DEVELOPMENT OF FLOW INJECTION METHOD FOR ONLINE DETERMINATION OF THIOCYANATE BASED ON OXIDATION BY PERMANGANATE

https://doi.org/10.22146/ijc.21455

Hermin Sulistyarti(1*), Spas D. Kolev(2), Stephanie Lim(3)

(1) Department of Chemistry, Brawijaya University, Jl. Veteran 1 Malang
(2) Department of Chemistry, University of Melbourne
(3) Department of Chemistry, University of Melbourne
(*) Corresponding Author

Abstract


The importance of developing method for thiocyanate becomes obvious, because thiocyanate can inhibit iodine uptake of thyroid gland leading to mumps disease. In this work, thiocyanate is oxidized by permanganate in the acid donor stream to cyanide, which is directly converted to hydrogen cyanide. Then, hydrogen cyanide diffuses through a Teflon membrane into acceptor stream containing nickel(II) in ammoniacal buffer to form tetracyanonickelate(II) which is detected spectrophotometrically at 267 nm. Analytical figures of merit were linear up to 50 mg L-1 for thiocyanate, with RSD of 1.34%, and detection limit of 0.07 mg L-1, respectively. Interfering anions were eliminated under stoichiometric amount of permanganate and sample throughput was 20 h-1. The method was validated for determining thiocyanate samples from synthetic and gold process waters with satisfactory results.


Keywords


Thiocyanate; flow injection; permanganate; spectrophotometry

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References

[1] Dorea, J.G., 2004, J. Am. Coll. Nutr., 23, 2, 97–101.

[2] Kage, S., Nagata, T., and Kudo, K., 1996, J. Chromatogr. B, 696, 1, 27–32.

[3] Themelis, D.G., and Tzanavaras, P.D., 2002, Anal. Chim. Acta, 452, 2, 295–302.

[4] Imanari, T., Tanabe, S., and Toida, T., 1982, Chem. Pharm. Bull., 30, 10, 3800–3801.

[5] American Public Health Association (APHA), 2005, Standard Method for the Examination of Water and Wastewater, 21st ed., Washington D.C., 4–51.

[6] Chinaka, S., Takayama, N., Michigami, Y., and Ueda, K., 1998, J. Chromatogr. B, 713, 353–359.

[7] Buddha, D.P., and Michael, S.L., 2006, J. Anal. Toxicol., 30, 8, 511–515.

[8] Tamošiünas, V., Padarauskas, A., and Pranaityté, B., 2006, Chemija, 17, 2–3, 21–24.

[9] Sulistyarti, H., Cardwell, T.J., and Kolev, S.D., 1997, Anal. Chim. Acta, 357, 1, 103–109.

[10] Haque, M.R., and Bradbury, J.H., 1999, Clinical Chemistry, 45, 9, 1459–1464.

[11] Vogel, A.I., 1989, Vogel’s Quantitative Chemical Analysis, 5th ed., John Wiley and Sons Inc., 605 Third Avenue, New York NY



DOI: https://doi.org/10.22146/ijc.21455

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