NDLI: Low-density solvent-based vortex-assisted surfactant-enhanced emulsification liquid-liquid microextraction and its application.

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Low-density solvent-based vortex-assisted surfactant-enhanced emulsification liquid-liquid microextraction and its application.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Yang, Zhong-Hua Liu, Dong-Hui Zhao, Wen-ting Wu, Tong Zhou, Zhi-Qiang Wang, Peng
Description	Author Affiliation: Yang ZH ( Department of Applied Chemistry, China Agricultural University, Beijing, P. R. China.)
Abstract	For the first time, the low-density solvent-based vortex-assisted surfactant-enhanced emulsification liquid-liquid microextraction, followed by GC-flame photometric detection has been developed for the determination of eight organophosphorus pesticides in aqueous samples. A small volume of organic extraction solvent (toluene) was dispersed into the aqueous samples by the assistance of surfactant and vortex agitator. The extraction was performed in a special disposable polyethylene pipette, allowing using the reagents with lower density than water as extraction solvents. The influence parameters were systemically investigated and optimized: toluene (30 µL) and Triton X-100 (0.2 mmol/L) were used as the extraction solvent and the surfactant, respectively, and the extraction was performed for 1 min under room temperature without adding sodium chloride. Under the optimum conditions, the validation parameters such as the RSD (n = 6; 2.1-11.3%), LOD (0.005 and 0.05 µg/L), and linear range (0.1-50.0 µg/L with correlation coefficients (0.9958-0.9992) showed the method was satisfying. The proposed method has been successfully applied to the determination of the organophosphorus pesticides in real samples with recoveries between 82.8 and 100.2%.
File Format	HTM / HTML
ISSN	16159306
Issue Number	5
Volume Number	36
e-ISSN	16159314
Journal	Journal of Separation Science
Language	English
Publisher	Wiley-VCH
Publisher Date	2013-03-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Analytical Discipline Chemistry Liquid Phase Microextraction Methods Pesticides Isolation & Purification Surface-active Agents Chemistry Water Pollutants, Chemical Chromatography, Gas Emulsions Limit Of Detection Instrumentation Analysis Evaluation Studies Journal Article
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Filtration and Separation

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Low-density solvent-based vortex-assisted surfactant-enhanced-emulsification liquid-liquid microextraction combined with gas chromatography-mass spectrometry for the fast determination of phthalate esters in bottled water.

Novel solvent-free microwave-assisted extraction coupled with low-density solvent-based in-tube ultrasound-assisted emulsification microextraction for the fast analysis of organophosphorus pesticides in soils.

Determination of phthalate esters in liquor samples by vortex-assisted surfactant-enhanced-emulsification liquid-liquid microextraction followed by GC-MS.

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Vortex-assisted surfactant-enhanced-emulsification liquid-liquid microextraction of biogenic amines in fermented foods before their simultaneous analysis by high-performance liquid chromatography.

Vortex-assisted liquid-liquid microextraction combined with gas chromatography-mass spectrometry for the determination of organophosphate pesticides in environmental water samples and wines.

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Determination of volatile organic compounds in water using ultrasound-assisted emulsification microextraction followed by gas chromatography.

Low-density solvent-based vortex-assisted surfactant-enhanced emulsification liquid-liquid microextraction and its application.

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