Method for improving accuracy in full evaporation headspace analysis.
We report a new headspace analytical method in which multiple headspace extraction is incorporated with the full evaporation technique. The pressure uncertainty caused by the solid content change in the samples has a great impact to the measurement accuracy in the conventional full evaporation headspace analysis. The results (using ethanol solution as the model sample) showed that the present technique is effective to minimize such a problem. The proposed full evaporation multiple headspace extraction analysis technique is also automated and practical, and which could greatly broaden the applications of the full-evaporation-based headspace analysis.
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.|School of Materials Science and Engineering, South China University of Technology, Guangzhou, China.
Wei-Qi
WQ
Xie
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
Xin-Sheng
XS
Chai
ethanol; full evaporation; headspace gas chromatography; multiple headspace extraction