 0 (Water Pollutants, Chemical) RN - 3FPU23BG52 (Toluene) RN - 9002-93-1 (Octoxynol) SB - IM MH - Chromatography, Gas MH - Fresh Water/chemistry MH - Limit of Detection MH - Liquid Phase Microextraction/*instrumentation/*methods MH - Octoxynol/chemistry MH - Organothiophosphates/analysis/isolation & purification MH - Osmolar Concentration MH - Reproducibility of Results MH - Solvents/*chemistry MH - Surface-Active Agents/*chemistry MH - Temperature MH - Toluene/chemistry MH - Water Pollutants, Chemical/analysis/isolation & purification OTO - NOTNLM OT - Gas chromatography OT - Liquid-liquid microextraction OT - Reservoir OT - River OT - Well water EDAT- 2013/03/12 06:00 MHDA- 2014/01/22 06:00 CRDT- 2013/03/12 06:00 PHST- 2012/12/05 00:00 [received] PHST- 2013/02/17 00:00 [revised] PHST- 2013/02/18 00:00 [accepted] PHST- 2013/03/12 06:00 [entrez] PHST- 2013/03/12 06:00 [pubmed] PHST- 2014/01/22 06:00 [medline] AID - S0021-9673(13)00361-0 [pii] AID - 10.1016/j.chroma.2013.02.054 [doi] PST - ppublish SO - J Chromatogr A. 2013 Jul 26;1300:58-63. doi: 10.1016/j.chroma.2013.02.054. Epub 2013 Feb 24.