STUDIES ON THE MICRODETERMINATION OF METALS BY EXTRACTING THE INORGANIC COMPOUNDS WITH ORGANIC SOLVENTS. III. MICRODETERMINATION OF MOLYBDENUM

Journal Article · Sat Aug 01 04:00:00 EDT 1959 · Sci. Repts. Research Insts., Tohoku Univ., Ser. A

OSTI ID:4070273

Goto, H; Ikeda, S

The molybdenum ion reduced by stannous chloride or hydrazine sulfate forms a complex compound with thiocyanate, which can be extracted by organic solvent from aqueous solution. The maximum absorption peaks of this compound were found at 335 and 468 m mu when stannous chloride was used as reducing agent and at 320 and 460 m mu when hydrazine sulfate was used. The absorbancies were proportional to the molybdenum content at these wavelengths and adoptable for the microdetermination of molybdenum. Organic solvents suitable for the extraction of molybdenum compound are acetate esters, alcohols, and mixed solvent of esters or alcohols with carbon tetrachloride or chloroform. Optimum acid concentrations for the extraction and spectrophotometnic determination of molybdenum are 0.9 to l.ON of hydrochloric acid in stannous chlonide reduction and 0.8 to 1.2N of sulfunic acid in hydrazine sulfate reduction method. About 1 to 10 gamma of molybdenum can be deterninned by this method. (auth)

• Research Organization: Research Inst. for Iron, Steel and Other Metals, Japan
• NSA Number: NSA-15-012879
• OSTI ID: 4070273
• Journal Information: Sci. Repts. Research Insts., Tohoku Univ., Ser. A, Journal Name: Sci. Repts. Research Insts., Tohoku Univ., Ser. A Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALCOHOLS
CARBON TETRACHLORIDE
CHEMISTRY
CHLOROFORM
COMPLEXES
CYANIDES
ESTERS
HYDRAZINE
HYDROFLUORIC ACID
IONS
MOLYBDENUM
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOTOMETRY
QUANTITATIVE ANALYSIS
REDUCTION
SOLUTIONS
SOLVENT EXTRACTION
SPECTRA
SULFATES
SULFURIC ACID
THIOCYANIDES
TIN CHLORIDES
TRACE AMOUNTS
WATER