ULBRICH, H. H.; ANDRADE, S.; JANASI, V. A.; CARDENETE, R. S. 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. Geochimica Brasiliensis, [S. l.], v. 16, n. 2, 2011. Disponível em: https://geobrasiliensis.emnuvens.com.br/geobrasiliensis/article/view/190. Acesso em: 22 dec. 2024.