Automated indirect fluoride determination by ICP-OES using discontinuousflow analysis

An automated method for the indirect determination of fluoride by inductively coupled plasma atomic emission spectrometry using discontinuous-flow analysis has been developed. A modified flow injection analysis system was used for sample preparation. The method is based on the determination of exces...

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Bibliographic Details
Published inToxicological and environmental chemistry Vol. 91; no. 7; p. 1217
Main Authors Kovács, Mátée, Magarini, Riccardo, Halmos, Pál
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis Ltd 01.10.2009
Subjects
Chemical elements
Filters
Fluorides
Groundwater
Spectrum analysis
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Summary:An automated method for the indirect determination of fluoride by inductively coupled plasma atomic emission spectrometry using discontinuous-flow analysis has been developed. A modified flow injection analysis system was used for sample preparation. The method is based on the determination of excess cerium(III) ion after precipitation of CeF... Separation of the precipitate is performed online on a syringe membrane filter that is cleaned each analysis cycle by 1M nitric acid, ensuring a long life-time for the filter. As a result of the short reaction time, a detection limit of 9.5 mgL... was obtained. The precision (RSD) of the proposed method is 1.02% at fluoride concentration of 28 mgL... The applicability of the technique for groundwater monitoring of fluoride-contaminated area is demonstrated. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0277-2248
DOI:10.1080/02772240802631907