Determination of trace amounts of barium in silicate rocks and minerals by ion-exchange Chromatography and atomic-absorption spectrophotometry.
Trace amounts of barium are determined in the standard silicate rocks and minerals, W-1, AGV-1, BCR-1, DTS-1, GSP-1, G-2 of the U.S. Geological Survey and BR, GA, GH, GR, UB-N, DR-N, BX-N, DT-N, VS-N, FK-N, GS-N of the Centre de Recherche Petrographique et Geochimique de Nancy and the Association Nationale de la Recherche Technique. After an ion-exchange separation, the analyses are carried out by atomic-absorption spectrophotometry. The separation is performed to eliminate interferences due to matrix effects.
Frache
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Istituto di Chimica Generale e Inorganica, Universitá di Genova, Genoa, Italy.
Mazzucotelli
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