Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China.
Anal Chim Acta. 2012 Feb 17;715:49-56. doi: 10.1016/j.aca.2011.12.017. Epub 2011 Dec 19.
A new multi-channel purge and trap system coupled with ion chromatography for the determination of six alkylamines in cosmetics was developed. The proposed method, based on purge and trap of the volatile alkylamines, involved in a miniaturization and multi-channel integration of classical steam distillation and a simple approach for routine labs. The procedure was rapidly achieved within 10 min and the matrix interferences could be effectively eliminated. Sample pretreatment frequency was higher than 40 h(-1). The linear ranges were 0.1-15 mg L(-1) and the detection limits varied from 0.023 to 0.038 mg L(-1). This method was successfully utilized to determine the amounts of alkylamines in cosmetics with recoveries ranging from 80.3 to 105.5% and the relative standard deviations (RSDs) ranging from 0.78 to 7.5%. It was proved to be accurate, time-saving, and suitable for the determination of large numbers of cosmetics in a short time.
建立了一种新的多通道吹扫捕集系统，并将其与离子色谱联用，用于测定化妆品中的六种烷基胺。该方法基于挥发性烷基胺的吹扫捕集，采用经典的蒸汽蒸馏的微型化和多通道集成，以及常规实验室的简单方法。该方法在 10 分钟内快速完成，并且可以有效地消除基质干扰。样品预处理频率高于 40 h(-1)。线性范围为 0.1-15 mg L(-1)，检测限在 0.023 至 0.038 mg L(-1)之间。该方法成功地用于测定化妆品中烷基胺的含量，回收率在 80.3%至 105.5%之间，相对标准偏差（RSD）在 0.78%至 7.5%之间。该方法准确、省时，适合于短时间内大量化妆品的测定。
