Faculty of Sciences | Researches | Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o

Faculty of Sciences

Document Details

Document Type	:	Article In Journal
Document Title	:	Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o
Subject	:	Chemistry
Document Language	:	English
Abstract	:	A simple, fast, low cost and sensitive direct β-correction spectrophotometric assay of cyanide ions based on its reaction with the reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-one, abbreviated as HOTT in aqueous media of pH 7-10 is described. The electronic spectrum of the produced brown-red colored species showed well defined and sharp peak at λmax = 466 nm. The effective molar absorptivity for the produced cyano compound was 2.5 × 104 L mol-1 cm-1. Beer's law and Ringbom's plots were obeyed in the concentration range 0.05-2.0 and 0.30-1.5 μg mL-1 cyanide ions, respectively. The proposed method offers 16.0 and 50.3 μg L-1 lower limits of detection (LOD) and quantification (LOQ) of the cyanide ion, respectively. The analytical utility of the method for the analysis of cyanide ions in tap and drinking water samples was demonstrated and the results were compared successfully with the conventional cyanide ion selective electrode. The short time response and the detection by the naked eye make the method available for the detection and quantitative determination of cyanide in a variety of samples e.g. fresh and drinking water. Moreover, the structure of the produced colored species was determined with the aid of spectroscopic measurements (UV-Vis, IR, 1H and 13C NMR) and elemental analysis. © 2009 Elsevier B.V. All rights reserved.
ISSN	:	00032670
Journal Name	:	Analytica Chimica Acta
Volume	:	657
Issue Number	:	1
Publishing Year	:	2010 AH 2010 AD
Article Type	:	Article
Added Date	:	Tuesday, January 5, 2010

Researchers

Researcher Name (Arabic)	Researcher Name (English)	Researcher Type	Dr Grade	Email
A Hamza	Hamza, A	Researcher	Doctorate
عبدالعزيز صالح باشماخ	Bashammakh, A S	Researcher	Doctorate	abashammakh@kau.edu.sa
عبدالعزيز إبراهيم السباعي	Al-Sibaai, A A	Researcher	Doctorate	aalsibaai@yahoo.co.uk
M H Al-Saidi	Al-Saidi, M H	Researcher	Doctorate
محمد سرور الشهاوي	El-Shahawi, M S	Researcher	Doctorate	MALSAEED@kau.edu.sa

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File Name	Type	Description
24668.pdf	pdf	Abstract

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