Analytical study of non-ionic surfactants used in enhanced oil recovery : Optimization of analytical conditions in reversed-phase partition chromatography
✍ Scribed by P.L. Desbene; B. Desmazieres; J.J. Basselier; A. Desbene-Monvernay
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 666 KB
- Volume
- 461
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
✦ Synopsis
The analysis of non-ionic polyoxyethylenic surfactants used in enhanced oil recovery was investigated by reversed-phase partition chromatography with UV detection. A systematic comparative survey of commercially available non-polar stationary phases (Crs, Cs, Cg, C4, Cz, phenyl, cyano and diol) is presented. Various solvents miscible with water (methanol, acetonitrile, tetrahydrofuran, dioxane, acetone and 2-propanol) were tested as mobile phases. A good evaluation of the distribution versus the number of ethylene oxide groups in these surfactants was obtained with alkyl-bonded silica (C 18 and Cs) by isocratic elution with tetrahydrofuran or acetonitrile as solvent additives. Peaks were identified by the simultaneous elution of pure standards.