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Determination of methanol in biodiesel by headspace solid phase microextraction

Authors
Publisher
Elsevier Ltd
Publication Date
Volume
99
Issue
13
Identifiers
DOI: 10.1016/j.biortech.2007.09.088
Keywords
  • Headspace Solid Phase Microextraction
  • Biodiesel
  • Methanol

Abstract

Abstract A new direct gas chromatography procedure (headspace solid phase microextraction) was developed for the quantitative determination of methanol in biodiesel. The analysis was performed by exposing a carboxen–polydimethylsiloxane SPME fiber assembly to the headspace of the biodiesel sample. The gas chromatography used a HP-5 capillary column and flame ionization detection. A polynomial relationship was observed between the methanol concentration and its peak area. This method showed good reproducibility (average relative standard deviation 7.06%) and recovery (average recovery 100.2%).

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