A gas chromatography-quartz crystal microbalance for speciation of sulfur compounds in landfill gas |
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Authors: | Rocha-Santos T A Gomes M T Duarte A C Pereira Oliveira J A |
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Institution: | Department of Chemistry, University of Aveiro, Portugal. teralex@dq.ua.pt |
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Abstract: | A new method, based on separation with gas chromatography and detection with a quartz crystal microbalance, was used for the quantification of ethane-1-thiol, propane-1-thiol, ethyl methyl sulfide, propane-2-thiol, butane-2-thiol and butane-1-thiol. The analytical error, the analysis time and the general analytical performance are identical for gas chromatography-mass spectrometry (GC-MS) and gas chromatography-quartz crystal microbalance (GC-QCM). However, the GC-QCM method constitutes a low cost alternative to GC-MS for monitoring individual sulfur compounds in landfill gas. It is an easily assembled apparatus made with an injection device, a furnace, a column, a crystal cell and a quartz crystal. |
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