100. Inorganic chromatography on cellulose. Part II. The separation and detection of metals and acid radicals on strips of absorbent paper

Radioisotopic Study of Uranium Separations

“…Pollard and coworkers (17) likewise suggest that one of the main factors in paper chromatography of inorganic compounds is the distribution of the compounds between the organic solvent and water. That the first two factors are the major ones that cause the separation of uranium(VI) when uranyl nitrate is eluted on filter paper with 2-methyltetrahydrofuran that contains aqueous nitric acid is indicated by the study of extractants for uranium and by the work of Burstall and coworkers (5). They suggested that those inorganic salts which have a high solubility in organic solvents tend to be extracted in the solvent front and to form bands narrower than the original spot.…”

Separation of Nickel and Cobalt by Paper Chromatography

“…T h e R, values of Xi and Co have been cletermined for 1,-tributyl phosphate (TBP) adjusted with concentrated hydrochloric acid of various concentrations. T B P is as suitable for the separation of Ni and Co by paper chromatography as other solvents mentionecl in the literature (1,2,3). Before use the reagent was shaken with nitric acicl to remove mono-and di-butyl phosphate (4), then distilled and adjusted with HCI of different molarities.…”

“…the racemic acid (1). The hydrochloride of the methyl betaine which was recrystallizecl by adding hot ethyl acetate to a boiling solution of the coinpouncl in absolute ethanol had m.p.…”

Use of a Four-Cell Conductivity Bridge as a Continuous Detector for Ion Exchange Chromatography.

“…in solution have been separated in chromatographic columns (2,6,10), but little work has been done in the use of a chromatographic column in connection with a suitable conductometric detecting device.…”