Citation: Ying Ying Zhong, Wen Fang Zhou, Zhen Zhen Hu, Mei Lan Chen, Yan Zhu. Novel additives for the separation of organic acids by ion-pair chromatography[J]. Chinese Chemical Letters, ;2010, 21(4): 453-456. doi: 10.1016/j.cclet.2009.12.032 shu

Novel additives for the separation of organic acids by ion-pair chromatography

a Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
b Biology and Environment Engineering College of Zhejiang Shuren University, Hangzhou 310015, China

Received Date: 17 July 2009

Fund Project: This research was financially supported by National Natural Science Foundation of China (No. 20775070), Zhejiang Qianjiang Project of Science and Technology for Competent People (No. 2008R10028), Zhejiang Provincial Natural Science Foundation of China (Nos. R4080124, Y4080064) and Zhejiang Provincial Analysis and Testing Foundation of China (No. 2007F70061).

This paper proposes the use of novel surfactant additives for the separation of organic acids by ion-pair chromatography and studies the influences of surfactants on the chromatographic separation behaviors.Researches have been carried out on both silica gel matrix and polymer supporters in order to compare the two ordinary kinds of stationary phases,and the phenomenon is similar.Separation is based on differences in the stabilities of analyte-additive complexes in solution.Retention times of analytes can be varied over a large range by varying the additive concentration.The results indicate that the additives of proper concentrations can reduce the retention times of different organic acids while the resolution remains the same.The larger the molecular weight is,the greater the shift of the retention time is.This greatly expands the scope of macromolecular polar compounds that can be separated by ion-pair chromatography with the advantages of retention times being greatly reduced.
- Organic adds,
- Ion-pair chromatography,
- Surfactant,
- Mobile phase additives
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