title: Rapid determination of moisture content in paper materials by multiple headspace extraction gas chromatography.
abstract: This paper describes a new method for the rapid determination of the moisture content in paper materials. The method is based on multiple headspace extraction gas chromatography (MHE-GC) at a temperature above the boiling point of water, from which an integrated water loss from the tested sample due to evaporation can be measured and from which the moisture content in the sample can be determined. The results show that the new method has a good precision (with the relative standard deviation <0.96%), high sensitivity (the limit of quantitation=0.005%) and good accuracy (the relative differences <1.4%). Therefore, the method is quite suitable for many uses in research and industrial applications.
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
authors.forename: Wei-Qi
authors.initials: WQ
authors.lastname: Xie
authors.affiliation: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China. Electronic address: xschai@gmail.com.
authors.forename: Xin-Sheng
authors.initials: XS
authors.lastname: Chai
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002849:Chromatography, Gas; D010209:Paper; D013696:Temperature; D014867:Water / Q000032:analysis*
chemical_list: D014867:Water
keywords: Gas chromatography; Moisture content; Multiple headspace extraction; Paper materials