| Инд. авторы: | Artamonova S. |
| Заглавие: | Uranium in aerosol of nuclear fuel cycle enterprises region (Novosibirsk, Russia) |
| Библ. ссылка: | Artamonova S. Uranium in aerosol of nuclear fuel cycle enterprises region (Novosibirsk, Russia) // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2015. - Vol.1. - Iss. 5. - P.985-992. - ISSN 1314-2704. |
| Внешние системы: | SCOPUS: 2-s2.0-84946836403; WoS: 000370813400131; |
| Реферат: | eng: Results of the mineralogical and geochemical investigation of technogenic aerosol of the Novosibirsk Chemical Concentrates Plant (NCCP) area are discussed. Nuclear fuel elements are main product of the NCCP. Because of solid and gaseous aerosols particles are fixed in snow cover since November till March, the precipitation of snow is studied. Snow samples are taken along the route to the northeast from NCCP accordingly wind rose. Method of mass spectrometry with inductively coupled plasma is used. The morphology and composition of aerosol particles are studied on a help of LEO 1430 VP scanning electron microscope. The aerosol of NCCP plume is revealed to be enriched with U (till 9.9 ppm), Th (till 16.1 ppm), whereas background concentration of U and Th is equal 2.7 ppm and 8.3 ppm accordingly. The Th/U ratio decreases till 1.6 whereas background Th/U ratio is equal 3.1. These aerosol is revealed for the first time to be enriched with235U, so the average isotope ratio238U/235U is 105.6, minimal238U/235U is 77.43 (whereas natural ratio238U/235U is 138). In the aerosol sample at a distance of 43.4 km from NCCP238U/235U ratio is 122.1. In the aerosol of NCCP plume the particles of uranium oxides are found for the first time by means of scanning electron microscopy. The particles of 3-64 mm2 in surface size often are adhered to aluminosilicate particles or hollow spheroids, what provides higher mobility of them for long-range wind transport. Uranium content in these aerosol particles varies within the range from 33.83 to 78.80%, Fe and Cu admixtures account for 3.19 and 1.23%, respectively. Thus, the NCCP emission is revealed to pollute air at a distance up to 43.4 km to northeast. The NCCP fallout predetermines the geochemical specificity of technogenic aerosol, and Th/U ratio, isotope238U/235U ratio, particles of uranium oxides are indicators of NCCP emission. © SGEM2015. |
| Ключевые слова: | Aerosols; Uranium contents; Nuclear fuel cycles; Morphology and composition; Geochemical investigations; Background concentration; Aluminosilicate particles; Aerosols particles; Aerosol particles; Uranium; Spectrometry; Snow; Scanning electron microscopy; Nuclear fuel reprocessing; Nuclear fuel elements; Mass spectrometry; Isotopes; Industrial emissions; Inductively coupled plasma; Geochemistry; Uranium; Snow; Scanning electron microscope; Mass spectrometry with inductively coupled plasma; Industrial emission; Aerosol; |
| Издано: | 2015 |
| Физ. характеристика: | с.985-992 |
| Конференция: | Название: 15th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2015 Даты проведения: 2015-06-18 - 2015-06-24 |