scholarly journals The use of some heterocyclic azo dyes in polarographic analysis of metal ions

2018 ◽  
Vol 59 (1) ◽  
pp. 172 ◽  
Author(s):  
L. Dubenska ◽  
S. Pysarevska ◽  
S. Tvorynska ◽  
M. Mykytyuk ◽  
O. Drymalyk
Keyword(s):  
Metal Ions ◽  
Azo Dyes ◽  
Polarographic Analysis

Effects of metal ions on the interaction between polyethylenimine and azo dyes carrying hydroxyl groups

1985 ◽  
Vol 23 (1) ◽  
pp. 255-259 ◽  
Author(s):  
Toru Takagishi ◽  
Kiyoaki Yoshikawa ◽  
Sadatsugu Okuda ◽  
Nobuhiko Kuroki ◽  
Hiroshi Kozuka
Keyword(s):  
Metal Ions ◽  
Azo Dyes ◽  
Hydroxyl Groups

scholarly journals Spectral Analysis of Azo Derivatives for their Colorimetric Response to some Special Metal Ions

2021 ◽  
Vol 11 (3) ◽  
pp. 3909-3916
Keyword(s):  
Spectral Analysis ◽  
Metal Ions ◽  
Aqueous Medium ◽  
Spectral Data ◽  
Azo Dyes ◽  
Color Change ◽  
Oh Groups ◽  
Sensing Properties ◽  
Colorimetric Response ◽  
Azo Derivatives

The present study describes an efficient chromogenic probing ability possessed by an azo linkage that could sense Ni, Fe, and Co in the semi-aqueous medium. The chromogenic sensing properties of the four azo dyes were studied towards Fe(III), Co(II), and Ni(II) ions, the IR and UV-VIS spectral data revealed that the nitrogen and oxygen atoms of –N=N-, C=O and –OH groups participated in bonding with the metal ions. Also, an obvious change in the color of the azo dyes A and B solution from yellow to dark brown in the case of Fe+2 metal ions and Co+2 and Ni+2 colorless solutions appeared yellowish, while the addition of other metal ions did not cause any color change. These results imply that the two azo dyes are viable, portable chromogenic chemosensors for the detection of Fe (III), Co (II), and Ni (II) ions in various biological and environmental fields.

scholarly journals Reactions of o,o′-Dihydroxy Azo Dyes with the Third Group M(III) Ions: A Spectroscopic and Electrochemical Study

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Solomiya Pysarevska ◽  
Liliya Dubenska ◽  
Ivan Spanik ◽  
Jaroslav Kovalyshyn ◽  
Sofia Tvorynska
Keyword(s):  
Metal Ions ◽  
Azo Dyes ◽  
Reduction Peak ◽  
Ir Spectrometry ◽  
Eriochrome Black T ◽  
The Third ◽  
Linear Behavior ◽  
Hydroxy Groups ◽  
Voltammetric Methods ◽  
Second Peak

The reactions of some metal ions of the third group (M(III)) with azo dyes were studied. Attention was focused on azo dyes with two hydroxy groups inortho-positions to azo group: eriochrome red B (ERB), eriochrome black T (EBT), eriochrome blue SE (EBSE), calcon (Calc), and kalces (KLC). The chelation is responsible for interaction of these dyes with Al(III), Sc(III), rare earth elements (REE) ions, Ga(III), and In(III). The complexes were studied using vis- and IR-spectrometry. One irreversible peak (P1) of complexes reduction was observed on voltammograms for all studied metal ions. The second peak P2 was observed only for Ga complexes with all investigated azo dyes. Based on the study, the possible mechanism of complexes reduction was proposed. Linear behavior has been found between the reduction peak currents of a set of metal complexes and the concentration of the respective metal cations. This can be used for metal ions determination by voltammetric methods.

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