A multifunctional dual membrane electrodialytic eluent generator for capillary ion chromatography.
作者： Bingcheng Yang , Feifang Zhang , Xinmiao Liang , Purnendu K. Dasgupta
DOI: 10.1016/J.CHROMA.2009.01.025
关键词: Chemistry 、 Column chromatography 、 Elution 、 Ion exchange 、 Conductometry 、 Ion chromatography 、 Chromatography 、 Capillary action 、 Membrane 、 Electrodialysis 、 Analytical chemistry
摘要: A multifunctional electrodialytic generator (EDG) for capillary ion chromatography (CIC) is described. The same device can generate acidic, basic or saline eluents. Two oppositely charged exchange beads are used to fabricate the EDG; dual exchanger configuration ensures production of gas-free eluent, obviating need a gas removal with single EDG's. ability EDG produce different eluents governed solely by choice respective feed solutions; this presently demonstrated generation diverse such as Na(2)CO(3)/NaHCO(3). CH(3)SO(3)H, and KNO(3). implemented simply in commercial cross fitting has been tested up pressures 2000 psi. Under typical operating conditions, zero current concentration (open circuit penetration, OCP) negligible. generated eluent linearly increases applied slope that essentially Faradaic. permits both isocratic gradient operation good reproducibility, analysis anions using HCO(3)-/CO(3)(2-) EDG. (c) 2009 Elsevier B.V. All rights reserved.
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