Otoniel D de Sant'Ana

Determination of arsenic in petroleum refinery streams by electrothermal atomic absorption spectrometry after multivariate optimization based on Doehlert design

Ricardo J. Cassella, Otoniel D de Sant'Ana, Ricardo Erthal Santelli · Spectrochimica Acta Part B Atomic Spectroscopy · 2002 · 50 citations

Natural Sciences, Chemical Engineering, Petroleum Engineering +15

Precipitation–dissolution system for silver preconcentration and determination by flow injection flame atomic absorption spectrometry

Otoniel D de Sant'Ana · Talanta · 2002 · 32 citations

Natural Sciences, Chemical Engineering, Chemistry +12

Solid phase extraction of Cu(II) as diethyldithiocarbamate (DDTC) complex by polyurethane foam

Otoniel D de Sant'Ana, Luciene S. Jesuı́no, Ricardo J. Cassella et al. · Journal of the Brazilian Chemical Society · 2003 · 30 citations · Full text

Engineering, Chemical Engineering, Chemistry +15

Determination of lead by electrothermal atomic absorption spectrometry employing a novel sampling strategy of polyurethane foam impregnated with thiazolylazo-p-cresol (TAC)

Otoniel D de Sant'Ana, Luciene S. Jesuı́no, Ricardo J. Cassella et al. · Journal of the Brazilian Chemical Society · 2004 · 26 citations · Full text

Natural Sciences, Chemistry, Toxicology +13

Selenium determination by electrothermal atomic absorption spectrometry in petroleum refinery aqueous streams containing volatile organic compounds

Ricardo J. Cassella, Otoniel D de Sant'Ana, Alessandra T. Rangel et al. · Microchemical Journal · 2002 · 21 citations

Natural Sciences, Chemistry, Petroleum Engineering +12