Analytical control of silica glass production. Voltammetric determination of titanium and iron in raw materials and silica glass samples

Adsorptive stripping voltammetric (AdSV) methods are presented for the determination of titanium and iron in quartz and silica glass samples obtained after pressure decomposition. Mandelic acid and catechol were used as complexing agents for titanium and iron, respectively. The method for titanium d...

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Bibliographic Details
Published inFresenius' journal of analytical chemistry Vol. 367; no. 8; pp. 763 - 765
Main Authors GAWRYS, M, GOLIMOWSKI, J
Format Journal Article
LanguageEnglish
Published Berlin Springer 01.08.2000
Subjects
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
Catalytic reaction
Glass
Acid digestion
Mandelic acid
Metal complex
Titanium
Chlorates
Voltammetry
Iron
Raw materials
Chemical enrichment
Atomic absorption spectrometry
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Summary:Adsorptive stripping voltammetric (AdSV) methods are presented for the determination of titanium and iron in quartz and silica glass samples obtained after pressure decomposition. Mandelic acid and catechol were used as complexing agents for titanium and iron, respectively. The method for titanium determination is based on the catalytic effect of chlorate ions. An insoluble residue remaining after decomposition of quartz and silica glass samples in HF+H2SO4 mixture was checked by energy-dispersive X-ray analyses. ET-AAS was applied as a reference method to AdSV measurements.
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ISSN:0937-0633
1432-1130
DOI:10.1007/s002160000452