Geovani C. Brandao

TL;DR: The present paper describes fundamentals, advantages and limitations of the Box-Behnken design for the optimization of analytical methods, and establishes also a comparison between this design and composite central, three-level full factorial and Doehlert designs.

TL;DR: In this article, the state-of-the-art of slurry sampling as an approach for the minimization of sample preparation prior to the determination of metals and metalloids in complex matrices by spectroanalytical techniques is discussed.

TL;DR: A method was established to simultaneously determine cadmium, iron and tin in canned-food samples using high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS) and the accuracy was confirmed by analyzing a certified reference material of apple leaves (NIST 1515).

TL;DR: A procedure is proposed for the direct determination of manganese and iron in wine employing fast sequential flame atomic absorption spectrometry and the reference element technique to correct for matrix effects and demonstrated that cobalt and indium at a concentration of 2 and 10mgL(-1) were efficient for quantification of mangansese andIron.

TL;DR: In this paper, an ultrasound-assisted single-drop microextraction procedure for the determination of cadmium in vegetable oils using high-resolution continuum source electrothermal atomic absorption spectrometry was presented.