Increased selectivity in ion-exchange planar electrochromatography. Electrochromatographic separation on cerium(IV) tungstate papers of amino acids from some synthetic mixtures and pharmaceutical products

• Autorzy: Misra A. K. , Pachauree S.
• Języki publikacji: EN

Abstrakty

EN

The electrochromatographic behaviour of amino acids has been studied on cerium(IV) tungstate-impregnated papers. Five background electrolytes of different pH were investigated at a fixed potential and for a fixed time. On the basis of the compounds' differential migration, which depends on the ion-exchange properties of the cerium(IV) tungstate and the nature of the complexes formed with the electrolytes, some useful binary and ternary separations of amino acids have been achieved. The separation of some acidic amino acids from the others present, that of DL-ß-phenyl-alanine from other phenyl (and other) amino acids, and the separation of DL-isoleucine from DL-norleucine are of special interest. L-Lysine and DL-methionine from seven pharmaceutical products have been separated and quantitatively analysed. The utility of this simple, inexpensive, and accurate method has been illustrated by the analysis of amino acids in pharma-ceutical products.

• Wydawca: University of Silesia in Katowice ; Akademiai Kiado
• Czasopismo: Acta Chromatographica
• Rocznik: 2002
• Tom: No. 12
• Strony: 189--200
• Opis fizyczny: Bibliogr. 26 poz., tab.

Twórcy

autor

Misra A. K.

• Analytical and Environment Research Laboratory, Chemistry Department, NMSN Dass (PG) College, Budaun-243 601 (UP) India

autor

Pachauree S.

• Analytical and Environment Research Laboratory, Chemistry Department, NMSN Dass (PG) College, Budaun-243 601 (UP) India

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