Studies of the impact of the interactions between nanoparticles and heavy metals at different ratios is an innovative way to study environmental toxicology. Gold and silver nanoparticles were prepared using a double reduction reaction. Silver and gold nanoparticles were characterized with UV Spectroscopy. The average diameters according to Dynamic Light Scattering was 50-70 nm for both nanoparticles. Seeds of radish plants were incubated in aqueous solutions of different proportions of nanoparticles and lead concentrations (1:1, 1:0.5, 1:0.3). The germination rate was determined counting germinated seeds in 24 hours. Primary roots were measure at 72 hours. Silver nanoparticles were more effective than gold nanoparticles for germination and root elongations. Comparing to lead and other controls nanoparticles may act as stimulators or inhibitors for the metabolic processes during germination and root elongation.

Comparative interactions of gold and silver nanoparticles and lead in the rates of germination and root elongation of radish plants

249th National Meeting (2015)

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