离子液体辅助顶空气相色谱法测定其胶乳中烷基烯酮二聚体的含量。
Determination of the content of alkyl ketene dimer in its latex by an ionic-liquid assisted headspace gas chromatography.
作者信息
Yan Ning, Wan Xiao-Fang, Chai Xin-Sheng, Chen Run-Quan, Chen Chun-Xia
机构信息
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China.
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China; National Paper Products Quality Supervision Inspection Center, Dongguan, China.
出版信息
J Chromatogr A. 2017 Dec 29;1530:19-22. doi: 10.1016/j.chroma.2017.11.010. Epub 2017 Nov 7.
This paper reports on an ionic-liquid assisted headspace gas chromatographic (HS-GC) for the determination of the content of alkyl ketene dimer (AKD) in its latex samples, in which the GC system was equipped with a thermal conductivity detector (TCD). The method was based on the AKD hydrolysis conducted in 1-butyl-3-methylimidazolium chloride (ionic-liquid) added medium at 100°C for 10min in a closed headspace sample vial, and the measured CO (the resulting product of the hydrolysis) by HS-GC. The results showed that the present method has a good measurement precision (RSD <2.3%) and accuracy (recoveries from 96 - 105%), and the limit of quantitation (LOQ) is 0.9%. The present method is very suitable to be used for the routine check of AKD content in its latex sample in mill applications. The study also showed that the content of AKD in the tested commercial latex samples were in the range of 3.5-12%.
本文报道了一种离子液体辅助顶空气相色谱法（HS-GC），用于测定胶乳样品中烷基烯酮二聚体（AKD）的含量，该气相色谱系统配备了热导检测器（TCD）。该方法基于在封闭的顶空样品瓶中，于100°C在添加了1-丁基-3-甲基咪唑氯化物（离子液体）的介质中进行AKD水解10分钟，然后通过HS-GC测定水解产物一氧化碳（CO）。结果表明，该方法具有良好的测量精度（相对标准偏差<2.3%）和准确度（回收率为96 - 105%），定量限（LOQ）为0.9%。该方法非常适合用于造纸工业中AKD胶乳样品含量的常规检测。研究还表明，测试的商业胶乳样品中AKD的含量在3.5 - 12%范围内。
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