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J Chromatogr A


Title:Introduction of large volumes of water-containing samples into a gas chromatograph. Improved retention of volatile solutes through the swing system
Author(s):Pocurull E; Biedermann M; Grob K;
Address:"Rovira i Virgili University, Department of Analytical Chemistry and Organic Chemistry, Imperial Tarraco, Tarragona, Spain"
Journal Title:J Chromatogr A
Year:2000
Volume:876
Issue:1-Feb
Page Number:135 - 145
DOI: 10.1016/s0021-9673(00)00147-3
ISSN/ISBN:0021-9673 (Print) 0021-9673 (Linking)
Abstract:"The swing system is designed for introducing large volumes of water-containing samples into a gas chromatograph. Sample evaporation and solvent-solute separation are performed in separate compartments. This widens the application range to compounds of higher volatility. Sample evaporation takes place in a hot chamber packed with Carbofrit. Solvent-solute separation is performed in a cascade of increasing powers of retention. While high boiling solutes are retained in an oven-thermostatted retaining precolumn, the more volatile components are retained by a packed bed of sorbents of increasing powers of retention situated in a programmed temperature vaporiser. For elution, the gas flow is reversed and the solutes are discharged from the heated packed bed through the retaining precolumn into the separation column"
Keywords:"Chromatography, Gas/instrumentation/*methods Fatty Acids/analysis/chemistry Nebulizers and Vaporizers Reference Standards Temperature Time Factors Water/chemistry;"
Notes:"MedlinePocurull, E Biedermann, M Grob, K eng Netherlands 2000/05/24 J Chromatogr A. 2000 Apr 21; 876(1-2):135-45. doi: 10.1016/s0021-9673(00)00147-3"

 
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