Metals were measured in the biogenic detritus that accumulated over 8 months in the microcosms with Viviparus viviparus and Ceratophyllum demersum. Their concentrations were measured using atomic absorption spectroscopy (AAS). The concentrations decreased in the order: Fe > Mn > > Zn > Cu > Pb > Cd > >Cr. Following the addition of the metals (Fe, Mn, Zn, Cu, Cd, Cr) into the water of the microcosm, those metals were found in the sedimented detritus at concentrations higher than in the control. The most pronounced increase was found for Cd (the increase by the factor of over 3), and for Cr (the increase by the factor of over 100). The new data confirm the recent theory of the polyfunctional role of the biota in water quality control and water selfpurification. Keywords: monitoring, water systems, heavy metals, detritus, freshwater microcosms, aquatic organisms. микрокосмы, Microcosms, тяжелые металлы, биогенный, детрит, Viviparus viviparus, Ceratophyllum demersum, Fe, Mn, Zn, Cu, Cd, Cr, биогеохимия, модельная водная система,
2010, № 2, с. 53-56.

http://scipeople.ru/publication/118623/; Toxicity of Gold Nanoparticles for Plants in Experimental Aquatic System S. A. Ostroumov, V. A. Poklonov, S. V. Kotelevtsev, and S. N. Orlov Department of Biology, Moscow State University, Moscow, Russia email: ostroumov@mail.bio.msu.ru Received April 10, 2013 Abstract: Increased production and use of nanomaterials can lead to new types of pollution of the environment, including aquatic ecosystems. Pollution of the aqueous environment with nanoparticles can be a new type of pollution of the environment. This requires a more detailed study of the biological effects during exposure of nanoparticles on aquatic organisms. The interactions of gold nanoparticles (Au) with aquatic macrophytes Ceratophyllum demersum have been studied. Aquatic microcosms with these plants were used. Gold nanoparticles (Au) were added to the aqueous medium of C. demersum macrophyte containing microcosms. The state of the plants was then analyzed. Phytotoxicity of Au nanoparticles for aquatic macrophytes was shown for the first time. A new method of phytotoxicity detection was suggested and successfully approved. Phytotoxicity at a concentration of Au (in the form of nanoparticles) of 6 . 10–6 M–1.8 . 10–5 M was shown. Original Russian Text © S.A. Ostroumov, V.A. Poklonov, S.V. Kotelevtsev, S.N. Orlov, 2014, published in Vestnik Moskovskogo Universiteta. Biologiya, 2014, No. 3, pp. 19–23. Keywords: hydrobionts, aquatic, microcosms, macrophytes, nanoparticles, Au, Ceratophyllum demersum, gold, toxicity, phytotest, phytotoxicity, nanomaterials, nanotoxicity, nanotechnology DOI: 10.3103/S0096392514030080
ISSN 0096-3925, Moscow University Biological Sciences Bulletin, 2014, Vol. 69, No. 3, pp. 108–112. © Allerton Press, Inc., 2014.

