Interaction of nanoparticles of gold with aquatic plant: Binding to Ceratophyllum demersum
2010
Ostroumov, S.A., M.V. Lomonosov Moscow State University, Moscow (Russian Federation). Faculty of Biology | Kolesov, G.M., Russian Academy of Sciences, Moscow (Russian Federation). V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry
This is the first time it was shown that the nanoparticles of gold (Au) in substantial amount bind to the living biomass of the aquatic plant (macrophyte), Ceratophyllum demersum. The concentrations of gold were measured in the samples of the phytomass using neutron activation analysis (NAA). As a result of the binding and/or immobilization of the nanoparticles, the amount of gold in the samples of the phytomass increased manifold above the background level of gold in the plant tissues. The increase was by two orders of magnitude. The new data added some new information to the modern vision of the multifunctional role of the biota in the migration of elements in aquatic ecosystems [9, 10]. Also, the result added new information to the studies of interactions of gold with organisms [17-23] that may contribute to new biotechnologies.
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