Simultaneous analysis of 137Cs, 90Sr, 238Pu and 239+240Pu in Brazilian seawater

被引:0
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作者
R. C. L. Figueira
E. S. B. G. Saraiva
I. I. L. Cunha
机构
[1] Universidade Cruzeiro do Sul – UNICSUL,
[2] Oceanographic Institute – IO-USP,undefined
[3] Radiochemistry Division – Instituto de Pesquisas Energéticas e Nucleares,undefined
关键词
Radionuclide; Plutonium; Seawater Sample; Minimum Detectable Concentration; 137Cs Level;
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摘要
Methodologies for simultaneous analysis of 137Cs, 90Sr, 238Pu and 239+240Pu were developed and applied to seawater samples. 137Cs levels in Brazilian coastal seawater ranged from 0.12 to 4.7 Bq·m-3, for 90Sr from 2.0 to 8.6 Bq·m-3, for 239+240Pu from 0.8 to 4.5 mBq·m-3 and for 238Pu it was of 1.9 mBq·m-3. The artificial radioactivity levels in Brazilian seawater are typical values due to fallout deposition.
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页码:801 / 804
页数:3
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