Comparison of two methods of measuring wood pyrolysis tar
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- 作者：A. Dufour ; P. Girods ; E. Masson ; S. Norm ; Y. Rogaume ; A. Zoulalian
- 关键词：Biomass pyrolysis ; Tar sampling ; GC– ; MS analysis ; Solid-phase adsorption
- 刊名：Journal of Chromatography A
- 出版年：2007
- 出版时间：14 September 2007
- 年：2007
- 卷：1164
- 期：1-2
- 页码：240-247
- 全文大小：396 K
文摘
Two methods for the sampling and analysis of tar produced from wood pyrolysis were compared. The first method used a conventional cold-trapping technique in solvent-filled impingers followed by liquid injection. The second one is a new application of multibed solid-phase adsorbent (SPA) tubes followed by thermal desorption (TD). Both methods are based on gas chromatography (GC) coupled with mass spectrometry (MS). Quantification was performed with a well reproducible GC–MS method with three internal deuterated standards. The SPA/TD method offers several advantages. No solvent is required, the detection levels are improved, and gas chromatography separation is easier. Moreover, sampling time is reduced from about 1 h (for the conventional cold-trapping technique in impingers) to a few seconds. No discrimination was observed between the two sampling methods for the 10 quantified compounds (aromatic compounds from benzene to phenanthrene and phenols) except for benzene.