Measurements of Binary Diffusion Coefficient and Partition Ratio at Infinite Dilution for Linoleic Acid and Arachidonic Acid in Supercritical Carbon Dioxide

The binary diffusion coefficient D 12 and partition ratio k were measured for two ω6 group compounds, linoleic acid and arachidonic acid, at infinite dilution in carbon dioxide at temperatures from 308.15 K to 343.15 K and pressures from 9 MPa to 30 MPa by a tracer response technique with a poly(eth...

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Bibliographic Details
Published in:Journal of chemical and engineering data 2003-05, Vol.48 (3), p.684-688
Main Authors: Funazukuri, Toshitaka, Kong, Chang Yi, Kikuchi, Takahiro, Kagei, Seiichiro
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemistry
Exact sciences and technology
Fat industries
Food industries
Fundamental and applied biological sciences. Psychology
General and physical chemistry
Solution properties
Solutions
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Summary:The binary diffusion coefficient D 12 and partition ratio k were measured for two ω6 group compounds, linoleic acid and arachidonic acid, at infinite dilution in carbon dioxide at temperatures from 308.15 K to 343.15 K and pressures from 9 MPa to 30 MPa by a tracer response technique with a poly(ethylene glycol)-coated capillary column. The measured D 12 values were well represented by a correlation of D 12/T versus CO2 viscosity and by the Schmidt number correlation for each solute, and the k values were well represented as a function of temperature and CO2 density. Partial molar volumes were also obtained from the k values.
ISSN:0021-9568
1520-5134
DOI:10.1021/je020205i