Selective two-step titration of thorium by sulfate displacement of the diethylenetriaminepentaacetic acid complex
Thorium and other metals are complexed with excess diethylenetriaminepentaacetic acid (DTPA) at pH 1.4, the excess DTPA is titrated with Bi(III) to a xylenol orange end point, sulfate is added to complex Th(IV), and the displaced DTPA again is titrated with Bi(III). Of 61 metal ions and nonmetal anions tested, only Ga(III), Sc(III), tungstate, citrate, oxalate, and thiosulfate interfere seriously. Lesser interferences are In(III), Zr(IV), V(IV), and permanganate. The standard deviation is 2 ..mu..g for 56 to 840 ..mu..g Th.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5224715
- Report Number(s):
- LA-8349; TRN: 80-014719
- Country of Publication:
- United States
- Language:
- English
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Study of the chromogenic reactions of semi-xylenol orange with rare earths and thorium
HIGH-FREQUENCY TITRATION AS APPLIED TO THE DETERMINATION OF THORIUM, URANIUM, SULFATE, AND FREE ACID. PARTS I-V
PHOTOMETRIC TITRATIONS. V. A SELECTIVE, CHELOMETRIC DETERMINATION OF COBALT
Journal Article
·
Wed Jan 01 00:00:00 EST 1992
· Analytical Letters; (United States)
·
OSTI ID:5224715
HIGH-FREQUENCY TITRATION AS APPLIED TO THE DETERMINATION OF THORIUM, URANIUM, SULFATE, AND FREE ACID. PARTS I-V
Technical Report
·
Mon May 11 00:00:00 EDT 1959
·
OSTI ID:5224715
PHOTOMETRIC TITRATIONS. V. A SELECTIVE, CHELOMETRIC DETERMINATION OF COBALT
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·
Fri Dec 01 00:00:00 EST 1961
· Talanta (England)
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OSTI ID:5224715
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
THORIUM
TITRATION
BISMUTH COMPOUNDS
DTPA
INTERFERING ELEMENTS
SULFATES
THORIUM COMPLEXES
XYLENOL ORANGE
ACTINIDE COMPLEXES
ACTINIDES
AMINO ACIDS
CARBOXYLIC ACIDS
CHELATING AGENTS
COMPLEXES
DRUGS
DYES
ELEMENTS
INDICATORS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RADIOPROTECTIVE SUBSTANCES
RESPONSE MODIFYING FACTORS
SULFUR COMPOUNDS
400102* - Chemical & Spectral Procedures
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
THORIUM
TITRATION
BISMUTH COMPOUNDS
DTPA
INTERFERING ELEMENTS
SULFATES
THORIUM COMPLEXES
XYLENOL ORANGE
ACTINIDE COMPLEXES
ACTINIDES
AMINO ACIDS
CARBOXYLIC ACIDS
CHELATING AGENTS
COMPLEXES
DRUGS
DYES
ELEMENTS
INDICATORS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RADIOPROTECTIVE SUBSTANCES
RESPONSE MODIFYING FACTORS
SULFUR COMPOUNDS
400102* - Chemical & Spectral Procedures