Collaborative test of determination of iodine value in fish oils. 1. Reaction time and carbon tetrachloride or cyclohexane as solvents
- 1 September 1997
- journal article
- Published by Wiley in Journal of the American Oil Chemists' Society
- Vol. 74 (9) , 1077-1083
Abstract
Twenty‐two laboratories participated in a collaborative test to determine the iodine value (IV) of eight samples of fish oil (four with IV150) with either carbon tetrachloride (AOCS Official Method Cd 1–25) or cyclohexane (AOCS Recommended Practice Cd 1b‐87) as solvent and either 1 or 2 h of reaction time. Laboratories received coded duplicate samples (hidden duplicates) and carried out duplicate determinations on each oil by each solvent‐time combination (open duplicates). Replacing carbon tetrachloride with cyclohexane resulted in a lower IV (PPsr), based on hidden duplicates, for 1‐h reaction time with carbon tetrachloride and cyclohexane were 2.17 and 3.35, respectively. The corresponding reproducibility standard deviations were 2.73 and 4.53.Keywords
This publication has 2 references indexed in Scilit:
- Collaborative test of determination of iodine value in fish oils. 2. Carbon tetrachloride or cyclohexane/acetic acid as solventsJournal of the American Oil Chemists' Society, 1997
- MethodologyJournal of the American Oil Chemists' Society, 1988