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Elimination of metal interference in the determination of fluoride ion by non-suppressor type ion chromatography


Citation

Tokunaga, Shuzo and Uchiumi, Akira and Haron, Md. Jelas and Tatsumoto, Hideki (1996) Elimination of metal interference in the determination of fluoride ion by non-suppressor type ion chromatography. International Journal of Environmental Analytical Chemistry, 62 (3). pp. 191-205. ISSN 0306-7319; ESSN: 1029-0397

Abstract / Synopsis

A simple method has been developed to eliminate metal interferences in the ion-chromatographic determination of fluoride ion in aqueous solutions. Negative interferences become appreciable on 0.2-mM F at 0.01 to 0.02 mM of Al(III), Ce(IV), La(III), Y(III), Ce(III) and Pb(II); and at 0.25 mM of Ca(II). The interference from Cd(II), Co(II), Fe(II) and Ni(II) is insignificant at ≤ 5.0-mM metal for 5.0-mM F-. By alkalifying F- solutions at pH 12.3, the metal interference can be eliminated up to the concentrations of 0.25-mM Al(III), La(III) and Y(III); 1.0-mM Ce(IV); 2.5-mM Ce(III); and 5.0-mM Pb(II), Cd(II), Co(II), Fe(II) and Ni(II). The Ca(II) interference cannot be eliminated. The pretreatment enables determination of 0.2- to 5.0-mM F- in presence of 0.25-mM Al(III) or La(III) with coefficient-of-variations of 1.99 to 6.20%.


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Additional Metadata

Item Type: Article
Divisions: Universiti Pertanian Malaysia
DOI Number: https://doi.org/10.1080/03067319608028133
Publisher: Taylor & Francis
Keywords: Alkali pretreatment; Fluoride analysis; Ion chromatography; Metal interference
Depositing User: Nabilah Mustapa
Date Deposited: 13 Apr 2016 11:36
Last Modified: 13 Apr 2016 11:36
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/03067319608028133
URI: http://psasir.upm.edu.my/id/eprint/42348
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