Lithium oxide concentrations greater than 0·01 per cent. w/w in silicate rocks are determined directly on solutions prepared after dissolution of the samples in hydrofluoric, nitric and perchloric acids by atomic-absorption spectrophotometry. There are no interferences and the method can be readily incorporated into schemes of rapid silicate analysis. Precision and accuracy are good.
M. Stone and S. E. Chesher, Analyst, 1969, 94, 1063 DOI: 10.1039/AN9699401063
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