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首页> 外文期刊>Journal of separation science. >Comparison of three-phase hollow fiber liquid-phase microextraction based on reverse micelle with conventional two-phase hollow fiber liquid-phase microextraction and their applications for analysis of cinnamic acids in traditional Chinese medicines
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Comparison of three-phase hollow fiber liquid-phase microextraction based on reverse micelle with conventional two-phase hollow fiber liquid-phase microextraction and their applications for analysis of cinnamic acids in traditional Chinese medicines

机译：常规两相中空纤维液相微萃取的三相中空纤维液相微萃取的比较及其应用中的中药中肉桂酸分析的应用

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摘要

A novel three-phase hollow fiber liquid-phase microextraction was developed based on reverse micelle as extraction solvent and acceptor phase, and compared with conventional two-phase hollow fiber liquid-phase microextraction. Both procedures were used in the extraction and concentration of four cinnamic acids (caffeic acid, p-hydroxycinnamic acid, ferulic acid, and cinnamic acid) in traditional Chinese medicines prior to high-performance liquid chromatography analysis. Parameters affecting the two procedures were investigated and optimized to obtain the optimum enrichment factors. The mechanism of the developed procedure was explored and elucidated by comparison with conventional two-phase hollow fiber liquid-phase microextraction. Under the optimized conditions, the analytes' enrichment factors were between 50 and 118 for the proposed procedure, and 31-96 for conventional two-phase mode. Satisfactory linear ranges (r(2) >= 0.99), detection limits (0.1-0.6 ng/mL), precisions (<9.2%), and accuracies (recoveries: 80-123.1%) were observed for the two procedures. The results showed that the enrichment capacity of the proposed procedure for the cinnamic acids is better than that of conventional two-phase procedure, and both are eco-friendly, simple, and effective for the enrichment and detection of cinnamic acids in traditional Chinese medicines.
机译：基于萃取溶剂和受体相的反向胶束开发了一种新型三相中空纤维液相微萃取，并与常规的两相中中空纤维液相微萃取相比。在高性能液相色谱分析之前，在中药中的四种肉桂酸（咖啡酸，对羟基氨基酸，阿魏酸和肉桂酸）的提取和浓度中使用了两种程序。调查和优化影响两种程序的参数，以获得最佳的富集因子。通过与常规的双相中空纤维液相微萃取进行比较，探索和阐明了开发方法的机制。在优化的条件下，分析物的富集因子为50至118之间，拟议的方法和31-96用于常规两相模式。令人满意的线性范围（R（2）> = 0.99），检测限制（0.1-0.6ng / ml），矫正（<9.2％），以及两项程序的准确性（回收率：80-123.1％）。结果表明，肉桂酸提出的程序的富集产能优于常规两相程序，既是环保，简单，有效的富集和检测中药中肉桂酸的富集。

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