Search research

SPECTROPHOTOMETRIC RESEARCH INTO MULTI-LIGAND COMPLEXES FORMED BY ZIRCONIUM (IV) WITH STILBAZOLE AND CETYLPYRIDINIUM CHLORIDE

I.A. Ahmadov, A.M. Pashajanov

This study deals spectrophotometric analysis of the multi-ligand complex of zirconium (IV) with stilbazole and cetylpyridinium chloride. Dichloroethane was selected as the extragent and acetonitrile as the dispersant solution. Optimal conditions for the complex formation were identified. The results of the extraction process and complex…

DOI: 10.32737/2221-8688-2021-4-241-249

SPECTROPHOTOMETRIC DETERMINATION OF DOXORUBICIN HYDROCHLORIDE USING CHARGE TRANSFER COMPLEXES REACTION

Tabarak A. Abdulwahd, Omar A. Sheej Ahmad

A new, simple, sensitive, and rapid spectrophotometric method has been developed for the determination of doxorubicin hydrochloride (DOX) via charge-transfer complex formation with o-chloranil in its pure form and pharmaceutical preparations (injection). The method is based on the formation of a stable 2:1 (Reagent: Drug)…

Keywords: Spectrophotometric analysis, o-chloranil, doxorubicin, charge-transfer complex formation

DOI: 10.65382/2221-8688-2026-4-660-669

USING BENZIDINE REAGENT FOR SPECTROPHOTOMETRIC DETERMINATION OF MESALAZINE BY OXIDATIVE COUPLING REACTION

R.D.M. Saeed, M.S. Al-Enizzi, N.M. Yahya

Abstract: A spectroscopic method has been developed to determine the mesalazine in both its pure form and pharmaceutical preparations. The procedure is characterized by its simplicity, rapidity, and high sensitivity. It relies on the oxidative coupling reaction between mesalazine and benzidine in the presence of…

Keywords: Oxidative Coupling Reactions, Mesalazine, Benzidine, Spectroscopic determination.

DOI: 10.65382/2221-8688-2026-3-440-450

EXTRACTION-SPECTROPHOTOMETRIC STUDY OF THE SYSTEM NICKEL(II) – HALOGENASEMERCAPTOPHENOL -AMINOPHENOL – WATER – CHLOROFORM

A.Z. Zalov, Z.G. Asgarova, Z.Z. Yakhshieva, U.B. Abasguliyeva, Sh.A. Mamedova , P.F. Нuseynova

Reaction of nickel with halogenazomercaptophenol (HAMP) {1-(5-fluoro-2-pyridylazo)-2-hydroxy- 4-mercaptophenol, 1-(5-chloro-2-pyridylazo)-2-hydroxy-4-mercaptophenol} in the presence aminophenols (AP): 2-(N,N-dimethylaminomethyl)-4-methylphenol, 2-(N,N-dimethylaminomethyl)-4-ethylphenol studied by the Extraction-Photometric method. A single extraction with chloroform yields 97.1–98.9% nickel (II) in the form of a mixed-ligand complex (MLC). The optimal acidity range, at which the…

DOI: 10.32737/2221-8688-2024-4-436-446

RESEARCH INTO SORPTION CONDITIONS OF 2-(4-SULFOPHENYLAZO)-1-AMINO-8-HYDROXYNAPHTHALENE-3,6-DISULFONIC ACID BY COMMERCIAL ANION EXCHANGER AB-17

М.А. Babuev, A.B. Isaev, Z.A. Alilova, S.I. Suleymanov

To obtain a new modified sorbent, the conditions for maximum sorption of the chelate reagent 2- (4-sulfophenylazo)-1-amino-8-hydroxynaphthalene-3,6-disulfonic acid (SPAAHS) by a strongly basic AB-17 anion exchanger were selected. The conditions for modifying the anion exchanger were studied by spectrophotometric analysis on a Specord 210 Plus…

DOI: 10.32737/2221-8688-2022-1-7-17