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J Chromatogr A

Title:		Determination of the solubility of low volatility liquid organic compounds in water using volatile-tracer assisted headspace gas chromatography
Author(s):		Zhang SX; Chai XS; Barnes DG;
Address:		"State Key Laboratory of Pulp and Paper Engineering, Guangzhou, Guangdong, China. State Key Laboratory of Pulp and Paper Engineering, Guangzhou, Guangdong, China. Electronic address: xschai@gmail.com. School of Environment and Energy, South China University of Technology, Guangzhou, China"
Journal Title:		J Chromatogr A
Year:		2016
Volume:		20160119
Issue:
Page Number:		1 - 5
DOI:		10.1016/j.chroma.2016.01.044
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"This study reports a new headspace gas chromatographic method (HS-GC) for the determination of water solubility of low volatility liquid organic compounds (LVLOs). The HS-GC analysis was performed on a set of aqueous solutions containing a range of concentrations of toluene-spiked (as a tracer) LVLOs, from under-saturation to over-saturation. A plot of the toluene tracer GC signal vs. the concentration of the LVLO results in two lines of different slopes that intersect at the concentration corresponding to the compound's solubility in water. The results showed that the HS-GC method has good precision (RSD <6.3%) and good accuracy, in which the relative deference between the data measured by the HS-GC method and the reference method were within 6.0%. The HS-GC method is simple and particularly suitable for measuring the solubility of LVLOs at elevated temperatures. This approach should be of special interest to those concerned about the impact of the presence of low-volatility organic liquids in waters of environmental and biological systems"
Keywords:		"Chemistry Techniques, Analytical/*methods *Chromatography, Gas Environmental Monitoring/*methods Solubility Toluene/analysis Volatile Organic Compounds/*analysis Volatilization Water/*chemistry Water Pollutants, Chemical/analysis Gas chromatography Headsp;"
Notes:		"MedlineZhang, Shu-Xin Chai, Xin-Sheng Barnes, Donald G eng Research Support, Non-U.S. Gov't Review Netherlands 2016/02/07 J Chromatogr A. 2016 Feb 26; 1435:1-5. doi: 10.1016/j.chroma.2016.01.044. Epub 2016 Jan 19"