Spectrophotometric determination of zirconium(IV) and hafnium(IV) with 1-(2'thiazolylazo)-2-naphthol
1-(2'-thiazolylazo)-2-naphthol (TAN) reacts with zirconium(IV) and hafnium(IV) in acid media to form sparingly soluble 1:4 red-colored chelates, which are dissolved in 40 and 32% methanol (v/v) respectively. The complex of Hf(IV) is stable only in the presence of sodium dodecylsulfate (0.1%, w/v), which also increases the sensitivity of the system. The Zr(IV)-TAN and Hf(IV)-TAN and Hf(IV)-TAN complexes exhibit maximum absorbance at 600 and 580 nm, obey Beer's law in the concentration ranges 0.04-2.88 and 0.8-2.60 ..mu..g/ml of Zr(IV) and Hf(IV), have molar absorptivities of 5.25 x 10/sup 4/ and 3.43 x 10/sup 4/ liter x mole/sup -1/ x cm/sup -1/, Sandell sensitivities 2.0 and 5.0 ng x cm/sup 12/, and coefficients of variation +/-1.40 and +/-1.06 respectively.
- Research Organization:
- Indian Institute of Technology, Bombay
- OSTI ID:
- 6975528
- Journal Information:
- J. Anal. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Anal. Chem. USSR (Engl. Transl.); (United States) Vol. 42:5; ISSN JACUA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Liquid-liquid extraction, photometric and atomic absorption spectrophotometric determination of mercury
Voltammetric determination of zirconium(IV) and hafnium(IV)
Related Subjects
400102* -- Chemical & Spectral Procedures
ABSORPTIVITY
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
AROMATICS
AZO COMPOUNDS
AZOLES
BERYLLIUM COMPOUNDS
CHELATES
COMPLEXES
COMPLEXOMETRY
DISSOLUTION
HAFNIUM COMPLEXES
HAFNIUM COMPOUNDS
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INTERFERING ELEMENTS
IODINE COMPOUNDS
NAPHTHOLS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
QUANTITY RATIO
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SENSITIVITY
SODIUM COMPOUNDS
SODIUM SULFATES
SPECTROPHOTOMETRY
STABILITY
SULFATES
SULFUR COMPOUNDS
THIAZOLES
THORIUM COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
VALENCE
ZIRCONIUM COMPLEXES
ZIRCONIUM COMPOUNDS