COMPLEXOMETRIC TITRATION OF YTTRIUM AND THE LANTHANONS. I. A COMPARISON OF DIRECT METHODS

Journal Article · Thu Oct 31 23:00:00 EST 1963 · Talanta (England)

DOI:https://doi.org/10.1016/0039-9140(63)80170-8· OSTI ID:4160499

Lyle, S J; Rahman, Md M

A comparison was made of a number of direct complexometric titrations previously published ior the determination of yttrium and the lanthanons. Working and optimum pH ranges were obtained for what are considered to be the best indicators, Alizarin Red S screened with Methylene Blue, Eriochrome Black T, Copper-Naphthyl Azoxine, and Xylenol Orange. The precision and accuracy of the selected methods were determined by carrying out replicate titrations on standard solutions of cerium(III),) yttrium, and ytterbium. The results, together with additional observations made on the behavior of indicators in the different methods, suggest that Xylenol Orange at pH 5.8 to 6.4 is most satisfactory and convenient for direct titrations. (auth)

• Research Organization: Univ. of Durham City, Eng.
• NSA Number: NSA-18-001583
• OSTI ID: 4160499
• Journal Information: Talanta (England), Journal Name: Talanta (England) Vol. Vol: 10; ISSN TLNTA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
ALIZARIN
CHEMISTRY
COMPLEXES
DYES
EFFICIENCY
ERIOCHROME DYES
METHYLENE BLUE
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
RARE EARTHS
SOLUTIONS
STANDARDS
TITRATION
XYLENOL ORANGE
YTTRIUM