AUTOMATIC SPECTROPHOTOMETRIC TITRATION OF FLUORIDE, SULFATE, URANIUM, AND THORIUM

Journal Article · Fri Oct 31 23:00:00 EST 1958 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

DOI:https://doi.org/10.1021/ac60143a015· OSTI ID:4286278

Menis, O; Manning, D L; Ball, R G

An automatic, spectrophotometric titration method was applied to the measurement of microgram quantities of fluoride, sulfate, uranium, and thorium. A new indicator, quercetin, was utilized in the estimation of thorium by a titration with (ethylenedinitrilo)tetraacetic acid. Optimium conditions were established for the determination of as little as 6 gamma of fluoride and sulfate, 12 gamma of uranium, and 2 gamma of thorium, with a coefficient of variation of 4, 5, 3, and 1%, respectively. In the case of sulfate, an approximately 10-fold increase in sensitivity was obtained by carrying out the titration in 50% isoamyl alcohol. The additions to a Warren Spectracord, which was used in this study, included the time-drive attachment, a titrant-feed assembly, and modifications to permit access to the sample compartment without removing the stirrer and buret tip. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-13-001151
• OSTI ID: 4286278
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 30; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALCOHOLS
ALKYL RADICALS
CHEMICALS
CHEMISTRY
COLOR
EDTA
ERRORS
FLUORIDES
GLYCOSIDES
INSTRUMENTS
INTERFERING ELEMENTS
LABORATORY EQUIPMENT
LIGHT
MEASURED VALUES
PERFORMANCE
PHOTOMETRY
QUALITATIVE ANALYSIS
QUERCETIN
SALTS
SENSITIVITY
SOLVENTS
SPECTROPHOTOMETRY
SPECTROSCOPY
SULFATES
THORIUM
TITRATION
TRACE AMOUNTS
URANIUM