Determinação do teor de ésteres graxos em biodiesel metílico de soja por cromatografia gasosa utilizando oleato de etila como padrão interno

Abstract

FATTY ESTER CONTENT DETERMINATION IN SOYBEAN METHYL BIODIESEL BY GAS CHROMATOGRAPHY USING ETHYL OLEATE AS INTERNAL STANDARD.A method for ester content determination in soybean methyl biodiesel was studied, using ethyl oleate as internal standard. A biodiesel sample was analyzed and had its purity estimated as 92.8%. Method accuracy was evaluated by comparison with the result obtained via EN14103, with a relative difference of 0.1%. Repetitivity and intermediate precision were estimated as 2 and 1.5%, respectively.