Determination of 228Ra and 226Ra in Seawater Collected on Manganese-Impregnated Acrylic Fiber
نویسندگان
چکیده
منابع مشابه
226Ra and 228Ra in Croatian rivers.
The presence of natural radionuclides in Croatian rivers emphasizes the need for its continuous monitoring. Therefore results of 226Ra and 228Ra determination in Croatian river waters are presented in this paper. 226Ra and 228Ra were chosen as a possible source of human exposure due to their high radio-toxicity. Fifty liters of river water samples were collected from the Danube, Drava, Sava, Kr...
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O presente trabalho apresenta os resultados de Ra e Ra obtidos durante o 4 experimento de intercomparação referente à descarga submarina de água subterrânea (Submarine Groundwater Discharge, SGD) realizado em Ubatuba (SP), em novembro/2003. Este experimento visava testar, em um sistema de rochas cristalinas fraturadas, as diferentes metodologias existentes de determinação da SDG. Embora com obj...
متن کاملDetermination of 226Ra and 228Ra concentrations in foodstuffs consumed by inhabitants of Tehran city of Iran
ABSTRACTBackground : The presence of primordial radionuclide in human habitats has always been a source of prolonged exposure. Measurement of naturally occurring radionuclides in the environment can be used as baseline to evaluate the impact of non-nuclear activities and also routine releases from nuclear installations. Materials and methods: A total of 56 samples from 18 different foodstuf...
متن کاملCollection of Radium Isotopes in Natural Waters by Manganese-Impregnated Acrylic Fiber
An attempt was made to apply Mn-impregnated acrylic fiber to the collection of small amounts of Ra isotopes in natural waters. The Mn compound incorporated in this material was estimated to be KMn8O16•E H2O, which occurred naturally in Japan as cryptomelane. Collection by the Mn-impregnated acrylic fiber was effective in the pH region higher than 4 and the collecting efficiency was dependent on...
متن کامل228Ra/226Ra and 226Ra/Ba ratios in the Western Mediterranean Sea : barite formation and transport in the water column
Ra, Ra and Ba distributions as well as Ra/Ra and Ra/Ba ratios were measured in seawater, suspended and sinking particles at the DYFAMED station in the Western Mediterranean Sea at different seasons of year 2003 in order to track the build-up and fate of barite through time. The study of the Raex/ Raex ratios (Raex = Ra activities corrected for the lithogenic Ra) of suspended particles suggests ...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 2006
ISSN: 1884-4111,0033-8303
DOI: 10.3769/radioisotopes.55.443