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Tytuł:
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In-line coupling headspace liquid-phase microextraction with capillary electrophoresis.
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Autorzy:
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Xie HY; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
He YZ
Gan WE
Yu CZ
Han F
Ling DS
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Źródło:
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Journal of chromatography. A [J Chromatogr A] 2010 Feb 19; Vol. 1217 (8), pp. 1203-7. Date of Electronic Publication: 2009 Dec 16.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't; Validation Study
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Język:
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English
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Imprint Name(s):
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Original Publication: Amsterdam ; New York : Elsevier, 1993-
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MeSH Terms:
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Chemical Fractionation/*instrumentation
Electrophoresis, Capillary/*methods
Fresh Water/*analysis
Phenols/*analysis
Water Pollutants, Chemical/*analysis
Chemical Fractionation/methods ; Equipment Design ; Limit of Detection ; Phenols/isolation & purification ; Water Pollutants, Chemical/isolation & purification
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Substance Nomenclature:
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0 (Phenols)
0 (Water Pollutants, Chemical)
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Entry Date(s):
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Date Created: 20091226 Date Completed: 20100413 Latest Revision: 20191210
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Update Code:
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20240104
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DOI:
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10.1016/j.chroma.2009.12.028
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PMID:
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20034631
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An analytical technique of in-line coupling headspace liquid-phase microextraction (HS-LPME) with capillary electrophoresis (CE) was proposed to determine volatile analytes. A special cover unit of the sample vial was adopted in the coupling method. To evaluate the proposed method, phenols were used as model analytes. The parameters affecting the extraction efficiency were investigated, including the configuration of acceptor phase, kind and concentration of acceptor solution, extraction temperature and time, salt-out effect, sample volume, etc. The optimal enrichment factors of HS-LPME were obtained with the sample volume of about half of sample vials, which were confirmed by both the theoretical prediction and experimental results. The enrichment factors were obtained from 520 to 1270. The limits of detection (LODs, S/N=3) were in the range from 0.5 to 1 ng/mL each phenol. The recoveries were from 87.2% to 92.7% and the relative standard deviations (RSDs) were lower than 5.7% (n=6). The proposed method was successfully applied to the quantitative analysis of the phenols in tap water, and proved to be a simple, convenient and reliable sample preconcentration and determination method for volatile analytes in water samples.
(Copyright 2009 Elsevier B.V. All rights reserved.)
