CHEMICO-SPECTROGRAPHIC QUANTITATIVE DETERMINATION OF SMALL AMOUNTS OF MOLYBDENUM AND TUNGSTEN IN IGNEOUS ROCKS

Journal Article · Fri Jul 01 00:00:00 EDT 1960 · Zhur. Anal. Khim.

OSTI ID:4124447

Pavlenko, L I

A method is suggested for the quantitative determination of small concentrations of molybdenum and tungsten in various rocks. When the concentrations of these elements are greater than 10/sup -4/%, the analysis of rocks is carried out by the direct spectrographic method. The analysis of rocks containing less than 10/sup -4/% of molybdenum and tungsten is performed with the preliminary chemical enrichment by means of organic co-precipitants. The concentrates obtained are analyzed by the spectrographic method. The sensitivity of the chemico-spectrographic method developed for the determination of molybdenum and tungsten appears to be equal to 2 x 10/sup -6/% and 3 x 10/sup -5/ %, correspondingly. (auth)

• Research Organization: Vernadskii Inst. of Geochemistry and Analytical Chemistry, Academy of Sciences, Moscow
• NSA Number: NSA-15-000372
• OSTI ID: 4124447
• Journal Information: Zhur. Anal. Khim., Vol. Vol: 15; Other Information: Orig. Receipt Date: 31-DEC-61
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ENGINEERING AND EQUIPMENT
MOLYBDENUM
ORES
ORGANIC COMPOUNDS
SPECTROSCOPY
TUNGSTEN