Chromatographic techniques using liquid anion-exchangers : II. Strong monobasic acid systems☆

摘要: Paper and thin-layer chromatography—which generally give analogous results—have been carried out in HNO3, HBr, HI, HSCN HClO4 systems, using supports impregnated with high-molecular-weight amines substituted ammonium salts. Based on results previously obtained the HCl system, 5–7 liquid anion-exchangers were investigated, approx. 10 cations for each acid system. The HBr HI systems comparable to those found as an eluant. A more divergent picture is shown by HSCN, which eluant it preferable use paper chromatography time being. The HNO3 system shows fairly low adsorption most ions, but some interesting applications are outlined. Results HClO4, other hand, not particularly successful. of solutions containing free I2 Br2, respectively, has no unfavourable effects. The RF spectra show good agreement literature data solid anion-exchangers. Most curves may be explained assuming anion-exchange mechanism, support being important incidentally. The sequence reported appears reliable general guidance.