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PHYSICOCHEMICAL STUDIES OF NICKEL AND COPPER COMPLEXES WITH TAR AND SIMULTANEOUS DETERMINATION OF THE METAL IONS IN MIXTURES BY DERIVATIVE SPECTROPHOTOMETRY

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Last updated: 03 Jan 2025

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Chemistry

Abstract

Nickel(II) and Copper(II) chelates of 4-(2̀–thiazolylazo)resorcinol (TAR) were reported. The dissociation constants of the ligand and the stability constants of the metal complexes were calculated pH-metrically and spectrophotometrically at 25 ◦C, in 50% (v/v) ethanol and 0.1 M ionic strength. The effects of an acid or a base on the visible absorption behaviour of the ligand and complexes has been investigated. Nickel and copper react with 4-(2̀–thiazolylazo)resorcinol (TAR) to form a binary complexes. The equilibria occurring in solution were established and the basic characteristics of the complexes formed were determined. The complexation reaction in the systems investigated were demonstrated and characterized using graphical logarithmic analysis of the absorbance versus pH graph. The composition of the formed complexes with the reagent have been determined. The molar absorptivity of the binary system is investigated. The binary systems obeyed beer's law up to 0.23 and 0.25 µg/ml for Ni2+ and Cu2+ respectively. A simple and highly sensitive procedure for spectrophotometric determination of Ni2+ and Cu2+ has been developed. A method for the simultaneous determination of nickel and copper in mixtures by first-derivative spectrophotometry is described. Zero-crossing measurement technique is found suitable for the simultaneous determination of the metal ions. The method has been applied to direct determination of copper and nickel in dome synthetic mixtures without any separation.

DOI

10.21608/absb.2011.7023

Keywords

Nickel(II) and Copper(II), TAR, Stability constants, POTENTIOMETRIC TITRATIONS, Spectrophotometry, simultaneous determination of copper and nickel

Authors

First Name

MAHMOUD

Last Name

MOUSTAFA

MiddleName

HASSAN

Affiliation

Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut, Egypt

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First Name

ABED ELHALEEM

Last Name

HESSEEN

MiddleName

M.

Affiliation

Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut, Egypt

Email

-

City

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Orcid

-

First Name

MOUSTAFA

Last Name

HASSAN

MiddleName

K.

Affiliation

Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt

Email

-

City

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Orcid

-

First Name

EHAB

Last Name

ABED ALLAHA

MiddleName

M.

Affiliation

Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut, Egypt

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City

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Orcid

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Volume

22

Article Issue

Issue 2-A

Related Issue

1329

Issue Date

2011-12-01

Receive Date

2011-07-03

Publish Date

2011-12-01

Page Start

141

Page End

152

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 22_Issue Issue 2-A_Pages 141-152.pdf

PDF . 347.3kB

Link

https://absb.journals.ekb.eg/article_7023.html

Detail API

https://absb.journals.ekb.eg/service?article_code=7023

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12

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Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

PHYSICOCHEMICAL STUDIES OF NICKEL AND COPPER COMPLEXES WITH TAR AND SIMULTANEOUS DETERMINATION OF THE METAL IONS IN MIXTURES BY DERIVATIVE SPECTROPHOTOMETRY

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Article

Created At

22 Jan 2023