کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1739214 | 1016838 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thorium accumulation in the sedimentary environment of the Vigo Ria (NW Iberian Peninsula)
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
Thorium levels and their association with Fe, Sc, Ca, and Particulate Organic Carbon (POC) were researched in sediments of the Vigo Ria in order to assess the influence of radioactive gneisses from the neighbouring continental Galiñeiro Complex. Sediment of 50 surface samples and 1 core was analysed by ICP-MS and the results were validated with certificate reference material from marine sediment. It was found that Th accumulates in the middle Ria zone (9-15 mg kgâ1) as a result of the terrestrial source. The thorium concentration in the Ria (average: 9.4 ± 5.1 mg kgâ1) is not anthropogenically impacted in accordance with its own regional background level (11.4 ± 3.5 mg kgâ1), which is two times higher than the content in earth's crust. Throughout the relationship Th/Fe, Th may be associated with the iron cycle in the Ria, probably through iron oxy-hydroxide scavenging.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 10, October 2008, Pages 1631-1635
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 10, October 2008, Pages 1631-1635
نویسندگان
Ana J. Marmolejo-RodrÃguez, Miguel Caetano, Ricardo Prego, Carlos Vale,