期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1205, 期 1-2, 页码 182-185出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2008.08.020
关键词
vapor pressure; headspace extraction; liquid-phase microextraction; volatile organic compounds; gas chromatography-mass spectrometry
资金
- State High-Tech Program [2006AA09Z175]
- National Natural Science Foundation of China [20767006]
- Jilin Province Science & Technology Department Foundation of China [200705424]
Of the many parameters that affect the enrichment factors in headspace liquid-phase microextraction, in this study, we systematically investigated the influence of the vapor pressure of the extracting solvent. Seven extracting solvents with different vapor pressures were selected and tested. It was found that the vapor pressure of the extracting solvent dramatically affects the enrichment factor and the factor was increasing by decreasing the extracting solvent vapor pressure under given experimental conditions. The result was validated for volatile organic compounds such as polynuclear aromatic hydrocarbons, organochlorine pesticides and polychlorinated biphenyls. (C) 2008 Elsevier B.V. All rights reserved.
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