Adsorption of Trace Selenium on Nano-Ti₂ from Natural Water Samples

Title:Adsorption of Trace Selenium on Nano-Ti₂ from Natural Water Samples

Volume: 11 Issue: 3

Author(s): Ting Huang

Affiliation:

Keywords: Adsorption, natural water samples, nano-TiO₂, selenium(IV).

Abstract: Anatase nano titanium oxide was used as a sorbent for the separation and preconcentration of selenium(IV) from liquor. The selenium was determined by hydride generation-atomic fluorescence spectrometry (HG-AFS) with KBH4-HCl. The results showed that the adsorption percentage of selenium( IV) was 92% at pH 4-6, and the elution by NaOH reached 95%. The adsorption equilibrium accorded with the Langmuir isotherm model and the maximum adsorption capacity was 32.17 mg g^-1 at 293 K. The detection limit of selenium(IV) (3σ, n = 11) was 0.57 µg L^-1 and the relative standard deviation was 7.48%. The process has been successfully applied to the contents determination of trace selenium(IV) in some natural water samples with satisfactory results.

Cite this article as:

Huang Ting, Adsorption of Trace Selenium on Nano-Ti₂ from Natural Water Samples, Current Analytical Chemistry 2015; 11 (3) . https://dx.doi.org/10.2174/1573411011666150219203541