2012

PESSOA, H. M. ; Hauser-Davis, R. A. ; CAMPOS, R.C. ; CASTRO, E. V. R. ; CARNEIRO, M. T. W. D. ; Brandão, G. P. . Determination of Ca, Mg, Sr and Ba in crude oil samples by atomic absorption spectrometry. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, v. 27, p. 1568-1573, 2012.

PESSOA, HELEN M. ; LYRA, FERNANDA H. ; CASTRO, EUSTÁQUIO VINICIUS R. DE ; CAMPOS, REINALDO C. DE ; CARNEIRO, MARIA TEREZA W. D. ; BRANDÃO, GEISAMANDA P. . Comparison of different pre-treatment procedures for the determination of chromium in crude oil samples by GF AAS. JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, v. 23, p. 1421-1428, 2012.