Counterion affinity orders in aqueous micellar solutions of sodium decyl phosphate and sodium dodecyl sulfate determined by changes in sodium-23 NMR relaxation …

LS Romsted, CO Yoon

Index: Romsted, Laurence S.; Yoon, Choon-Ock Journal of the American Chemical Society, 1993 , vol. 115, # 3 p. 989 - 994

Full Text: HTML

Citation Number: 29

Abstract

Abstract: Changes in quadrupole relaxation rates of 23Na on addition of the CI-salts of Na+, K+, Rb+, Cs', TMA+, and TEA+ ions were used to determine the relative affinities of these cations for micelles composed of the decyl phosphate monoanion, DPH-(pH 5.3), the decyl phosphate dianion, DP2-(pH 12.6), and their 1: l mixture (pH 7.8) at 35 OC. Similar experiments were run in sodium dodecyl sulfate (SDS) micelles at 35 and 60 OC for ...