Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1245596 | Talanta | 2008 | 5 Pages |
Abstract
A new method has been devised to allow the determination of small inorganic anions using isotachophoresis. This method makes use of indium(III) as a counter ion to manipulate the effective mobilities of inorganic anion species by means of complexation reactions. This new procedure successfully allowed the simultaneous determination of nitrate, chloride and sulphate to be realised on a capillary scale instrument and in a chip-based separation device. The electrolyte system developed to allow the separation to be achieved employed a 10Â mM bromide-based leading electrolyte containing 1.25Â mM indium(III) at pH 3.15 and a terminating electrolyte of cyanoacetic acid.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Jeff E. Prest, Peter R. Fielden,