Abstract

A method for the determination of Al₂O₃, Fe₂O₃, TiO₂, MnO, CaO, and MgO by atomic absorption is described. A 0.5 to 1.0 g sample is put into solution by treatment with HF, followed by fusion of the HF residue with K₂S₂O₇ and solution of the fused material with HCl. Determination of the various elements is then made using an acetylene-nitrous oxide flame and a premix type burner. The method was developed to eliminate the necessity of changing flame parameters because of the refractory and nonrefractory elements involved. National Bureau of Standards 1-A, G-1, W-1, and U. S. Geological Survey standards BRC-1 and PCC-1 were analyzed by the methods described herein and the results obtained agree within 0.1% or less of the listed values. Standard deviations and coefficients of variation were also calculated for all elements determined on each sample and found to be within acceptable limits.

Spectrochemical Determination of the Major Constituents of Minerals and Rocks

Aslak Kvalheim
J. Opt. Soc. Am. 37(7) 585-592 (1947)

Atomic Absorption Spectroscopy with High Temperature Flames

J. B. Willis
Appl. Opt. 7(7) 1295-1304 (1968)

The Quantitative Spectrographic Analysis of the Rare Earth Elements* III. Determination of Major Constituents in Complex Mixtures

Velmer A. Fassel
J. Opt. Soc. Am. 39(2) 187-193 (1949)

Nitrous Oxide Supported Flames for Atomic Absorption Spectroscopy

L. R. P. Butler and Anne Fulton
Appl. Opt. 7(10) 2131-2137 (1968)

Erratum: Spectrochemical Determination of the Major Constituents of Minerals and Rocks

Aslak Kvalheim
J. Opt. Soc. Am. 38(5) 479-479 (1948)