Determination of Sulfate with Chromium-51

Journal Article · Sat Jun 01 00:00:00 EDT 1963 · Analytical Chemistry

DOI:https://doi.org/10.1021/ac60200a044· OSTI ID:4712265

Armento, W. J.; Larson, C. E.

A procedure was developed for the determination of sulfate with Cr⁵¹. The method involves the reaction in which the sulfate is precipitated with an excess of a HCl solution of BaCrO₄. After neutralization of the solution with ammonia, the insoluble BaSO₄ and excess BaCrO/sub 4/ are filtered off and the soluble chromate, equivalent to the sulfate originally present, is determined by redox titration. The excess is measured by first adding Cr⁵¹ trace to the BaCrO₄ solution and then measuring the activity of the excess chromate. With the use of Cr⁵¹, the determination can be performed in the presence of substances that interfere with the normal redox titration procedure.

• Research Organization: Oak Ridge National Lab., Tenn.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-023268
• OSTI ID: 4712265
• Journal Information: Analytical Chemistry, Vol. 35, Issue 7; Other Information: Orig. Receipt Date: 31-DEC-63; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACIDITY
AMMONIA
BARIUM OXIDES
BARIUM SULFATES
CHEMICAL REACTIONS
CHROMATES
CHROMIUM 51
FILTERS
HYDROCHLORIC ACID
PRECIPITATION
QUANTITATIVE ANALYSIS
SOLUTIONS
SULFATES
TRACER TECHNIQUES