Evaluating quantitative determination of levoglucosan and hydroxyacetaldehyde in bio-oils by gas and liquid chromatography

P. S. Marathe, A. Juan, Xun Hu, R. J.M. Westerhof, S. R.A. Kersten (Corresponding Author)

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Abstract

This communication evaluates the suitability of gas and liquid chromatography for the quantification of levoglucosan and hydroxyacetaldehyde in bio-oils. It was found that both techniques can principally determine levoglucosan quantitatively in cellulose/biomass derived bio-oils. However, it is also shown that oligo-anhydrosugars present in the bio-oils undergo depolymerisation to levoglucosan during gas chromatography, resulting in an overestimation of the concentration of levoglucosan. Hydroxyacetaldehyde can only be determined quantitatively by liquid chromatography. Presented experimental evidence shows that the high temperature (200–320 °C) of injection in gas chromatography is a key factor causing oligo-anhydrosugars and hydroxyacetaldehyde to react during analysis, which may lead to flawed results.

Original languageEnglish
Pages (from-to)233-238
Number of pages6
JournalJournal of analytical and applied pyrolysis
Volume139
Early online date6 Mar 2019
DOIs
Publication statusPublished - 1 May 2019

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Liquid chromatography
Gas chromatography
Oils
Depolymerization
Cellulose
Biomass
Communication
glycolaldehyde
1,6-anhydro-beta-glucopyranose
Temperature

Keywords

  • UT-Hybrid-D
  • Gas chromatography (GC)
  • Hydroxyacetaldehyde
  • Levoglucosan
  • Liquid chromatography (LC)
  • Pyrolysis
  • Biomass

Cite this

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title = "Evaluating quantitative determination of levoglucosan and hydroxyacetaldehyde in bio-oils by gas and liquid chromatography",
abstract = "This communication evaluates the suitability of gas and liquid chromatography for the quantification of levoglucosan and hydroxyacetaldehyde in bio-oils. It was found that both techniques can principally determine levoglucosan quantitatively in cellulose/biomass derived bio-oils. However, it is also shown that oligo-anhydrosugars present in the bio-oils undergo depolymerisation to levoglucosan during gas chromatography, resulting in an overestimation of the concentration of levoglucosan. Hydroxyacetaldehyde can only be determined quantitatively by liquid chromatography. Presented experimental evidence shows that the high temperature (200–320 °C) of injection in gas chromatography is a key factor causing oligo-anhydrosugars and hydroxyacetaldehyde to react during analysis, which may lead to flawed results.",
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Evaluating quantitative determination of levoglucosan and hydroxyacetaldehyde in bio-oils by gas and liquid chromatography. / Marathe, P. S.; Juan, A.; Hu, Xun; Westerhof, R. J.M.; Kersten, S. R.A. (Corresponding Author).

In: Journal of analytical and applied pyrolysis, Vol. 139, 01.05.2019, p. 233-238.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Marathe, P. S.

AU - Juan, A.

AU - Hu, Xun

AU - Westerhof, R. J.M.

AU - Kersten, S. R.A.

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AB - This communication evaluates the suitability of gas and liquid chromatography for the quantification of levoglucosan and hydroxyacetaldehyde in bio-oils. It was found that both techniques can principally determine levoglucosan quantitatively in cellulose/biomass derived bio-oils. However, it is also shown that oligo-anhydrosugars present in the bio-oils undergo depolymerisation to levoglucosan during gas chromatography, resulting in an overestimation of the concentration of levoglucosan. Hydroxyacetaldehyde can only be determined quantitatively by liquid chromatography. Presented experimental evidence shows that the high temperature (200–320 °C) of injection in gas chromatography is a key factor causing oligo-anhydrosugars and hydroxyacetaldehyde to react during analysis, which may lead to flawed results.

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KW - Hydroxyacetaldehyde

KW - Levoglucosan

KW - Liquid chromatography (LC)

KW - Pyrolysis

KW - Biomass

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