Adsorption of chromium(VI) by titanium(IV) oxide coated on a silica gel surface
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 116 (3) , 281-283
- https://doi.org/10.1039/an9911600281
Abstract
Titanium(IV) oxide, coated on the surface of silica gel (surface area, 308 m2 g–1; amount of TiIV per gram of modified silica gel, 1.8 × 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 CrVI from 0.5 ppm solutions of chromate very efficiently and virtually 100% recovery was achieved in every instance.Keywords
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