INVESTIGATION OF ACTIVATOR (MN, SB) SPECIATION IN PHOSPHORS FOR FLUORESCENT LAMPS

Authors
DOBROWOLSKI R MIERZWA J
Citation
R. Dobrowolski et J. Mierzwa, INVESTIGATION OF ACTIVATOR (MN, SB) SPECIATION IN PHOSPHORS FOR FLUORESCENT LAMPS, Materials chemistry and physics, 34(3-4), 1993, pp. 270-273
Citations number
10
Categorie Soggetti
Material Science
Journal title
Materials chemistry and physics → ACNP
ISSN journal
02540584
Volume
34
Issue
3-4
Year of publication
1993
Pages
270 - 273
Database
ISI
SICI code
0254-0584(1993)34:3-4<270:IOA(SS>2.0.ZU;2-A
Abstract
The speciation of antimony and manganese (activators for fluorescent l amp phosphors) in samples of commercial calcium halophosphate phosphor s for fluorescent lamps was investigated. The total antimony content w as determined by flame atomic absorption spectrometry (FAAS), and the antimony(III) content by controlled-current coulometric titration. A m ethod for examination of manganese speciation was proposed. Manganese forms were investigated by the partial dissolution technique using var ious agents and by FAAS analysis. The proposed methods can successfull y be applied for control of phosphor properties and manufacturing proc esses.