- P-ISSN 1225-0163
- E-ISSN 2288-8985
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).
1. J. S. Park, ‘Practical guide of health examination of workers’, Vol. 3, p 473, Occupational safety and research Institute, Incheon, 2013.
2. Y. J. Kim, S. H. Park and K. S. Choi, J. Korean Ophthalmol. Soc., 54(11), 1663-1668 (2013).
3. H. K. Pak, ‘Case report on accident of hydrofluoric acid leakage’, Korea occupational safety and health agency, Incheon, 2013.
4. Y.-Y. Kang, Y.-J. Kim, W.-I. Kim, C.-W. Yoon, J.-M. Yeon, S.-K. Shin and G.-J. Oh, Anal. Sci. Technol., 27(3), 167-171 (2014).
5. S. lehtinen, ‘Biological monitoring of chemical exposure in the workplace’, Vol. 2, Geneva, World Health Organization, 1996.
6. J. Eckstrand, C. J. Spak and M. Ehrnebo, Acta Pharmacol. Toxicol., 50, 321-325 (1982).
7. M. Rietjens, Anal. Chim. Acta, 368, 265-273 (1998).
8. M. Fouskaki, S. Sotiropoulou, M. Koci and N. A. Chaniotakis, Anal. Chim. Acta, 478(1), 77-84 (2003).
9. M. Trojanowicz, P. W. Alexander and D. B. Hibbert, Anal. Chim. Acta, 366(1-3), 23-33 (1998).
10. K. Itai and H. Tsunoda, Clin. Chim. Acta, 308(1), 163-171 (2001).
11. J.-S. Yang, ‘Biological monitoring of workers exposed to organic solvent mixture or inorganic chemical: Proficiency test for samples of biological monitoring’, Occupational safety and research Institute, Incheon, 1995.
12. American Conference of Governmental Industrial Hygienists (ACGIH), ‘Threshold Limit Values for Chemical Substances and Physical Agents & Biological Exposure Indices with 7th Edition Documentation’, Cincinnati, 2013.
13. Instruction for exposure and analysis (2010.3.11), Finland, http://www.ttl.fi/fi/asiantuntijapalvelut/tyoymparisto/kemikaalit_ja_polyt/biomonitorointi/naytteenotto/Documents/UF.pdf, 2010.
14. K. H. Schaller and J. Angerer, ‘Analysis of hazardous substances in biological materials: Methods for biological monitoring’, Vol. 2. New York: VCH Publishers (1988).