الانتقال الى المحتوى الأساسي

جامعة الملك عبدالعزيز

KING ABDULAZIZ UNIVERSITY

كلية العلوم

تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
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
 
الموضوع : كيمياء 
لغة الوثيقة : الانجليزية 
المستخلص : 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. 
ردمد : 00032670 
اسم الدورية : Analytica Chimica Acta 
المجلد : 657 
العدد : 1 
سنة النشر : 2010 هـ
2010 م
 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Tuesday, January 5, 2010 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
A HamzaHamza, A باحثدكتوراه 
عبدالعزيز صالح باشماخBashammakh, A Sباحثدكتوراهabashammakh@kau.edu.sa
عبدالعزيز إبراهيم السباعيAl-Sibaai, A Aباحثدكتوراهaalsibaai@yahoo.co.uk
M H Al-SaidiAl-Saidi, M Hباحثدكتوراه 
محمد سرور الشهاويEl-Shahawi, M SباحثدكتوراهMALSAEED@kau.edu.sa

الملفات

اسم الملفالنوعالوصف
 24668.pdf pdfAbstract

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