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Spectrophotometric determination of cerium with methylthymol blue in the presence of oxalate and cyanide as masking agents

Journal Article:

Abstract

The spectrophotometric determination of cerium can be carried out by several methods, which involve either the formation of complexes of cerium(III) and cerium(IV) or the oxidation of suitable reagents by cerium(IV) and further measuring the intensity of the colour of the oxidised matter. The latter methods show a lack of selectivity and low sensitivity owing to the nature of the redox reaction. The methods that involve the formation of complexes have also been shown to have low selectivity and sensitivity. However, the most useful methods are those based on the complexes of cerium(III) with Xylenol Orange and Methylthymol Blue (MTB), but they are affected by many interferences. In this work the reaction of cerium(III) with MTB in the presence of oxalate and cyanide ions was studied at pH 10.2, which improves the sensitivity and the selectivity of the determination of cerium.
Authors:
Cabrera-Martin, A; Izquierdo-Hornillos, R; Quejido-Cabezas, A J; Peral-Fernandez, J L [1] 
  1. Universidad Complutense de Madrid (Spain). Facultad de Ciencias Quimicas
Publication Date:
Apr 01, 1983
Product Type:
Journal Article
Reference Number:
AIX-14-774761; EDB-83-186769
Resource Relation:
Journal Name: Analyst (London); (United Kingdom); Journal Volume: 108:1285
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CERIUM; SPECTROPHOTOMETRY; ABSORPTION SPECTRA; AQUEOUS SOLUTIONS; CERIUM COMPLEXES; CHEMICAL COMPOSITION; CYANIDES; INTERFERING ELEMENTS; METHYLTHYMOL BLUE; OXALATES; PH VALUE; QUANTITATIVE CHEMICAL ANALYSIS; REAGENTS; REDOX REACTIONS; SENSITIVITY; SPECIFICITY; XYLENOL ORANGE; CARBOXYLIC ACID SALTS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; COMPLEXES; DISPERSIONS; DYES; ELEMENTS; INDICATORS; METALS; MIXTURES; RARE EARTH COMPLEXES; RARE EARTHS; SOLUTIONS; SPECTRA; TRIPHENYLMETHANE DYES; 400104* - Spectral Procedures- (-1987)
OSTI ID:
5780621
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ANALA
Submitting Site:
HEDB
Size:
Pages: 534-537
Announcement Date:

Journal Article:

Citation Formats

Cabrera-Martin, A, Izquierdo-Hornillos, R, Quejido-Cabezas, A J, and Peral-Fernandez, J L. Spectrophotometric determination of cerium with methylthymol blue in the presence of oxalate and cyanide as masking agents. United Kingdom: N. p., 1983. Web.
Cabrera-Martin, A, Izquierdo-Hornillos, R, Quejido-Cabezas, A J, & Peral-Fernandez, J L. Spectrophotometric determination of cerium with methylthymol blue in the presence of oxalate and cyanide as masking agents. United Kingdom.
Cabrera-Martin, A, Izquierdo-Hornillos, R, Quejido-Cabezas, A J, and Peral-Fernandez, J L. 1983. "Spectrophotometric determination of cerium with methylthymol blue in the presence of oxalate and cyanide as masking agents." United Kingdom.
@misc{etde_5780621,
title = {Spectrophotometric determination of cerium with methylthymol blue in the presence of oxalate and cyanide as masking agents}
author = {Cabrera-Martin, A, Izquierdo-Hornillos, R, Quejido-Cabezas, A J, and Peral-Fernandez, J L}
abstractNote = {The spectrophotometric determination of cerium can be carried out by several methods, which involve either the formation of complexes of cerium(III) and cerium(IV) or the oxidation of suitable reagents by cerium(IV) and further measuring the intensity of the colour of the oxidised matter. The latter methods show a lack of selectivity and low sensitivity owing to the nature of the redox reaction. The methods that involve the formation of complexes have also been shown to have low selectivity and sensitivity. However, the most useful methods are those based on the complexes of cerium(III) with Xylenol Orange and Methylthymol Blue (MTB), but they are affected by many interferences. In this work the reaction of cerium(III) with MTB in the presence of oxalate and cyanide ions was studied at pH 10.2, which improves the sensitivity and the selectivity of the determination of cerium.}
journal = {Analyst (London); (United Kingdom)}
volume = {108:1285}
journal type = {AC}
place = {United Kingdom}
year = {1983}
month = {Apr}
}