A rapid and simple method for the determination of iodine values using derivative Fourier transform infrared measurements

A rapid method fur determining the iodine value, IV, of vegetable oils was developed. The method is based on using derivative Fourier transform infrar ed measurements. The infrared derivative spectrum of pure vegetable oils wa s measured between 4000-400 cm(-1) and the heights of the derivative spectr um for functional group band maxima were determined. Pure vegetable oils as samples were used throughout this study. The method was used for determina tion of iodine value of 12 edible vegetable oils as well as castor and lins eed oils. Oils with IV ranging from 10 to 190 were tested and found to give satisfactory values. Results were obtained with good precision and accurac y, typically exhibiting 5% relative standard deviation. (C) 2001 Elsevier S cience B.V. All rights reserved.