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APLICACAO DA ABSORCAO ATOMICA A ANALISE QUIMICA DE ROCHAS ET MINERIOS = APPLICATION DE L'ABSORPTION ATOMIQUE A L'ANALYSE CHIMIQUE DES ROCHES ET DES MINERAISSEABRA E BARROS J; TAVARES MJ.1979; COMUN. SERV. GEOL. PORT.; ISSN 0037-2730; PRT; DA. 1979; VOL. 64; PP. 215-234; BIBL. 11 REF.; 8 TAB. ; TABL./ILL.Conference Paper

DETERMINACAO DE ELEMENTOS EM MATERIAIS GEOLOGICOS COM ELECTRODOS SELECTIVOS A IOES = DETERMINATION DES ELEMENTS DANS LA MATIERE GEOLOGIQUE AVEC DES ELECTRODES SELECTIVES A IONSTAVARES MJ; SEABRA E BARROS J.1979; COMUN. SERV. GEOL. PORT.; ISSN 0037-2730; PRT; DA. 1979; VOL. 64; PP. 177-191; BIBL. 1 P.; 5 TAB. ; TABL./BLOC DIAGR./ILL.Conference Paper

DETERMINATION OF URANIUM AND IMPURITIES IN PORTUGUESE YELLOW-OAKES.DE JESUS TAVARES M; SEABRA E BARROS J; MATOS F et al.1977; TALANTA; G.B.; DA. 1977; VOL. 24; NO 5; PP. 326-328; BIBL. 17 REF.Article

Combination of neutron activation, atomic absorption spectroscopy and conventional methods in the elemental analysis of silicate rocks = Combinaison des méthodes d'activation neutronique, de spectroscopie d'absorption atomique et conventionnelles pour l'analyse élémentaire de roches silicatéesGOUVEIA, M. A; SEABRA E BARROS, J; JESUS TAVARES, M et al.Journal of radioanalytical and nuclear chemistry. 1986, Vol 97, Num 2, pp 265-270, issn 0236-5731Article

Validation of the uncertainty evaluation for the determination of metals in solid samples by atomic spectrometryBETTENCOURT DA SILVA, R. J. N; CAMOES, M. F. G. F. C; SEABRA E BARROS, J et al.Accreditation and quality assurance. 1998, Vol 3, Num 4, pp 155-160, issn 0949-1775Conference Paper

Validation and quality control schemes based on the expression of results with uncertaintyBETTENCOURT DA SILVA, R. J. N; CAMOES, M. F. G. F. C; SEABRA E BARROS, J et al.Analytica chimica acta. 1999, Vol 393, Num 1-3, pp 167-175, issn 0003-2670Conference Paper

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