MICELLAR SOLUBILIZATION OF UNSATURATED HYDROCARBON CONCENTRATIONS AS EVALUATED BY SEMIEQUILIBRIUM DIALYSIS

Prior research on surfactant solubilization has emphasized steady-stat e conditions in the presence of excess hydrocarbon for single-componen t systems. These conditions do not accurately emulate the natural subs urface environment. Evaluation of solubilization potential for unsatur ated hydrocarbon concentrations revealed influences of micellar core a nd palisade layer effects on hydrocarbons of varying polarity, Naphtha ne, naphthalene, and l-naphthol were utilized to probe for core and pa lisade effects. Surfactants evaluated were sodium dodecyl benzenesulfo nate and C16-alkyl diphenyl oxide disulfonate. Use of semiequilibrium dialysis cells provided quantitative solubilization information for un saturated hydrocarbon concentrations. Palisade and core solubilization effects were observed as follows: as the more fraction increased, K-m increased for naphthane, decreased for naphthol, and remained relativ ely constant for naphthalene.