ISSN:
1432-1130
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract An amperometric detector based on the chemical modification of Nafion and indium (III) hexacyanoferrate (II, III) thin film (Nafion/In-CN-Fe) onto a glassy carbon (GC) electrode, was first successfully used for the determination of electroinactive cations (Li+, Na+, K+, Rb+, Cs+, NH4 +) in single column ion chromatography (IC). A set of well-defined peaks of electroinactive cations was obtained. The detection limits of the cations are 8.9 × 10–6 mol/L for Li+, 2.3 × 10–6 mol/L for Na+, 5.2 × 10–6 mol/L for K+, 4.8 × 10–6 mol/L for Rb+, 4.0 ׶10–6 mol/L for Cs+ and 5.3 × 10–6 mol/L for NH4 + at a single-to-noise ratio of 3. The proposed method was quick, sensitive and simple. The cations in rainwater and mineral water were successfully analyzed by this method.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002160000341
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