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Talanta. 2018 Jan 1;176:47-51. doi: 10.1016/j.talanta.2017.08.008. Epub 2017 Aug 3.

Determination of volatile organic compounds in eucalyptus fast pyrolysis bio-oil by full evaporation headspace gas chromatography.

Author information

1
Departamento de Química e Biologia, Universidade Tecnológica Federal do Paraná, Curitiba 81280 340, PR, Brazil.
2
Laboratório de Análises de Combustíveis Automotivos (Lacaut), Universidade Federal do Paraná, Curitiba 81531-980, PR, Brazil.
3
Embrapa Florestas, Estrada da Ribeira, km 111, C.P. 319, Guaraituba, Colombo 88411 000, PR, Brazil.

Abstract

This paper reports a full evaporation (FE) headspace gas chromatographic (HS-GC) method for the determination of the volatile organic compounds (VOCs) in bio-oil (i.e. methanol, ethanol, acetone, acetic acid and furfural). The method uses a 4μL sample of bio-oil in a headspace vial (ca. 20mL). Complete evaporation of the compounds was achieved after seven minutes at 90°C. The method showed good precision and accuracy for methanol, ethanol, acetone and acetic acid. The recovery of furfural was low (74.3%). The results showed that the protocol can be applied for the determination of methanol, ethanol, acetone and acetic acid in bio-oil. Detection limits ranged from 0.13 to 0.16μg. Acetic acid was the dominant analyte in the heavy bio-oil and light bio-oil analysis (113. 3 and 85.1µgmg-1, respectively), followed by methanol, ethanol, and acetone. The polymerisation of furfural was suspected as the cause of its poor quantification.

KEYWORDS:

Biofuel; Biomass; FID; Wood

PMID:
28917778
DOI:
10.1016/j.talanta.2017.08.008
[Indexed for MEDLINE]

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