Buscar
Itens para a visualização no momento 1-2 of 2
Determinação do grau API e teor de enxofre e nitrogênio em petróleo usando ATR-FTIR e métodos quimiométricos
(Universidade Federal de Santa Maria, 2019-11-25)
Parameters such as API gravity and sulfur and nitrogen concentrations are important to determine crude oil quality. API, S and N grade determinations were evaluated by ASTM D-7042, ASTM D-5453 and ASTM D-4629 methods, ...
Método gravimétrico de Payzant em amostras de cimento asfáltico: uma investigação analítica para reduzir o consumo de reagentes e a geração de resíduos
(Universidade Federal de Santa Maria, 2019-11-25)
This work presents alternative methodologies to fractionation of petroleum asphalt cement (CAP) in sulfur species (saturated/aromatic compounds, thiophenic compounds and sulfide compounds) proposed by Payzant (1989). The ...