Determination of lithium oxide in silicate rocks by atomic-absorption spectrophotometry
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.