FLUOROMETRIC DETERMINATION OF ZIRCONIUM IN THE PRESENCE OF TITANIUM BY QUERCETIN
A fluorometric-chromatographic method for determining zirconlum in the presence of titanium by quercetin is described. A zlrconium quercetinate solution gives a strong orange-yellow fluorescence on exposure to ultraviolet light which masks any fluorescence due to titanium quercetinate, so it was essential to use both chromatographic and fluorometric techniques in order to obtain the desired result. The first step consisted of the development of a chromatographic procedure: the pipetting of aliquots of zirconium solution onto Whatman No. 1 paper, followed by the spraying of the spots with a quercetln-ethyl alcohol solutlon and then by their drying and subsequent identification under a Pk-2 ultraviolet lamp. Next, a study was made of the behavior of Zr, Ti, Th, Fe/ sup 3+/, Al, and Be on paper with various solvents (mixtures of hydrochloric acid and ethyl alcohol, isopropyl alcohol and methyl-ethyl-ketone) the resulting chromatograms were examined afterwards in visible and ultraviolet light. The data showed that it was possible to differentiate between Zr, Ti, Fe, and Be on one chromatogram, and, therefore, to determlne zirconium in the presence of titanium and iron; a 4: l mixture of ethyl alcohol and hydrochloric acid was the most suitable solvent. In the last stage this solvent is used to effect a preliminary 8-hour separation of the above elements on chromatographic paper. After spraying with 0.0I% quercetin solution, the intensities of fluorescence of the spots under ultraviolet light were compared wlth those of standards containing known amounts of zirconium (0.l215 gamma ); the experimental error was plus or minus 0.2-0.4 gamma . It was concluded that this method glves completely reliable results. (OTS)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-008697
- OSTI ID:
- 4817212
- Journal Information:
- Vestnik Moskov. Univ., Ser. II, Vol. Vol: No. 3; Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ALCOHOLS
ALUMINUM
BERYLLIUM
BIOFLAVONOIDS
CHROMATOGRAPHY
ERRORS
ETHANOL
ETHYL RADICALS
FLAVONES
FLUORESCENCE
GLYCOSIDES
HETEROCYCLICS
HYDROCHLORIC ACID
IRON COMPOUNDS
ISOMERS
ISOPROPYL RADICALS
KETONES
METHYL RADICALS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PIGMENTS
PROPANOL
PROPYL RADICALS
QUANTITATIVE ANALYSIS
QUERCETIN
SPUTTERING
THORIUM
TITANIUM
ULTRAVIOLET RADIATION
VITAMINS
ZIRCONIUM
ZIRCONIUM COMPLEXES