SPECTROPHOTOMETRIC DETERMINATION OF THORIUM WITH 2-(4-CARBOXY-3- HYDROXYPHENYLAZO)-1,8-DIHYDROXYNAPHTHALENE-3,6-DISULFONIC ACID
Journal Article
·
· Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.
An azo dye, prepared from diazotized p-aminosalicylic acid and disodium salt of chromotropic acid, produces a reddish violet, soluble thorium complex. The color reaction exhibits an absorbance maximum at a wave length of 580 m mu and conforms to Beer's law. The thorium-dye complex appears to have the composition 1 to 1. A direct spectrophotometric method has been developed for the determination of thorium in dilute solutions. Only iron, zirconium, cerium(IV), gold, Phosphates, and fluorides intefere. The interference of iron(III) can be removed by adding ascorbic acid. Thorium has also been estimated in monazite and black sands extracts with this dye. (auth)
- Research Organization:
- Darjeeling Government Coll., India
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-001147
- OSTI ID:
- 4303019
- Journal Information:
- Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 30; ISSN ANCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ABSORPTION
AMINES
ASCORBIC ACID
BEER LAW
BLACK SANDS
CERIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMICALS
CHEMISTRY
CHROMOTROPIC ACID
COLOR
COMPLEXES
COMPOUNDS
DYES
FLUORIDES
GOLD
HYDROXIDES
IMPURITIES
INTERFERING ELEMENTS
IRON
IRON COMPOUNDS
IRRADIATION
LIGHT
MEASURED VALUES
MINERALS
MONAZITES
NAPHTHALENE
ORES
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
PERFORMANCE
PHOSPHATES
PHOTOMETRY
PREPARATION
QUALITATIVE ANALYSIS
QUANTITY RATIO
SALICYLIC ACID
SAND
SODIUM COMPOUNDS
SOLUBILITY
SOLUTIONS
SPECTROSCOPY
SULFONIC ACIDS
SULFURIC ACID
THORIUM
THORIUM COMPLEXES
USES
VITAMIN C
VITAMINS
WATER
ZIRCONIUM
AMINES
ASCORBIC ACID
BEER LAW
BLACK SANDS
CERIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMICALS
CHEMISTRY
CHROMOTROPIC ACID
COLOR
COMPLEXES
COMPOUNDS
DYES
FLUORIDES
GOLD
HYDROXIDES
IMPURITIES
INTERFERING ELEMENTS
IRON
IRON COMPOUNDS
IRRADIATION
LIGHT
MEASURED VALUES
MINERALS
MONAZITES
NAPHTHALENE
ORES
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
PERFORMANCE
PHOSPHATES
PHOTOMETRY
PREPARATION
QUALITATIVE ANALYSIS
QUANTITY RATIO
SALICYLIC ACID
SAND
SODIUM COMPOUNDS
SOLUBILITY
SOLUTIONS
SPECTROSCOPY
SULFONIC ACIDS
SULFURIC ACID
THORIUM
THORIUM COMPLEXES
USES
VITAMIN C
VITAMINS
WATER
ZIRCONIUM