Published February 1997
| Version v1
Journal article
Spectrophotometric determination of microamounts of uranium in rocks with DMPAQ
- 1. Hunan Univ., Changsha (China). Dept. of Chemistry and Chemical Engineering
- 2. East China Geological College, Nanchang (China). Dept. of Applied Chemistry
Description
The color reaction of uranium (VI) with a newly synthesised reagent, 5-(4-dimethyl aminophenylazo)-8-hydroxyquinoline (DMPAQ), has been investigated. In a medium of Triton X-100 and pH 7.0∼9.0 buffer solution, U(VI) reacts with DMPAQ to form a stable complex with a molar ratio of 1:2. The complex exhibits a maximum absorption at 515 nm with an apparent molar absorptivity of 5.6 x 103 m2/mol. Beer's law is obeyed in the range of 0-2.0 μg/mL of U(VI). In the presence of CyDTA, most common ions do not interfere with the determination of U. The proposed method is applied to the determination of microamounts of uranium in rocks after the separation by TBP chromatography. The results are satisfactory
Additional details
Publishing Information
- Journal Title
- Journal of Nuclear and Radiochemistry
- Journal Volume
- 19
- Journal Issue
- 1
- Journal Page Range
- p. 59-64.
- ISSN
- 0253-9950
- CODEN
- HHHHDH
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 28046355
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- BUFFERS; CHEMICAL COMPOSITION; EXTRACTION CHROMATOGRAPHY; OXINE; PH VALUE; ROCKS; SPECTROPHOTOMETRY; STABILITY; TBP; URANIUM; URANYL COMPLEXES
- Descriptors DEC
- ACTINIDE COMPLEXES; ACTINIDES; AROMATICS; AZAARENES; AZINES; BUTYL PHOSPHATES; CHROMATOGRAPHY; COMPLEXES; ELEMENTS; ESTERS; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; METALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PHOSPHORIC ACID ESTERS; PYRIDINES; QUINOLINES; SEPARATION PROCESSES; URANIUM COMPLEXES