Biological Activity of Nanocomposite Detoxicant in Biotest-Systems
VERA A. TEREKHOVA1,2, KAMILA A. KYDRALIEVA3, DMITRIY N. MATORIN1, OLGA V. LISOVITSKAYA1, ANNA A. YURISHCHEVA3
Моscow State University, 1-16, Leninskiye Gory, 119234 Moscow, Russia Ecology and Evolution Institute RAS, 33, Leninskiy pr., 119056 Moscow, Russia Moscow Aviation Institute, 4 Volokolamskoe sh., 125993 Moscow, Russia
Synthetic nanoparticles (NPs) are widely recommended as effective structural components of agents for remediation of environments. The choice of an application dose of nanosorbents is based usually mainly on the sorption properties. Despite of a growing understanding that synthetic NPs should be evaluated for their potential environmental hazard prior their use in products and release into the environment, there are currently few data on the toxicity of nanomaterials to environmentally relevant species. Responses of living organisms in standard biotests under controlled conditions remain the most important part of the safety assessment in ecotoxicological purposes. We recommend the battery tests organisms which represent the main trophic ecosystem levels to establish the safety dose for elaborated nanosorbent of toxic substances.This work summarizes the major features of a magnetoactive nanocomposite sorbent of uranyl and cadmium ions synthesized based on magnetite and humic acids. An assessment of ecotoxicity and biological activity of nanocomposite using four bioassay systems (algae, paramecium, mustard seed, and bull spermatozoa) allowed us to determine concentration limits for application of this detoxicant.
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