NDLI: Coupling of ionic liquid-based headspace single-drop microextraction with GC for sensitive detection of phenols.

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Coupling of ionic liquid-based headspace single-drop microextraction with GC for sensitive detection of phenols.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhao, Fa-Qiong Li, Jing Zeng, Bai-Zhao
Description	Author Affiliation: Zhao FQ ( Department of Chemistry, Wuhan University, Wuhan, P. R. China. fqzhao@whu.edu.cn)
Abstract	A headspace single-drop microextraction (SDME) based on ionic liquid (IL) has been developed for the gas chromatographic determination of phenols. The volume of IL microdrop used was 1 microL. After extraction, the analytes were desorbed from the drop in the injection port and the involatile IL was withdrawn into the microsyringe. To facilitate the withdrawal of IL the upper diameter of the split inlet liner was enlarged to some extent. Some parameters were optimized for the determination of phenols. Under the selected conditions, i.e., desorption for 100 s at 210 degrees C after extraction for 25 min at 50 degrees C in solutions (pH 3) containing 0.36 g/mL sodium chloride, the LODs, RSDs, and the average enrichment factors of phenols were 0.1-0.4 ng/mL, 3.6-9.5% (n=5), and 35-794, respectively. The proposed procedure was applied to the determination of phenols in lake water and wastewater samples, and the spiked recoveries were in the range of 81-111% at a spiked level of 0.4 microg/mL. This method is a promising alternative for the sensitive determination of phenolic compounds.
File Format	HTM / HTML
ISSN	16159306
Issue Number	16-17
Volume Number	31
e-ISSN	16159314
Journal	Journal of Separation Science
Language	English
Publisher	Wiley-VCH
Publisher Date	2008-09-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Analytical Discipline Chemistry Ionic Liquids Chemistry Phenols Analysis Solid Phase Microextraction Methods Chromatography, Gas Instrumentation Fresh Water Hydrogen-ion Concentration Sensitivity And Specificity Sodium Chloride Temperature Time Factors Water Pollutants, Chemical Journal Article
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Filtration and Separation

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