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Journal of Chemistry
Volume 2013, Article ID 147364, 5 pages
http://dx.doi.org/10.1155/2013/147364
Research Article

Determination of Thiocyanate by Kinetic Spectrophotometric Flow Injection Analysis

1Department of Chemistry, Majlesi Branch, Islamic Azad University, Isfahan, Iran
2Department of Chemistry, Shahreza Branch, Islamic Azad University, Isfahan, Iran

Received 16 December 2011; Revised 26 May 2012; Accepted 9 June 2012

Academic Editor: Bartolo Gabriele

Copyright © 2013 Mohsen Keyvanfard et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A simple and rapid flow injection spectrophotometric method has been developed for the determination of amount of thiocyanate in wastewaters and well water samples. It is based on the reaction of thiocyanate in hydrochloric acid with janus green and bromate. Reaction was monitored spectrophotometrically by measuring janus green absorbance at 𝜆 m a x = 5 5 4  nm. The calibration graph was linear over the range 0.02–1.0 μg mL−1 and the detection limit was 0.016 μg mL−1 ( 𝑠 / 𝑛 = 3 ). The throughput was 25 samples per hour.