Acta Chimica Sinica ›› 2012, Vol. 0 ›› Issue (05): 643-648 .DOI: 10.6023/A1105052 Previous Articles     Next Articles

Full Papers

基于与HTPB 相互作用共振光散射法测定Hg2+

王莹莹, 谭克俊, 袁睿   

  1. 三峡库区生态环境教育部重点实验室 西南大学化学化工学院 重庆 400715
  • 投稿日期:2011-05-05 修回日期:2011-10-10 发布日期:2011-11-28
  • 通讯作者: 谭克俊
  • 基金资助:

    国家自然科学基金(No. 20877063)和重庆市科学技术委员会基金(CSTC, 2007BB7360)资助项目.

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

Wang Yingying, Tan Kejun, Yuan Rui   

  1. 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:2011-05-05 Revised:2011-10-10 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).

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%.

Key words: mercury(II), (1-hexadecyl)triphenylphosphonium bromide, resonance light scattering