REVERSED-PHASE CHROMATOGRAPHY OF ALKALI METALS AND ALKALINE EARTHS ON PAPER TREATED WITH DI(2-ETHYLHEXYL) ORTHOPHOSPHORIC ACID IN ACETATE MEDIUM

Journal Article · Wed Jan 01 04:00:00 EST 1964 · J. Chromatog.

DOI:https://doi.org/10.1016/S0021-9673(01)95095-2· OSTI ID:4076604

Cerrai, E; Ghersini, G

The chromatographic behavior of alkali and alkaline earth metals on paper treated with di(2-ethylhexyl) phosphoric acid (HDEHP) was investigated, using acetic acid as the eluent in the range of concentrations from 2 to 0.01 M. The quantity (1/RF = 1) was related to the hydrogen ion concentration and to the effective HDEHP concentration on the paper. A behavior similar to that shown in liquid--liquid extraction with HDEHP solutions was found provided that the acetic acid concentration was kept low. The peculiar behavior found with concentrated acetic acid is discussed. No direct proportionality was obtained between the HDEHP molarity in the solution used to treat the paper and the effective concentration of HDEHP on the paper, which acts during elution. The instability of HDEHP on paper with very concentrated acetic acid was also investigated. Some chromatographic separations of alkali and alkaline earth metals were carried out, and others were suggested. (auth)

• Research Organization: C.I.S.E., Segrate, Italy
• NSA Number: NSA-18-016141
• OSTI ID: 4076604
• Journal Information: J. Chromatog., Journal Name: J. Chromatog. Vol. Vol: 13
• Country of Publication: Country unknown/Code not available
• Language: English

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