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

被引：9
作者：
Wang Yingying [1 ]
Tan Kejun [1 ]
Yuan Rui [1 ]
机构：
[1] Southwest Univ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Minist Educ PRC, Coll Chem & Chem Engn, Chongqing 400715, Peoples R China
来源：
ACTA CHIMICA SINICA | 2012年 / 70卷 / 05期
基金：
中国国家自然科学基金;
关键词：
mercury(II); (1-hexadecyl)triphenylphosphonium bromide; resonance light scattering; DNA; PROTEINS;
D O I：
10.6023/A1105052
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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 similar to 1.5 mu mol/L. The limit of detection (3 sigma) is 4.0 nmol/L. In this work, the optimum reaction conditions and the interference of foregin 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%.
引用
收藏
页码：643 / 648
页数：6
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