Russian Journal of General Chemistry, most recent publications of Sergei Ostroumov,
environmental science, water quality, bioassay of chemicals, toxicity, detritus, detoxification of biosphere, biomachinery of water self-purification,
https://5bio5.blogspot.com/2018/08/rj.html
**Toxicity testing of chemicals without use of animals
Russian Journal of General Chemistry (2016-12-01) 86: 2933-2941 , December 01, 2016
Post to Citeulike A series of publications on the studies of phytotoxicity of chemicals (pollutants, ecotoxicants), carried out by the author and his research group, have been reviewed. Tests (bioassays) based on experiments with many higher plant species, both terrestrial and aquatic ones (macrophytes), were used in these studies. Among the chemicals tested there were various organic (synthetic detergents, surfactants, and pesticides) and some inorganic (e.g., metal oxide nanoparticles) compounds. New methods for bioassay using plant species never used before have been developed by the author. New facts of phytotoxicity of a synthetic detergent have been discovered and reported. Specifically, an aqueous solution of liquid detergent Frosch (Werner & Mertz, FRG) at a concentration of 0.25 mL/L (and higher concentrations) inhibited the elongation rate of seedlings of Lens culinaris higher plant species. Also, phytotoxicity of synthetic cationic surfactant dodecyltrimethylammonium bromide has been reported for the first time. This surfactant at a concentration of 4 mg/L inhibited the elongation of Lens culinaris plant seedlings. The phytotesting methods contribute to the development of alternative approaches to studying the toxicity of chemicals through non-animal testing.
New Aspects of the Role of Organisms and Detritus in the Detoxification System of the Biosphere
Russian Journal of General Chemistry (2017-12-01) 87: 3190-3198 , December 01, 2017
The review covers new aspects of the participation of organisms in the detoxification system of the biosphere. Problems of detoxification of toxic environmental pollutants are analyzed. New author’s experimental data in combination with a large amount of information in the scientific literature gave rise to a new concept of the role of biogenic detritus and related nutrients in environmental detoxification (ex-living matter concept). This may be useful for the development of new technologies for remediation and decontamination of the environment.
Water Quality and Conditioning in Natural Ecosystems: Biomachinery Theory of Self-Purification of Water
Russian Journal of General Chemistry (2017-12-01) 87: 3199-3204 , December 01, 2017
General principles of the theory of polyfunctional role of biota in self-purification of water in aquatic ecosystems have been formulated. The theory includes the following elements: (1) energy sources for self-purification of aquatic ecosystems; (2) main functional units of the self-purification system; (3) main selfpurification processes; (4) contributions of major taxa to self-purification of aquatic ecosystems; (5) reliability of the system and mechanisms ensuring it; (6) self-regulation of biota; (7) response of the system to external stimuli (impacts); (8) analogy between an ecosystem and a bioreactor; (9) conclusions for nature conservation practice. The theory covers both freshwater and marine ecosystems.
Biocontrol of water quality: Multifunctional role of biota in water self-purification
Russian Journal of General Chemistry (2010-12-01) 80: 2754-2761 , December 01, 2010
The experimental data analysis, concepts, and generalizations in this article provide the fundamental elements of the qualitative theory of biocontrol of water quality in a systematized form. The theory covers water self-purification in freshwater and marine ecosystems. The theory is supported by the results of the author’s experimental studies of the effects exerted by some chemical pollutants including synthetic surfactants, detergents, and other xenobiotics onaquatic organisms. The theory provides a basis for remediation of polluted aquatic ecosystems including purification of water bodies and streams, and briefly present the qualitative theory of the self-purification mechanism of aquatic ecosystems, phytoremediation and other types of technologies.
Issues of the Study of Detritus in Aquatic Systems
Russian Journal of General Chemistry (2017-12-01) 87: 3244-3249 , December 01, 2017
**