par Vosters, Marcel ;Deutsch, Marie Sarah
Référence Earth and planetary science letters, 2, 5, page (449-452)
Publication Publié, 1967-08
Article révisé par les pairs
Résumé : Rubidium at a concentration of between ∼0.5 and ∼3 ppm has been determined in rocks and minerals by atomic absorption spectrophotometry. By comparison with external standards a precision of better than 3% has been attained without recourse to chemical separation of rubidium. Lanthanum and potassium buffers were added to the standards and samples to compensate for interferences. Very favourable agreement was obtained between the concentration of rubidium as determined by atomic absorption when compared to measurements made by stable isotope dilution analysis. © 1967.