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Online comprehensive two-dimensional ion chromatography capillary electrophoresis


Ranjbar, L and Gaudry, AJ and Breadmore, MC and Shellie, RA, Online comprehensive two-dimensional ion chromatography capillary electrophoresis, Analytical Chemistry, 87, (17) pp. 8673-8678. ISSN 0003-2700 (2015) [Refereed Article]

Copyright Statement

2015 American Chemical Society

DOI: doi:10.1021/acs.analchem.5b01130


A comprehensively coupled online two-dimensional ion chromatography-capillary electrophoresis (IC CE) system for quantitative analysis of inorganic anions and organic acids in water is introduced. The system employs an in-house built sequential injection-capillary electrophoresis instrument and a nonfocusing modulation interface comprising a tee-piece and a six-port two-position injection valve that allows comprehensive sampling of the IC effluent. High field strength (+2 kV/cm) enables rapid second-dimension separations in which each peak eluted from the first-dimension separation column is analyzed at least three times in the second dimension. The IC CE approach has been successfully used to resolve a suite of haloacetic acids, dalapon, and common inorganic anions. Two-dimensional peak capacity for IC CE was 498 with a peak production rate of 9 peaks/min. Linear calibration curves were obtained for all analytes from 5 to 225 ng/mL (except dibromoacetic acid (10225 ng/mL) and tribromoacetic acid (25225 ng/mL)). The developed approach was used to analyze a spiked tap water sample, with good measured recoveries (69119%).

Item Details

Item Type:Refereed Article
Keywords:comprehensive LC CE, electrophoresis
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Separation science
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Ranjbar, L (Ms Leila Ranjbar Shourabi)
UTAS Author:Gaudry, AJ (Mr Adam Gaudry)
UTAS Author:Breadmore, MC (Professor Michael Breadmore)
UTAS Author:Shellie, RA (Associate Professor Robert Shellie)
ID Code:106969
Year Published:2015
Funding Support:Australian Research Council (FT130100101)
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:2016-02-28
Last Modified:2018-03-16

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