Adsorption of chromium(VI) by titanium(IV) oxide coated on a silica gel surface
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Coadvisor
Graduate program
Undergraduate course
Journal Title
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Publisher
Royal Soc Chemistry
Type
Article
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Acesso restrito
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Abstract
Titanium(IV) oxide, coated on the surface of silica gel (surface area, 308 m2 g-1; amount of Ti(IV) per gram of modified silica gel, 1.8 x 10(-3) mol), was used to adsorb CrO4(2-) ions from acidic solutions. The exchange capacity increased at lower pH values and was affected to some extent by the acid used. The material was used to preconcentrate Cr(VI) from 0.5 ppm solutions of chromate very efficiently and virtually 100% recovery was achieved in every instance.
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Keywords
Titanium(IV) oxide modified silica, Silica gel surface coated with titanium(IV) oxide, Chromium(VI) determination, Preconcentration of chromium(VI)
Language
English
Citation
Analyst. Cambridge: Royal Soc Chemistry, v. 116, n. 3, p. 281-283, 1991.
