Collaborative test of determination of iodine value in fish oils. 2. Carbon tetrachloride or cyclohexane/acetic acid as solvents

Autor:	Anthony P. Bimbo, D. E. Walters, Eric L. Miller, Stuart M. Barlow, Snorri Thorisson
Rok vydání:	1997
Předmět:	Reproducibility Chromatography Cyclohexane General Chemical Engineering Organic Chemistry Repeatability Fish oil Solvent chemistry.chemical_compound Acetic acid Iodine value chemistry Carbon tetrachloride Organic chemistry
Zdroj:	Journal of the American Oil Chemists' Society. 74:1085-1088
ISSN:	0003-021X
Popis:	Nine laboratories participated in a collaborative test to determine the iodine value (IV) of eight samples of fish oil (four with IV 150) with either carbon tetrachloride (AOCS Official Method Cd 1–25) or cyclohexane/acetic acid (AOCS Recommended Practice Cd 1d-92) as solvent and 1 h of reaction time. Laboratories received coded duplicate samples (hidden duplicates) and carried out duplicate determinations on each oil by each method (open duplicates). Replacing carbon tetrachloride with cyclohexane/acetic acid resulted in similar mean values for both low- and high-IV oils and similar estimates of repeatability and reproducibility. The repeatability standard deviation (s r ), based on hidden duplicates, with carbon tetrachloride and cyclohexane/acetic acid were 1.71 and 1.55, respectively. The corresponding reproducibility standard deviations were 1.81 and 1.98.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0658f038987eb269f547866d6edc17c0 https://doi.org/10.1007/s11746-997-0029-9 Zobrazit plný text záznamu Full text from SpringerLink Plný text