Published November 1990 | Version v1
Journal article Metadata-only

Study on a ultrasensitive spectrophotometric method for the determination of uranium: Pt. 6

Creators

  • 1. Correspondence Department, Yunnan University (China)
  • 2. Department of Chemistry, Yunnan University (China)

Description

A new ultrasensitive and selective method based on the ionic associated complex in the system of uranium(VI)-thiocyanate-ethyl violet-polyvinyl alcohol is investigated. The complex gives maximum absorbance at 550 nm in a solution containing 0.36-0.48 mol/l sulfuric acid. Its apparent molar absorptivity in 5.8 x 106 l·mol-1·cm-1. Beer's law is obeyed for uranium(VI) in the range of 0 to 2.5 μg/25 ml. Tolerance limits are determined for various foreign ions. This method has been applied to rapid and direct determination of trace amounts of uranium(VI) in ores minerals with satisfactory results

Additional details

Additional titles

Subtitle (English)
On aqueous medium ethyl violet and thiocyanate

Publishing Information

Journal Title
Journal of Nuclear and Radiochemistry
Journal Volume
12
Journal Issue
4
Series
J. Nucl. Radiochem.
Journal Page Range
220-224, 234
ISSN
0253-9950
CODEN
HHHHD

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
22083203
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACCURACY; PVA; QUANTITATIVE CHEMICAL ANALYSIS; SPECTROPHOTOMETRY; THIOCYANATES; TRIPHENYLMETHANE DYES; URANIUM ORES; URANYL COMPLEXES
Descriptors DEC
ACTINIDE COMPLEXES; ALCOHOLS; ANTITHYROID DRUGS; CARBONIC ACID DERIVATIVES; CHEMICAL ANALYSIS; COMPLEXES; DRUGS; DYES; HYDROXY COMPOUNDS; ORES; ORGANIC COMPOUNDS; ORGANIC POLYMERS; ORGANIC SULFUR COMPOUNDS; POLYMERS; POLYVINYLS; URANIUM COMPLEXES