http://scipeople.ru/publication/69766/; Ostroumov S. A., Kolesov G. M. The aquatic macrophyte Ceratophyllum demersum immobilizes Au nanoparticles after their addition to water. - Doklady Biological Sciences, 2010, Vol. 431, pp. 124–127. http://scipeople.com/publication/69766/ [© Pleiades Publishing, Ltd., ISSN 0012-4966]. Original Russian Text © S.A. Ostroumov, G.M. Kolesov, 2010, published in Doklady Akademii Nauk, 2010, Vol. 431, No. 4, pp. 566–569. Bibliogr. 15 refs. Presented by Academician M.A. Fedonkin July 31, 2009. DOI: 10.1134/S0012496610020158. 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 macrophyte, Ceratophyllum demersum. The concentrations of Au were measured in the samples of the phytomass of the macrophyte using neutron activation analysis (NAA). As a result of the binding and/or immobilization of the nanoparticles, the amount of Au 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. Also, the result added new information to the studies of interactions of Au with organisms that may contribute to new biotechnologies. Key words: phytomass, biomass, aquatic macrophytes, plants, phytotechnologies, vegetation, biogenic migration of elements, aquatic microcosms, accumulation, nanoparticles, self-purification, neutron activation analysis, NAA, microcosms, gold, Au, immobilization, binding, Ceratophyllum demersum ISSN 0012-4966, Doklady Biological Sciences, 2010, Vol. 431, pp. 124–127. © Pleiades Publishing, Ltd., 2010. Original Russian Text © S.A. Ostroumov, G.M. Kolesov, 2010, published in Doklady Akademii Nauk, 2010, Vol. 431, No. 4, pp. 566–569. The Aquatic Macrophyte Ceratophyllum demersum Immobilizes Au Nanoparticles after Their Addition to Water S. A. Ostroumov (a) and G. M. Kolesov (b) Presented by Academician M.A. Fedonkin. DOI: 10.1134/S0012496610020158 a Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, 119991 Russia b Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul.Kosygina 19, Moscow, 119991 Russia Study of biogenic migration of elements is an important line of biosphere research [1–8]. Biogenic migration of elements in aquatic ecosystems, both freshwater and saltwater, is important for water self- purification and quality formation [9–11]. Data on element accumulation and binding by aquatic organisms, including macrophytes, are important for analyzing the organisms’ important role in biogenic migration of elements in aquatic ecosystems. The concentrations of some elements were determined earlier in different biogenic samples, including hydrobionts and biogenic detrital substances [9, 10]. However, these data were based on a limited set of organisms and elements. There are no published data on either gold (Au) content in Ceratophyllum demersum L. or interaction between Au nanoparticles and aquatic macrophytes. The goal of this work was to study the immobilization of Au nanoparticles added to the water medium of microcosms in the presence of macrophyte hydrobionts C. demersum L.
Doklady Biological Sciences, 2010, Vol. 431, pp. 124–127. [© Pleiades Publishing, Ltd., ISSN 0012-4966].

Соломонова Е. А., Остроумов С. А. «Воздействие додецилсульфата натрия на биомассу макрофитов Najas guadelupensis L.» // Токсикологический вестник. 2009. № 2. с.32-35. Библиогр.10 назв. Микрокосмы с макрофитами изучали в лабораторных экспериментах. исследовали воздействие додецилсульфата натрия (ДСН) на макрофиты. Регистрировали выживаемость и вес биомассы макрофитов в условиях длительной инкубации. ДСН вносили в форме неоднократных (повторяющихся, рекуррентных) добавок. Количество ДСН, внесенное в 1 дм3 после каждой добавки составляло: 0,5, 0,8, 1,7, 8,3, 16,7, 50,0 и 100,0 мг. Длительность периода выживания растений снижалась при увеличении количества ДСН, вносимого в одной добавке. Если количество вносимого ДСН (в одной добавке) увеличивали в 200 раз (с 0,5 до 100 мг/л), то период выживания снизился в 53 раза (с 372 до 7 дней). В присутствии ДСН произошло некоторое снижение биомассы макрофитов. Степень снижения биомассы зависела от суммарного количества внесенного ДСН. Solomonova E.A., Ostroumov S.A. Effects of sodium dodecyl sulphate on the biomass of macrophytes Najas guadelupensis L. / / Toksikologicheskiy Vestnik. 2009. Number 2. P.32-35. Bibliogr.10 refs. Microcosms with the macrophytes were studied in laboratory experiments. The effects of sodium dodecyl sulphate (SDS) on macrophytes were studied . The survival and weight of the biomass of macrophytes in a prolonged incubation were recorded. SDS was added in the form of repeated (recurrent) additives. The increase in the amount of SDS after each addition was: 0,5, 0,8, 1,7, 8,3, 16,7, 50,0 and 100,0 mg in 1 dm3. Duration of survival of plants decreased with increasing amount of SDS in one addition. If the amount of SDS (after a single addition) increased 200 times (from 0.5 to 100 mg / l), the period of survival decreased 53-fold (from 372 up to 7 days). In the presence of SDS, a decrease in macrophyte biomass was observed. The degree of the reduction of biomass depended on the total amount of SDS added to the microcosms.
Соломонова Е. А., Остроумов С. А. «Воздействие додецилсульфата натрия на биомассу макрофитов Najas guadelupensis L.» // Токсикологический вестник. 2009. № 2. с.32-35.