The influence of hydrothermal nanosilica powder aquaspersions on the vital capacity of Daphnia magna Straus crustaceans
by A.A. Lapin; M.L. Kalayda; V.V. Potapov; V.N. Zelenkov; N.L. Voropaeva
International Journal of Nanotechnology (IJNT), Vol. 15, No. 4/5, 2018

Abstract: This paper cites the results of measuring the influence of aqueous dispersions of nanosilica samples (separated from hydrothermal heat-transfer agent solutions at certain geothermal power plants) used for experimental and industrial purposes on the death-rate of Daphnia magna Straus. The results of the tests conducted in accordance with the approved procedure demonstrate that nanosilica at the concentration of less than 4 × 10-2 g/dm3 does not have toxic influence on Daphnia in the aqueous medium. This fact supports the ecological safety of Russian techniques for utilising nanodispersive silica of a hydrothermal origin in such spheres as plant growing (when plants are treated with nanosilica above the roots on the open-air soil) and production of new types of fish feed in interior and exterior reservoirs.

Online publication date: Sat, 15-Sep-2018

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