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This work presents the use of the Relative Hydrogen Index (RHI) parameter obtained from the single–pulse Nuclear Magnetic Resonance (NMR) Free Induction Decay (FID) experiment as an efficient, fast and unique procedure for the determination of important physical and chemical properties of petroleum fractions. Four Brazilian crude oils were distillated according to ASTM D2892 to obtain a total of 42...
Crude oils produced from different reservoirs in the world have very different chemical compositions and physicochemical properties. Naphthenic acids and sulphur content can affect the properties and impact the processing and refining of oils. Traditional methods used to determine the total acid number (TAN) and sulphur content are laborious, they use toxic organic solvents, complex analytical procedures...
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