Paper Title:
Adsorption and Preconcentration Capabilities of Nano-Barium-Strontium Titanate Powder Coated by Dithizone for Trace Bismuth
  Abstract

A new method for the adsorption and preconcentration of bismuth in urine was described. The methodology combines determined using a hydride generation-atomic absorption spectrometry (HG-AAS) with pre-concentration and separation of the bismuth on the nano-barium-strontium titanate powder coated by dithizone (BST-dithizone). The experimental conditions for the pre-concentration and separation of the bismuth, including pH value of the medium, shaking time, eluent condition and co-existing ions have been investigated. The result showed that the bismuth in urine could be adsorbed on the BST-dithizone. The adsorption percentage was affected by the pH value of medium and shaking time. In the medium of pH 6.0, the adsorption capacity of BST-dithizone to bismuth (III) was 13.4 mg·g-1 when the shaking time was 10 min. The bismuth adsorbed on the BST-dithizone could be completely eluated by 2 mol·L-1 HNO3. The enrichment factor was 100. The detection limit of bismuth (III) was 5.1 ng·L−1.The method has been applied to the pre-concentration and separation of bismuth in the human urine and tap water with satisfied results.

  Info
Periodical
Chapter
Chapter 6: Frontiers of Manufacturing and Design
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
3504-3507
DOI
10.4028/www.scientific.net/AMM.71-78.3504
Citation
D. Zhang, "Adsorption and Preconcentration Capabilities of Nano-Barium-Strontium Titanate Powder Coated by Dithizone for Trace Bismuth", Applied Mechanics and Materials, Vols. 71-78, pp. 3504-3507, 2011
Online since
July 2011
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