Determination of mercury (II) by spectrophotometric method based on self assembly of gold nanoparticles
الموضوعات : Journal of the Iranian Chemical ResearchYan Du 1 , Jing Yan 2 , Mei Ni 3 , Bao Du 4
1 - College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China
2 - College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China
3 - College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China
4 - College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R.. China
الکلمات المفتاحية: Spectrophotometer, Gold nanoparticles, Mercury (II), Glutathione,
ملخص المقالة :
Due to the binding of the –COO- group with the mercury (II), gold nanoparticlesfunctionalized with glutathione can self-assemble to form a supermolecular network in the HAc-NaAc buffer solution. The aggregation of functionalized gold nanoparticles and mercury (II)caused the shift of maximum absorption peak of the UV-Vis spectrum from 520 nm to 609 nm.Based on this principle, a simple spectrophotometric method for determination of mercury (II)was preliminarily established. The detection limit of the developed method for determination ofmercury (II) was about 8.5×10-8 mol L-1.
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