Rapid determination of methanol in black liquors by full evaporation headspace gas chromatography.
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.
Li
Hailong
H
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China.
Zhan
Huaiyu
H
Fu
Shiyu
S
Liu
Mengru
M
Chai
Xin-Sheng
XS
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
D007220:Industrial Waste; D012996:Solutions; D000432:Methanol