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Method for improving accuracy in full evaporation headspace analysis
Author(s) -
Xie WeiQi,
Chai XinSheng
Publication year - 2017
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201601358
Subject(s) - evaporation , extraction (chemistry) , chromatography , chemistry , quantitative analysis (chemistry) , sample preparation , analytical chemistry (journal) , thermodynamics , physics
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.