Silver Nanoparticles: Green Synthesis, Characterization, and Their Usage in Determination of Mercury Contamination in Seafoods | Zendy

Muhammad Ahad Ahmed | Zendy; Najmul Hasan | Zendy; Shaikh Mohiuddin | Zendy

Open Access

Silver Nanoparticles: Green Synthesis, Characterization, and Their Usage in Determination of Mercury Contamination in Seafoods

Author(s) -

Muhammad Ahad Ahmed,

Najmul Hasan,

Shaikh Mohiuddin

Publication year - 2014

Publication title -

isrn nanotechnology

Language(s) - English

Resource type - Journals

eISSN - 2090-6072

pISSN - 2090-6064

DOI - 10.1155/2014/148184

Subject(s) - absorbance , detection limit , mercury (programming language) , aqueous solution , nanoparticle , silver nanoparticle , surface plasmon resonance , chemistry , redox , ion , linear range , nuclear chemistry , analytical chemistry (journal) , inorganic chemistry , materials science , nanotechnology , chromatography , organic chemistry , computer science , programming language

We demonstrate that silver nanoparticles undergo an interaction with Hg2+ found in traces. The PEG-PVP-stabilized Ag nanoparticles were successfully synthesized via a reduction approach and characterized with surface plasmon resonance UV/Vis spectroscopy. By utilizing the redox reaction between Ag nanoparticles and Hg2+, and the resulted decrease in UV/Vis signal, we develop a colorimetric method for detection of Hg2+ ion. A linear and inversely proportional relationship was found between the absorbance intensity of the Ag nanoparticles and the concentration of Hg2+ ion over the range from 10 ppm to 1 ppm at absorption on 411 nm. The detection limit for Hg2+ ions in homogeneous aqueous solutions is estimated to be 1 ppm. This system shows excellent selectivity for Hg2+. The results found have potential implications in the development of new colorimetric sensors for easy and selective detection and monitoring of mercuric ions in aqueous solutions. The proposed method was successfully applied to quantify the amount of mercury in seafood.

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