Ulbrich HH, Andrade S, Janasi VA, Cardenete RS. QUALITY CONTROL OF ANALYTICAL ROUTINES FOR WHOLE-ROCK GEOCHEMISTRY: I: PARTICIPATION OF THE CHEMISTRY AND ICP-OES LABORATORY, INSTITUTE OF GEOSCIENCES, UNIVERSITY OF SÃO PAULO, IN THE INTERNATIONAL PROFICIENCY ROUNDS GEOPT 2, 3 AND 4. Geochim. Bras. [Internet]. 2011 Dec. 19 [cited 2024 Dec. 22];16(2). Available from: https://geobrasiliensis.emnuvens.com.br/geobrasiliensis/article/view/190