Jacira Teixeira Castro

TL;DR: In this paper, an overview of modern techniques of sample preparation for food analysis employing atomic and inorganic mass spectrometric techniques, such as flame atomic absorption, chemical vapor generation atomic absorption and atomic fluorescence spectrometry, graphite furnace atomic absorption spectrometer, inductively coupled plasma optical emission spectrometrization, and induction coupled plasma mass spectroscopy, is presented.

TL;DR: In this paper, the development of new sorbents and their application in preconcentration methods for determination of trace elements is a subject of great interest, and several analytical methods involving the preparation and use of new solid phase materials are discussed.

TL;DR: Cobalt, copper and manganese have been chosen as test elements as they were found to be significant in previous investigations and there was no significant difference between the values obtained with SS-ET AAS and ICP OES for Mn and Cu.

TL;DR: It was demonstrated that the digestion procedures are critically dependent on reactions occurring in liquid and gas phase and that the formation of NO and its conversion to NO2 by O2 exerts a major effect in the oxidation of organic matter.

TL;DR: In this article, multivariate optimization was applied for the development of an ultrasound-assisted multielemental extraction procedure for analysis of bean samples by inductively coupled plasma optical emission spectrometry.