Effects of carbon and silicon nanotubes and carbon nanofibers on marine microalgae Heterosigma akashiwo.

Autor: Pikula KS; Far Eastern Federal University, Vladivostok, Russian Federation., Zakharenko AM; Far Eastern Federal University, Vladivostok, Russian Federation. Electronic address: zakharenko.am@dvfu.ru., Chaika VV; Far Eastern Federal University, Vladivostok, Russian Federation., Vedyagin AA; Boreskov Institute of Catalysis, Novosibirsk, Russian Federation., Orlova TY; A.V. Zhirmunsky Institute of Marine Biology of the Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia., Mishakov IV; Boreskov Institute of Catalysis, Novosibirsk, Russian Federation., Kuznetsov VL; Boreskov Institute of Catalysis, Novosibirsk, Russian Federation., Park S; Inha University, Incheon, Republic of Korea., Renieri EA; Laboratory of Toxicology, Medical School, University of Crete, Heraklion, Greece., Kahru A; National Institute of Chemical Physics and Biophysics, Tallinn, Estonia; Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia., Tsatsakis AM; Laboratory of Toxicology, Medical School, University of Crete, Heraklion, Greece., Golokhvast KS; Far Eastern Federal University, Vladivostok, Russian Federation; Pacific Geographical Institute FEB RAS, Vladivostok, Russian Federation.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2018 Oct; Vol. 166, pp. 473-480. Date of Electronic Publication: 2018 Jun 26.
DOI: 10.1016/j.envres.2018.06.005
Abstrakt: The effect of carbon and silicon nanotubes (CNTs and SiNTs) and carbon nanofibers (CNFs) to microscopic marine algae Heterosigma akashiwo was studied, using algal growth inhibition for 3 days (acute effect) and 7 days (chronic effect) as toxicity endpoints. The criterion of the toxic effect was the statistically significant reduction of the number of algal cells in the exposed samples compared to the control. Samples did not demonstrate toxic effects at doses 1 mg/l and 10 mg/l. CNTs and SiNTs samples at 100 mg/l exhibited both acute and chronic toxic effects. We assume that the main cause of cell death in these samples was related to the mechanical damage of cell integrity. CNFs at concentrations of 100 mg/l did not inhibit algal growth, but cells with irregular shapes were observed, which were not observed after exposure to CNTs and SiNTs. Nickel impurities present in CNFs samples are presumably the main cause of observed cell deformations.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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