Ultraviolet spectrophotometric determination of gadolinium in concentrated solutions of nitrate salts
Journal Article
·
· Anal. Chem.; (United States)
Ultraviolet spectroscopy was successfully applied for determining the gadolinium concentration in Gd(NO/sub 3/)/sub 3/ solutions. The /sup 6/I/sub 15/2/, /sup 6/I/sub 13/2/ reverse arrow /sup 8/S/sub 7/2/ transitions of the Gd/sup 3 +/ ion, which are responsible for the fine structure at 272.8 nm, were selected as a basis for the investigation of three analytical modes, one based on three wavelength measurements (mode ABS) and the others on first- and second-derivative measurements (modes deltaA/deltalambda and delta/sup 2/A/deltalambda/sup 2/). For the particular problem concerned here, namely, to deal with nitrate interference in the spectral region of interest (270-280 nm), the best performance was shown by the first-order derivative mode, which had a precision of +- 0.035 g L/sup -1/, a discrimination limit of 0.071 g L/sup -1/, and an accuracy of 0.60% for an 8 g L/sup -1/ Gd solution. This study shows that it is possible to adopt this principle for quantitative analysis of the Gd(NO/sub 3/)/sub 3/ solutions (0.0509 M or 8 g L/sup -1/ Gd) used in the emergency shutdown systems of CANDU-PHW (Canada deuterium uranium-pressurized heavy water) reactors. 19 references, 4 figures, 2 tables.
- Research Organization:
- IREQ (Institut de Recherche d'Hydro-Quebec), Varennes
- OSTI ID:
- 5699711
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:6; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210400 -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ACCURACY
CHEMICAL ANALYSIS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
GADOLINIUM
GADOLINIUM COMPOUNDS
GADOLINIUM NITRATES
INFORMATION
MEASURING INSTRUMENTS
METALS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERFORMANCE
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
RARE EARTHS
SALTS
SOLUTIONS
SPECTRA
SPECTROMETERS
TRACE AMOUNTS
ULTRAVIOLET SPECTRA
ULTRAVIOLET SPECTROMETERS
210400 -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ACCURACY
CHEMICAL ANALYSIS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
GADOLINIUM
GADOLINIUM COMPOUNDS
GADOLINIUM NITRATES
INFORMATION
MEASURING INSTRUMENTS
METALS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERFORMANCE
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
RARE EARTHS
SALTS
SOLUTIONS
SPECTRA
SPECTROMETERS
TRACE AMOUNTS
ULTRAVIOLET SPECTRA
ULTRAVIOLET SPECTROMETERS