No abstract
During three field seasons (June--September) of 1997--99 contents of Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Al, Cr, Ni, Cd, and Pb were determined in compartments of ecosystem (surrounding soils, bottom sediments, water, zoobenthos, macrophytes, and fish) of a fish and recreation pond situated at the edge of Krasnoyarsk City (Siberia, Russia). Contents of most parts of metals in soils, water, and macrophytes significantly correlated with each other. As concluded, their contents were determined by natural, general, geochemical peculiarities of the region. Heavy metals, contents of which were higher than federal upper limits of concentration, were revealed. In muscles of fish with different feeding spectra--crucian and perch--concentrations of some metals differed significantly; correlation graphs for metals also had different structures. Comparison of our data with those on diverse aquatic ecosystems of Siberia, Europe, North America, and China published in the last decade was carried out. It was concluded that a distribution of heavy metals in the compartments of an aquatic ecosystem presently have to be determined for each particular water body until general regularities are discovered.
Статья посвящена оценке загрязнения техногенных поверхностных образований в условиях городской агломерации. Проведено сравнение загрязнения техногенных поверхностных образований тяжелыми металлами по предельно-допустимой концентрации. Исследование содержания тяжелых металлов проводилось на территориях, прилегающих к Красноярским теплоэлектроцентралям, паркам города. При проведении количественного анализа городских почв на наличие тяжелых металлов обнаружено повышенное содержание ряда тяжёлых металлов в почвах, из которых основными элементами, присутствующими в техногенных потоках загрязнения, являются свинец, цинк, медь, никель. Суммарное загрязнение по валовому содержанию тяжелых металлов показало, что наиболее загрязненной территорией является зона, прилегающая к ТЭЦ-2. Полученные результаты могут служить основой для дальнейших исследований на территории Красноярской агломерации, показана необходимость разработки критериев оценки загрязнения городских почв с учетом подвижных форм тяжелых металлов. Ключевые слова: тяжелые металлы, почвенный покров -техногенные поверхностные образования, агломерация, Красноярск. Krasnoyarsk, e-mail: emuchkina@yandex.ru The article is devoted to the estimation of contamination of technogenic surface formations in the conditions of city agglomeration is considered. Comparison of pollution of technogenic surface formations by heavy metals on maximum-permissible concentration is carried out. Research of content of heavy metals was conducted in the territories adjacent to Krasnoyarsk combined heat and power plants, parks of the city. When carrying out the quantitative analysis of city soils on availability of heavy metals the increased maintenance of a number of heavy metals in soils from which the basic elements which are present at technogenic streams of pollution are lead, zincum, copper, nickel is revealed. Cooperative pollution on the bulk content of heavy metals showed that the most polluted territory is the zone adjacent to combined heat and power plant-2. The received results can form a basis for further researches in the territory of Krasnoyarsk agglomeration, need of development of criteria for evaluation of pollution of city soils taking into account the relative frame forms of heavy metals is shown. Keywords: heavy metals, soil cover -technogenic surface formations, agglomeration, Krasnoyarsk. HEAVY METALS IN TECHNOGENIC SURFACE FORMATIONS OF KRASNOYARSK AGGLOMERATIONВ условиях крупных промышленных центров на функционирование экосистем и состояние их отдельных компонентов значимое влияние оказывает химическое загрязнение, источниками которого являются промышленные предприятия, автотранспорт и топливно-энергетический комплекс. Среди прочих поллютантов находятся соединения тяжелых металлов (ТМ), оказывающие влияние на качество природной среды. Почти все микроэлементы, являющиеся необходимыми для живых организмов, представлены тяжелыми металлами. Поступающие загрязнения из воздуха попадают на почвенный покров, водную поверхность, где в результате миграции аккумулируются и...
Two common fungicides: Vial TrasT (60 g/l tebuconazole and 80 g/l thiabendazole) and Oplot (90 g/l difenoconazole and 45 g/l tebuconazole) were tested for effectiveness against seed-borne toxigenic fungi Fusarium spp. and Alternaria spp. using naturally infected wheat (Triricum aestivum L., cultivar Novosibirskaya-14) seeds collected from the field located near Krasnoyarsk, Russia. Treatment with Oplot statistically significantly reduced Fusarium infection by 10 percentage points (from 31.4% to 21.4%) and statistically significantly reduced Alternaria infection by 25.8 percentage points (from 42.9% to 17.1%). Treatment with Vial TrasT demonstrated no statistically significant effect in reducing infection both for Fusarium and Alternaria. The results demonstrates that populations of Fusarium spp. and Alternaria spp. in Middle Siberia have developed resistance to tebuconazole and thiabendazole, but not to difenoconazole.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.