determination of mercury (ii) by spectrophotometric method based on self assembly of gold nanoparticles
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abstract
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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Journal title:
journal of the iranian chemical researchجلد ۴، شماره ۲، صفحات ۸۷-۹۱
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