Format

Send to

Choose Destination
Talanta. 2016 Oct 1;159:143-147. doi: 10.1016/j.talanta.2016.06.015. Epub 2016 Jun 7.

Fabrication and evaluation of an electrodialytic carbonate eluent generator for ion chromatography.

Author information

1
School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
2
School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. Electronic address: bcyang@ecust.edu.cn.

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.

KEYWORDS:

Electrodialytic eluent generator; Ion chromatography; Potassium bicarbonate; Potassium carbonate; pH modifier

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center