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Anal Bioanal Chem

Title:		Sampling of benzene in tar matrices from biomass gasification using two different solid-phase sorbents
Author(s):		Osipovs S;
Address:		"Department of Chemistry, Daugavpils University, Vienibas 13, 5401, Daugavpils, Latvia. sergejs.osipovs@du.lv"
Journal Title:		Anal Bioanal Chem
Year:		2008
Volume:		20071227
Issue:		4
Page Number:		1409 - 1417
DOI:		10.1007/s00216-007-1809-7
ISSN/ISBN:		1618-2650 (Electronic) 1618-2642 (Linking)
Abstract:		"Biomass tar mainly consists of stable aromatic compounds such as benzene and polyaromatic hydrocarbons, benzene being the biggest tar component in real biomass gasification gas. For the analysis of individual tar compounds, the solid-phase adsorption method was chosen. According to this method, tar samples are collected on a column with an amino-phase sorbent. With a high benzene concentration in biomass tar, some of the benzene will not be collected on the amino-phase sorbent. To get over this situation, we have installed another column with activated charcoal which is intended for collection of volatile organic compounds, including benzene, after the column with the amino-phase sorbent. The study of maximal adsorption amounts of various compounds on both adsorbents while testing different sampling volumes led to the conclusion that benzene is a limiting compound. The research proved that the use of two sorbents (500 mg + 100 mg) connected in series allows for assessment of tar in synthesis gas with a tar concentration up to 30-40 g m(-3), which corresponds to the requirements of most gasifiers"
Keywords:		"Adsorption Benzene/*analysis *Biomass Calibration Chromatography, Gas Gases/*chemistry Tars/*chemistry Temperature;"
Notes:		"MedlineOsipovs, Sergejs eng Germany 2008/01/02 Anal Bioanal Chem. 2008 Jun; 391(4):1409-17. doi: 10.1007/s00216-007-1809-7. Epub 2007 Dec 27"