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: http://www.chem.msu.ru/eng/publ/chrom5.html
Дата изменения: Unknown Дата индексирования: Thu Feb 27 22:40:56 2014 Кодировка: |
A.I. Elefterov, M.G. Kolpachnikova, P.N. Nesterenko, O.A. Shpigun
ABSTRACT. The chromatographic behaviour of alkali, alkaline earth, and some transition metals on the glutamic acid-bonded silica stationary phase was investigated using dilute solutions of perchloric acid as eluent. The effect of different classes of organic modifiers as well as the influence of temperature on retention of cations were studied. Sorption heats for cations under different conditions were calculated. These investigations allowed the chromatographic separation conditions, under which either complex forming or ion-exchange mechanisms prevail, to be determined.