RADIOMETRIC STUDY ON THE SUITABILITY OF CINCHONIN AS PRECIPITATION REAGENT FOR TUNGSTEN AND MOLYBDENUM

Journal Article · Mon Jan 01 00:00:00 EST 1962 · Zeitschrift fuer Analytische Chemie (West Germany) Changed to Fresnius Z. Anal. Chem.

OSTI ID:4645110

Merz, E

The precipitation of W and Mo with cinchonin was studied using P/sup 32/ , Mp/sup 99/, and W/sup 185/. The effects of the acid, acid concentration, solution volume, and precipitation time on the quantitative precipitation of the metals were determined. W was precipitated only from HCl and HNO/sub 3/, and no quantitative precipitation of Mo was obtained. No variation was found in the completeness of the precipitation using HCl concentrations of 1 to 6N, but precipitation is prevented or strongly inhibited in very strong solutions. The quantitative precipitation of W is very strongly dependent on the solution volume, but there is no sharp time dependence. A study of the effectiveness of cinchonin and tannin as combined precipitation agents showed no advantage over the use of cinchonin alone, except in the removal of interferring elements in the precipitation. (J.S.R.)

• Research Organization: Kernforschungsanlage, Julich, Ger.
• NSA Number: NSA-17-039073
• OSTI ID: 4645110
• Report Number(s): Jul-93-RC; 0372-7920
• Journal Information: Zeitschrift fuer Analytische Chemie (West Germany) Changed to Fresnius Z. Anal. Chem., Vol. Vol: 191; Other Information: Jul-93-RC. Orig. Receipt Date: 31-DEC-63
• Country of Publication: Germany
• Language: German

Related Subjects

CHEMISTRY
ACIDITY
ACIDS
ALKALOIDS
CHEMICALS
CINCHONINE
CONCENTRATION
HETEROCYCLICS
HYDROCHLORIC ACID
INTERFERING ELEMENTS
MOLYBDENUM
MOLYBDENUM 99
MOLYBDENUM COMPOUNDS
NITRIC ACID
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
PHOSPHORUS 32
PRECIPITATION
QUANTITY RATIO
RADIATION DETECTORS
RADIOCHEMISTRY
SEPARATION PROCESSES
SOLUTIONS
TANNIC ACID
TESTING
TRACER TECHNIQUES
TUNGSTEN
TUNGSTEN 185
VOLUME