Determination of oxidic impurities in some lead halides

Determination of oxidic impurities in some lead halides

The paper presents a method for the determination of the concentration of oxidic compounds — ranging between 0.16 and 4.0 wt.% PbO — in some lead halides (except iodide). The method is based on the reaction of oxidic compounds with sulphur in sealed evacuated glass ampoules at 440°C under formation...

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Bibliographic Details
Published in:Analytica chimica acta Vol. 355; no. 2; pp. 171 - 174
Main Authors: Málková, Zuzana, Nitsch, Karel, Novák, Josef
Format: Journal Article
Language:English
Published: Elsevier B.V 28-11-1997
Subjects:
Iodometric determination of oxidic impurities
Lead halide
Lead oxy(hydroxy)halide
Photometry
Titrimetry
Lead halide
Titrimetry
Iodometric determination of oxidic impurities
Lead oxy(hydroxy)halide
Photometry
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Summary:The paper presents a method for the determination of the concentration of oxidic compounds — ranging between 0.16 and 4.0 wt.% PbO — in some lead halides (except iodide). The method is based on the reaction of oxidic compounds with sulphur in sealed evacuated glass ampoules at 440°C under formation of sulphur dioxide. The SO 2 produced can be determined by both iodometric titration and photometric measurement. The latter method gives more satisfactory and reproducible results.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(97)00489-3