Spectrophotometric determination of trace amounts of iodide-ions in form of ionic associate with brilliant green using electrochemical oxidation

Drozd, Anatoliy; Tishakova, Tatyana

doi:10.2478/s11532-011-0020-z

Journal

Open Chemistry

2011 | 9 | 3 | 432-436

Article title

Spectrophotometric determination of trace amounts of iodide-ions in form of ionic associate with brilliant green using electrochemical oxidation

Authors

Anatoliy Drozd , Tatyana Tishakova

Content

Full texts:

http://www.degruyter.com/view/j/chem.2011.9.issue-3/s11532-011-0020-z/s11532-011-0020-z.pdf [remote]

Title variants

Languages of publication

Abstracts

A combined method involving electrochemical oxidation of iodide to iodate at a platinum electrode followed by extraction in CCl4 of ionic associates of iodine-iodide complexes with brilliant green, formed in excess of iodide, was developed for the spectrophotometric quantification of iodide. The slope of the calibration curve yields a molar extinction coefficient of ɛ = 3·105 L mol−1cm−1. This method can be used for the quantification of iodide in the concentration range of 3·10−7 − 3·10−6 mol L−1 with a detection limit of 5·10−8 mol L−1. The interfering effect of other ions on the determination of the iodide concentration was also investigated. The method was successfully applied for the determination of iodide in real samples of NaCl and spring water. Relative standard deviation is 1–2%.

Keywords

Iodide Electrochemical oxidation Brilliant green Spectrophotometric determination

Publisher

De Gruyter Open

Journal

Open Chemistry

Year

2011

Volume

Issue

Pages

432-436

Physical description

Dates

published

1 - 6 - 2011

online

22 - 3 - 2011

Contributors

author

Anatoliy Drozd

drozd@univer.kharkov.ua

Kharkiv V.N. Karazin National University

author

Tatyana Tishakova

Kharkiv V.N. Karazin National University

References

[1] V. Lucia, A.M. Campos, Marine Chemistry 57, 107 (1997) http://dx.doi.org/10.1016/S0304-4203(96)00093-X[Crossref]
[2] Y. Zhu, J. Guan, L. Cao, J. Hao, Talanta 80, 1234 (2010) http://dx.doi.org/10.1016/j.talanta.2009.09.015[Crossref]
[3] T.K. Malongo, S. Patris, P. Macours, F. Cotton, J. Nsangu, J.-M. Kauffmann, Talanta 76, 540 (2008) http://dx.doi.org/10.1016/j.talanta.2008.03.053[Crossref]
[4] B. Rebary, P. Paul, P.K. Ghosh, Food Chemistry 123, 529(2010) http://dx.doi.org/10.1016/j.foodchem.2010.04.046[Crossref]
[5] O.M. Trokhimenko, V.N. Zaitsev, J. Anal. Chem. 59(5), 551 (2004) http://dx.doi.org/10.1023/B:JANC.0000026244.43536.13[Crossref]
[6] Z.O. Tesfaldet, J.F. van Staden, R.I. Stefan, Talanta 64, 1213 (2004) http://dx.doi.org/10.1016/j.talanta.2004.04.038[Crossref]
[7] Z. Xie, J. Zhao, Talanta 63, 339 (2004) http://dx.doi.org/10.1016/j.talanta.2003.10.050[Crossref]
[8] S.B. Niazi, M. Mozammil, Analytica Chimica Acta 115, 252(1991)
[9] A.V. Drozd, V.M. Belik, Uzhgorod University Bulletin Chemical Series 9, 102 (2003) (in Ukrainian)
[10] A.V. Drozd, T.S. Tishakova, Kharkov University Bulletin. Chemical Series. 895(18), 101 (2010) (in Russian)

Document Type

Publication order reference

Identifiers

DOI

10.2478/s11532-011-0020-z

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-011-0020-z