Search
Now showing items 1-6 of 6
Laser-induced breakdown spectroscopy (LIBS), wavelength dispersive x-ray fluorescence (WDXRF) and chemometrics: possibilities for analytical applications in food analysis
(Universidade Federal de São Carlos, 2020-07-14)
This PhD thesis proposes evaluation of the possibilities and analytical applications of the laser-induced breakdown spectroscopy (LIBS) and wavelength dispersive x-ray fluorescence (WDXRF) techniques for the determination ...
Calibration strategies for elemental determination using direct solid analysis by x-ray spectroscopy and laser-induced breakdown spectroscopy
(Universidade Federal de São Carlos, 2020-07-30)
Direct analysis of solid samples using techniques such as wavelength dispersive X-ray fluorescence (WD XRF), X-ray absorption near-edge structure (XANES) spectroscopy and laser-induced breakdown spectroscopy (LIBS); have ...
Análise elementar de carnes: desenvolvimento de métodos analíticos e estratégias para técnicas com fonte de plasma
(Universidade Federal de São Carlos, 2020-10-13)
Meat is widely consumed around the world. Besides, this food has a significant influence on the Brazilian economy. Regarding the nutritional terms, it is considered as a source of essential elements (e.g., molybdenum, ...
Avaliação da disponibilidade de fósforo em fertilizantes encapsulados
(Universidade Federal de São Carlos, 2021-11-11)
The concentration of gradient diffusion was used as a passive sampling technique to mimic the physicochemical adsorption of P by plant roots. For this purpose, a binding gel was synthesized from agarose, polyacrylamide, ...
Monitoramento de um processo de lixiviação de cobre em placas de circuito impresso por meio da análise direta de sólidos e uso de Laser-Induced Breakdown Spectroscopy (LIBS)
(Universidade Federal de São Carlos, 2021-12-03)
This PhD thesis was developed at CTI Renato Archer, Campinas-SP and was based on a hydrometallurgical process, on an industrial scale, applied to the recovery of metals in discarded printed circuit boards (PCBs). The ...
Modificação de matrizes em análise espectroscópica por Raman e infravermelho médio
(Universidade Federal de São Carlos, 2021-12-16)
The spectroscopy methods of analysis, as Mid Infrared (MIR) and Raman spectroscopy, are based on the interaction of light and matter. These techniques present advantages, such as, non-destructive analysis, low cost and ...