title: Rapid determination of methanol in black liquors by full evaporation headspace gas chromatography.
abstract: This paper reported a full evaporation headspace gas chromatographic (GC) technique for determination of methanol content in black liquors (pulping spent liquor). In this method, a very small volume (10-20 microL) of liquor sample is introduced into a headspace sample vial (20 mL) and heated up to a temperature of 105 degrees C. A near-complete mass transfer of methanol from the liquid phase to vapor phase (headspace), i.e., a full evaporation, can be achieved within 3 min. The methanol in the headspace of the vial is then measured by GC. The present method is simple, rapid and accurate.
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Li
authors.forename: Huaiyu
authors.initials: H
authors.lastname: Zhan
authors.forename: Shiyu
authors.initials: S
authors.lastname: Fu
authors.forename: Mengru
authors.initials: M
authors.lastname: Liu
authors.forename: Xin-Sheng
authors.initials: XS
authors.lastname: Chai
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D007220:Industrial Waste / Q000032:analysis*; D000432:Methanol / Q000032:analysis*; D015203:Reproducibility of Results; D018401:Sample Size; D012996:Solutions; D013696:Temperature; D013997:Time Factors; D014835:Volatilization
chemical_list: D007220:Industrial Waste; D012996:Solutions; D000432:Methanol