Headspace Liquid-Phase Microextraction Solvent Vapor Pressure

October 1, 2008

A research group from Yanbian University and the Key Laboratory of Organism Functional Factors of the Changbai Mountain (both Yanji City, Jilin Province, China) examined the effect of the vapor pressure of the extracting solvent on the enrichment factor in headspace liquid-phase microextraction.

A research group from Yanbian University and the Key Laboratory of Organism Functional Factors of the Changbai Mountain (both Yanji City, Jilin Province, China) examined the effect of the vapor pressure of the extracting solvent on the enrichment factor in headspace liquid-phase microextraction. They tested seven extracting solvents with different vapor pressures, and found that the extracting solvent’s vapor pressure dramatically affects the enrichment factor. The factor was found to increase with a decrease in the solvent’s vapor pressure. They validated the result for volatile organic compounds such as polynuclear aromatic hydrocarbons, organochlorine pesticides, and polychlorinated biphenyls.