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Determination of phosphorus in biodiesel using FIA with spectrophotometric detection

By Liliana Fátima Bezerra Lira, Daniele C.M.B. dos Santos, Mauro A.B. Guida, Luiz Stragevitch, Maria das Graças A. Korn, Maria Fernanda Pimentel and Ana Paula Silveira Paim

Abstract

AbstractIn this work, a method for the determination of phosphorus in biodiesel (B100) using flow injection analysis with spectrophotometric detection (FIA-SD) is described. Samples were digested using an acid mixture in a heating block. The phosphorus concentrations obtained by the (FIA-SD) method were similar to those obtained by the official method. Recovery tests show results between 98.6% and 101.0% for biodiesel produced from sunflower and between 102.1% and 113.5% for biodiesel produced from castor and soybeans. The limits of detection (LOD) and quantification (LOQ) obtained using the FIA system were 0.14mgL−1 and 0.46mgL−1, respectively

Publisher: Elsevier Ltd.
Year: 2011
DOI identifier: 10.1016/j.fuel.2011.06.022
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