title: Fabrication and evaluation of an electrodialytic carbonate eluent generator for ion chromatography.
abstract: An electrodialytic potassium carbonate eluent generator and its associated potassium bicarbonate eluent generator have been fabricated for ion chromatography (IC). The device can withstand high backpressure up to ∼32MPa and no observable leakage under such pressure is found during 2h. In the range of 0-13.7mM, potassium carbonate concentration can be generated linearly with the applied current with a slope that is essentially Faradaic. At least 10mM potassium carbonate can be online changed into 10mM potassium bicarbonate via a potassium bicarbonate eluent generator, which offers an easy way to manipulate the separation selectivity. When coupled with IC system, the device demonstrated good reproducibility indicated by less than 0.52% of the relative standard deviation of the retention times.
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Guobin
authors.initials: G
authors.lastname: Shen
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Lu
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Feifei
authors.initials: F
authors.lastname: Chen
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Feifang
authors.initials: F
authors.lastname: Zhang
authors.affiliation: School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. Electronic address: bcyang@ecust.edu.cn.
authors.forename: Bingcheng
authors.initials: B
authors.lastname: Yang
keywords: Electrodialytic eluent generator; Ion chromatography; Potassium bicarbonate; Potassium carbonate; pH modifier