Abstract
In this work, the development of flow system that is simple, precise and accurate for determining fluoride in mouthwash is described. The determination of fluoride was based on the on-line formation of a Fe(III)–salicylate complex, which is consumed in the presence of fluoride, generating the colourless hexafluoroferrate(III) complex ion, [FeF6]3-. The proposed procedure exhibits a linear concentration range of 8.0 × 10-5–1.2 × 10-3 mol L-1, a detection limit of 3.5 x 10-5 mol L-1, a higher sampling frequency of 44 h-1 and relative standard deviations below 0.2%. The interference of the red colour of the samples was removed using waste-seed specimens of Mabea fistulifera Mart. as a biosorbent material.
Keywords: Biosorbent material, flow injection analysis, fluoride, hexafluoroferrate(III) complex, mouthwash, spectrophotometry.
Current Pharmaceutical Analysis
Title:Determination of Fluoride in Mouthwash Using Flow-injection Analysis with Spectrophotometric Detection
Volume: 10 Issue: 3
Author(s): Benedito Roberto de Alvarenga, Wesley Lira Gabriel, Denílson Mendes de Oliveira, Cesar Reis, Reinaldo Francisco Teofilo, Vagner Bezerra dos Santos and Willian Toito Suarez
Affiliation:
Keywords: Biosorbent material, flow injection analysis, fluoride, hexafluoroferrate(III) complex, mouthwash, spectrophotometry.
Abstract: In this work, the development of flow system that is simple, precise and accurate for determining fluoride in mouthwash is described. The determination of fluoride was based on the on-line formation of a Fe(III)–salicylate complex, which is consumed in the presence of fluoride, generating the colourless hexafluoroferrate(III) complex ion, [FeF6]3-. The proposed procedure exhibits a linear concentration range of 8.0 × 10-5–1.2 × 10-3 mol L-1, a detection limit of 3.5 x 10-5 mol L-1, a higher sampling frequency of 44 h-1 and relative standard deviations below 0.2%. The interference of the red colour of the samples was removed using waste-seed specimens of Mabea fistulifera Mart. as a biosorbent material.
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Roberto de Alvarenga Benedito, Lira Gabriel Wesley, Mendes de Oliveira Denílson, Reis Cesar, Francisco Teofilo Reinaldo, Bezerra dos Santos Vagner and Toito Suarez Willian, Determination of Fluoride in Mouthwash Using Flow-injection Analysis with Spectrophotometric Detection, Current Pharmaceutical Analysis 2014; 10 (3) . https://dx.doi.org/10.2174/1573412910666140602232739
DOI https://dx.doi.org/10.2174/1573412910666140602232739 |
Print ISSN 1573-4129 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-676X |
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