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Determination of Hg2+ by Resonance Light Scattering Technique Based on the Interaction with HTPB

  • Wang Yingying ,
  • Tan Kejun ,
  • Yuan Rui
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  • Key Laboratory of Eco-Environments of Three Gorges Reservoir Region under Ministry of Education of PRC, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715

Received date: 2011-05-05

  Revised date: 2011-10-10

  Online published: 2011-11-28

Supported by

Project supported by the National Natural Science Foundation of China (No. 20877063) and the Chongqing Municipal Science and Technology Commission Foundation (CSTC, 2007BB7360).

Abstract

In acidic medium, a resonance light scattering (RLS) analytical method of Hg(II) was established based on the enhanced RLS signal due to the interaction of (1-hexadecyl)triphenylphosphonium bromide (HTPB) and HgBr42- ion derived from the reaction between mercury ion and excess potassium bromide. The enhanced RLS intensity at 291.0 nm is proportional to the content of mercury(II) in a range of 0.04~1.5 μmol/L. The limit of detection (3σ) is 4.0 nmol/L. In this work, the optimum reaction conditions and the interference of foreign substances of the system were investigated. At the same time, the absorption spectral as well as the reaction mechanism were also investigated. This method has been successfully applied to the determination of mercury(II) in environmental samples with RSD≤4.42%.

Cite this article

Wang Yingying , Tan Kejun , Yuan Rui . Determination of Hg2+ by Resonance Light Scattering Technique Based on the Interaction with HTPB[J]. Acta Chimica Sinica, 2012 , 0(05) : 643 -648 . DOI: 10.6023/A1105052

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