Author/Authors :
Lira، نويسنده , , Liliana Fلtima Bezerra and dos Santos، نويسنده , , Daniele C.M.B. and Guida، نويسنده , , Mauro A.B. and Stragevitch، نويسنده , , Luiz and Korn، نويسنده , , Maria das Graças A. and Pimentel، نويسنده , , Maria Fernanda and Paim، نويسنده , , Ana Paula Silveira and Stragevitch، نويسنده ,
Abstract :
In 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 0.14 mg L−1 and 0.46 mg L−1, respectively.
Keywords :
biodiesel , Phosphorus , FIA , ICP OES , digestion
