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首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >CHROMATOGRAPHIC METHODS FOR THE DETERMINATION OF ALKYLKETENE DIMER IN PULP AND PAPER MATRICES
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CHROMATOGRAPHIC METHODS FOR THE DETERMINATION OF ALKYLKETENE DIMER IN PULP AND PAPER MATRICES

机译：纸浆和造纸基质中烷基酮二聚体的色谱测定方法。

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摘要

Chromatographic procedures for the determination of alkylketene dimer (AKD) and stearone were evaluated. The best results were obtained when AKD was converted into its ketone form before determination by GC. Bound AKD in paper samples is best removed by digestion of the paper with either hydrochloric acid or sodium carbonate. A separation scheme based on solid-phase extraction was developed for the determination of hydrolysed AKD in deposits from alkaline paper mills, As different AKD emulsions have different chromatographic patterns, it is recommended that standards be prepared from the same AKD that was used in the sizing process. The GC determination of AKD and stearone can be significantly expedited by using Soxtec extraction (rather than Soxhlet extraction) and by employing short capillary GC columns. [References: 26]
机译：评估了测定烷基烯酮二聚体（AKD）和硬脂酮的色谱程序。将AKD转化为酮形式（通过GC测定）之前，可获得最佳结果。最好通过用盐酸或碳酸钠消化纸片来去除纸质样本中结合的AKD。开发了一种基于固相萃取的分离方案，用于测定碱性造纸厂沉积物中水解的AKD。由于不同的AKD乳剂具有不同的色谱图，建议使用与上浆相同的AKD制备标准液处理。通过使用Soxtec萃取（而不是索氏萃取）和使用短毛细管气相色谱柱，可以极大地加快AKD和硬脂酮的GC测定。 [参考：26]

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