TY - JOUR
T1 - Mixed Solvents in gas-liquid chromatography. Activity coefficients for chloroform, dichloromethane and ehtyl acetate in squalane-dinonyl phthalate mixtures at 303°K
AU - J. Ashworth, Anthony
AU - J. Price, Gareth
PY - 1985/1/1
Y1 - 1985/1/1
N2 - Activity and partition coefficients for the polar solutes chloroform, dichloromethane and ethyl acetate at infinite dilution in squalane-dinonyl phthalate mixtures have been determined at 303°K by the extrpolation of measurements made using a vacuum microbalance technique. The results are compared with predictions using the Purnell-Andrade and Tiley-Perry relationships. The effect of solvent-solid support ratios on the determined activity coefficients and the adsorption phenomena involved have been examined. Whereas 20% by weight of solvent yields true bulk liquid activity coefficients for chlorform and dichloromethane, a 40% loading is necessary for ethyl acetate.
AB - Activity and partition coefficients for the polar solutes chloroform, dichloromethane and ethyl acetate at infinite dilution in squalane-dinonyl phthalate mixtures have been determined at 303°K by the extrpolation of measurements made using a vacuum microbalance technique. The results are compared with predictions using the Purnell-Andrade and Tiley-Perry relationships. The effect of solvent-solid support ratios on the determined activity coefficients and the adsorption phenomena involved have been examined. Whereas 20% by weight of solvent yields true bulk liquid activity coefficients for chlorform and dichloromethane, a 40% loading is necessary for ethyl acetate.
UR - http://www.scopus.com/inward/record.url?scp=0013481299&partnerID=8YFLogxK
U2 - 10.1016/S0021-9673(01)81322-4
DO - 10.1016/S0021-9673(01)81322-4
M3 - Article
AN - SCOPUS:0013481299
SN - 0021-9673
VL - 324
SP - 231
EP - 241
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - C
ER -