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Validation of analysis of urinary fluoride by ion selective electrode method
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2014, v.27 no.6, pp.333-338
https://doi.org/10.5806/AST.2014.27.5.333
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(2014). Validation of analysis of urinary fluoride by ion selective electrode method. Analytical Science and Technology, 27(6), 333-338, https://doi.org/10.5806/AST.2014.27.5.333
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Abstract
A simple and sensitive analytical method for fluoride in urine by ion selective electrode (ISE) methodwas presented. Traditional buffer for fluoride determination using ISE is acetate-based one. Researchers havepointed out some drawbacks of the buffer for fluoride ISE analysis, and some other buffers including citrateammoniumbuffer and MES buffer have been studied for accurate determination of fluoride in urine here. Thesebuffers provided promising results in environmental field, and this author focused on overcoming the interferenceof co-existing aluminium. The results show that MES-CyDTA buffer gave the best recovery with accuracy of95-97.5% and precision of 1.9-7.9% for reference sample of 1.8-7.8 mg/L fluoride in urine, with smaller amountof samples and shorter analysis time compared with the traditional method which used acetate buffer. The methodwas applied to field samples, and which showed urinary of 0.98±0.38 mg/g creatinine for workers in electriccable manufacturing factory (n=15) and 0.59±0.30 mg/g creatinine for non-exposed workers (n=12).
- keywords
- urinary fluoride, biological monitoring, ion selective electrode, MES-CyDTA buffer
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