Volume 3, Issue 1, March 2018, Page: 28-31
Fluoride Determination in Pickling Solution of Stainless Steel by Ion Selective Electrode
Yusuf Yildiz, Analytical Chemistry Research Department, Complete Analysis Laboratories, New Jersey, USA
Angela Jan, Analytical Chemistry Department, Whitehouse Labs/AMRI, New Jersey, USA
Sapan Patel, Whiting School of Engineering, John Hopkins University, Baltimore, USA
Received: Feb. 23, 2018;       Accepted: Mar. 11, 2018;       Published: Apr. 9, 2018
DOI: 10.11648/j.wjac.20180301.14      View  824      Downloads  36
Abstract
The Fluoride Ion Selective Electrode is an ion-selective sensor and will quickly and accurately measure fluoride ion activity rather than concentration in aqueous solutions. Fluoride ion activity depends on the solution total ionic strength and pH, and on fluoride complexing species. Adding an appropriate buffer provides a nearly uniform ionic strength background, adjust pH, and breaks up complexes so that, in effect, the electrode measures concentration. Pickling removes a thin surface layer from the stainless, using an acid solution, which is usually a hydrofluoric acid (HF) and nitric acid (HNO3), also called mixed acid. In this study, fluoride ion strength has been measured of pickling waste water from stainless steel by ion selective electrode. The results met the specification.
Keywords
Pickling Stainless Steel Solution, Fluoride, Ion Selective Electrode
To cite this article
Yusuf Yildiz, Angela Jan, Sapan Patel, Fluoride Determination in Pickling Solution of Stainless Steel by Ion Selective Electrode, World Journal of Applied Chemistry. Vol. 3, No. 1, 2018, pp. 28-31. doi: 10.11648/j.wjac.20180301.14
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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