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Separate Determination of Aluminum and of Lithium, Sodium, and Potassium in Fire‐Clay and Silica Raw Materials and Refractories by Cation‐Exchange Chromatography
Author(s) -
OSBORN WALTON O.
Publication year - 1961
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1961.tb11652.x
Subject(s) - potassium , alkali metal , ion exchange , lithium (medication) , chemistry , raw material , ion chromatography , sodium , impurity , ion exchange resin , chromatography , mineralogy , inorganic chemistry , ion , organic chemistry , medicine , endocrinology
Plant control dictates a need for a rapid accurate method for the determination of alumina in silica and fire‐clay materials. The determination of the alkali oxide impurities is also important. Given a finely ground sample representative of the lot of material in question, the chemist has two basic problems. He needs (1) an acceptable method for complete solubilization of the sample and (2) a simple and accurate method for the determination of the constituent sought. Ion‐exchange analysis permits both to be carried out with ease and precision in regard to alumina. For the alkalis the complete solubilization of all types of samples presents some problems, but ion‐exchange analysis is applicable to the second requirement. Solubilized samples are passed down through an ion‐exchange column of Dowex‐50 cation‐exchange resin perfused with the proper strength of HC1. The fractions are collected and the separated constituents are determined. Data are presented showing the results of various procedures as compared with accepted values for National Bureau of Standards samples.