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Citation: WANG Yingying, LI Huachun, TAN Kejun. Determination of Trace Mercury with Thioacetamide in Environmental Water Samples by Resonance Light Scatting[J]. Chinese Journal of Applied Chemistry, ;2012, 29(2): 233-237. doi: 10.3724/SP.J.1095.2012.00093 shu

Determination of Trace Mercury with Thioacetamide in Environmental Water Samples by Resonance Light Scatting

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, China

Corresponding author: TAN Kejun,
Received Date: 10 March 2011
Available Online: 3 May 2011
Fund Project: 国家自然科学基金(20877063) (20877063)重庆市科学技术委员会基金(CSTC,2007BB7360)资助项目 (CSTC,2007BB7360)

In pH=3.29 acidic medium,the interaction of Hg(Ⅱ) with thioacetamide(TAA) occurs and results in greatly enhanced resonance light scattering(RLS) signals characterized by a peak at 379.0 nm.The results show that the enhanced RLS signals intensity(ΔI_RLS) at 379.0 nm is proportional to the concentration of TAA.A RLS method for the determination of trace mercury ions is then established accordingly.The linear range is 0.2~10.0 μmol/L.The limit of detection is 0.02 μmol/L for Hg(Ⅱ).Effects of the acidity,ionic strength,temperature and coexisting substances interference are also investigated.The method has been applied successfully to the determination of Hg²⁺ in environmental samples.
- resonance light scattering,
- mercury,
- thioacetamide
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