Spectrophotometric investigation and determination of scandium using semi-xylenol orange

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032718508067970· OSTI ID:6437484

Hafez, M A.H.; Kenawy, I M.M.; Kabil, M A

The composition, stability constant and molar absorption coefficient of the chelate of scandium ion with Semi-Xylenol Orange (SXO) are determined spectrophotometrically in a medium of chloroacetate buffer. In the scandium-Semi-Xylenol Orange system, Sc(SXO) chelate is formed with a logarithmic stability constant of 19.66 and molar absorptivity of 2.4 x 10/sup 4/ (530 nm) 1 mole/sup -1/ cm/sup -1/. The precision and accuracy attainable in a direct photometric microtitration of Sc/sup + + +/ ion with a 0.001M solution of EDTA using SXO as a metallochromic indicator has been studied. Interferences of different anions and cations on scandium determination are also investigated. Spectrophotometric determination of scandium(III) using SXO at the optimum conditions has been carried out. Beer's law is obeyed for 0-13.49 ..mu..g scandium/25 ml.

• Research Organization: El-Mansoura Univ., Egypt
• OSTI ID: 6437484
• Journal Information: Anal. Lett.; (United States), Journal Name: Anal. Lett.; (United States) Vol. 18:A16; ISSN ANALB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
CHEMICAL ANALYSIS
ELEMENTS
INDICATORS
INTERFERING ELEMENTS
METALS
QUANTITATIVE CHEMICAL ANALYSIS
SCANDIUM
SPECTROPHOTOMETRY
TRANSITION ELEMENTS