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J Chromatogr A

Title:		Combining membrane extraction with mobile gas chromatography for the field analysis of volatile organic compounds in contaminated waters
Author(s):		Hauser B; Popp P;
Address:		"UFZ Centre for Environmental Research Leipzig-Halle, Department of Analytical Chemistry, Leipzig, Germany"
Journal Title:		J Chromatogr A
Year:		2001
Volume:		909
Issue:		1
Page Number:		3 - 12
DOI:		10.1016/s0021-9673(00)00904-3
ISSN/ISBN:		0021-9673 (Print) 0021-9673 (Linking)
Abstract:		"A mobile gas chromatographic device (Airmobtx HC 1000 monitor manufactured by Airmotec, Germany), originally designed for the analysis of benzene, toluene, ethylbenzene and xylenes (BTEX) in air, was connected to a flow cell for dynamic membrane extraction. Volatile organic compounds (VOCs) diffuse out of a water stream through a hollow fibre, are enriched onto sorption tubes integrated in the mobile device, and are then thermally desorbed and analysed by gas chromatography-flame ionisation detection. Battery operation of the device enables continuous on-site analysis of VOCs. Influences of the water flow-rate on system response and memory effects were investigated. The linear range of the method depends on the flow-rate of the water sample and did not exceed two orders of magnitude. The detection limits for trichloroethene, chlorobenzene and the BTEX compounds were found to be between 0.1 and 1.0 microg/l using a water flow-rate of 30 ml/min. Dynamic membrane extraction combined with the mobile gas chromatographic device was used for the on-site analysis of contaminated waters in the area of Leipzig"
Keywords:		"Benzene/analysis Benzene Derivatives/*analysis Chlorobenzenes/analysis Chromatography, Gas/instrumentation/*methods Quality Control Reproducibility of Results Toluene/analysis Trichloroethylene/analysis Volatilization Water Pollutants/*analysis Xylenes/an;"
Notes:		"MedlineHauser, B Popp, P eng Netherlands 2001/02/24 J Chromatogr A. 2001 Feb 9; 909(1):3-12. doi: 10.1016/s0021-9673(00)00904-3"