M. Nakagawa et al., Separation of hydrophobic compounds by nonaqueous micellar electrokinetic chromatography using formamide solvent, BUNSEKI KAG, 48(2), 1999, pp. 239-244
In this study, some uncharged hydrophobic compounds, such as p-arylacetophe
nones, polycyclic aromatic hydrocarbons and steroids, were separated by mic
ellar electrokinetic chromatography (MEKC) using amide solvents containing
sodium n-dodecyl sulfide (SDS), di-(2-ethylhexyl) sodium sulfosuccinate (AO
T) or taurodexycholic acid sodium salt (STDC). The separation was shown to
be dependent on the types of amide solvent and the surfactant concentration
. Three different amides, formamide (FA), N-methyl-formamide (NMF) and N,N-
dimethylformamide (DMF) were used as solvent. A satisfactory result was obt
ained in formamide/SDS/NaH2PO4 medium. The effects of the amide solvent, su
rfactant and electrolyte on the separation were also studied.