Journal ArticleDOI
Syntheses and spectrophotometric studies of 5-(2-pyridyl-azo)-2,4-diaminotoluene and its derivatives as analytical reagents
TLDR
In this paper, seven pyridylazo dyes containing the m -tolylenediamine group were synthesized and their analytical potential for the determination of cobalt was studied spectrophotometrically.About:
This article is published in Analytica Chimica Acta.The article was published on 1974-11-01. It has received 17 citations till now. The article focuses on the topics: Cobalt & Color reaction.read more
Citations
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Journal ArticleDOI
Spectrophotometric Determination of Trace Elements
Zygmunt Marczenko,Henry Freiser +1 more
TL;DR: Trace analysis has become the major problem of the day in analytical chemistry as discussed by the authors, and trace analysis is also an excellent analytical tool in the food industry and in environmental pollution and archeological research.
Journal ArticleDOI
Syntheses of azo dyes containing 4,5-diphenylimidazole and their evaluation as analytical reagents
TL;DR: In this paper, azo dyes containing the 4,5-diphenylimidazole group have been synthesized, and their potential for determinations of metals has been studied spectrophotometrically.
Journal ArticleDOI
2-(2-thiazolylazo)-4-methyl-5-(sulfomethylamino)benzoic acid as a reagent for the spectrophotometric determination of cobalt
TL;DR: In this article, some 2-(2-thiazolylazo)-4-methyl-5-(sulfomethylamino)benzoic acid derivatives are synthesized.
Journal ArticleDOI
Water-soluble pyridylazoaniline reagents for the spectrophotometric determination of metals
TL;DR: In this paper, three water-soluble pyridylazoaniline reagents were synthesized and their application as spectrophotometric reagents for iron(II), copper (II), nickel(II) and cobalt(III) was investigated.
Journal ArticleDOI
2-[2-(5-Bromopyridyl)azo]-5-dimethylaminophenol; a new sensitive reagent for cadmium
TL;DR: The 5-Br-DMPAP method is one of the most sensitive procedures available for the determination of cadmium; the molar absorptivity in a 3-methyl-1-butanol extract is 1.41·105 1 mol−1 cm−1 at 555 nm as mentioned in this paper.
References
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Journal ArticleDOI
Syntheses and spectrophotometric studies of azo dyes containing m-dimethylaminophenol as analytical reagents
TL;DR: In this article, 15 azo dyes containing the m-dimethylaminophenol group were synthesized, and their analytical potential for the determination of metals was studied spectrophotometrically.
Journal ArticleDOI
Pyridylazo-diaminobenzenes as reagents for cobalt
TL;DR: In this paper, six pyridylazo-diaminobenzenes have been synthesized and assessed as chromogens for the spectrophotometric determination of traces of cobalt.
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o-Amino heterocyclic azo-dyes as analytical reagents-II Spectrophotometric determination of cobalt with 3-[(5-chloro-2-pyridyl)azo]-2,6-diaminopyridine.
TL;DR: Cobalt(II) and 3-[(5-chloro-2-pyridyl)azo]-2,6-diaminopyridine (5-Cl-PADAPy) in slightly acid, neutral or alkaline media form a blue complex which is very stable even in the presence of mineral acids.
Journal ArticleDOI
New, high sensitive organic reagents for cobalt
Shozo Shibata,Masamichi Furukawa +1 more
TL;DR: In this article, the molar absorption coefficient of 5-(2-pyridylazo)-2, 4-diaminotoluene (3-Benzyloxy-PADAT), PADAT, 5-[(5-chloro-2-polycyclic) azo]-2, 5-(5-bromo-1-polygonal) 2-polymorphic azo], 5-(3, 5-dichloro-3-polyphenolic azo), 5-(4-diCl)-2-