A green potentiometric method for the determination of the iodine number of biodiesel

FUEL

卷:103

Article

Tubino, Matthieu¹  Aricetti, Juliana A.¹ 

[1] Univ Estadual Campinas, Inst Chem, BR-13083970 Campinas, SP, Brazil

关键词: Biodiesel;    Iodine number;    Iodine index;    Iodine value;    Potentiometry;   

DOI  :  10.1016/j.fuel.2012.10.011

来源: Elsevier

【 摘 要 】

In this paper a green potentiometric method is proposed for the determination of the iodine number of biodiesel. The solvent used is simply a water-ethanol mixture (1:1 v/v) and the reagent is iodine. The analytical procedure can be performed even without a laboratory hood as no iodine vapors are released if the method is done as indicated. The analytical results obtained with this procedure were compared with those from Wijs' method. In order to strictly compare instrumental procedures potentiometry was also applied to the Wijs' procedure. Also for comparison purposes a green visual method was applied. Statistical comparison of the four methods, through the paired Student's t test and the F test of Snedecor showed excellent agreement among all of them. (C) 2012 Elsevier Ltd. All rights reserved.

【 授权许可】

Free