Results 11 to 20 of about 14,731 (317)

A sensitive method to determine 210Po and 210Pb in environmental samples by alpha spectrometry using CuS micro-precipitation [PDF]

Scientific Reports, 2023
A new sensitive method to determine polonium-210 (210Po) and lead-210 (210Pb) in a diversity of environmental samples was developed. For fresh and marine waters, Po was pre-concentrated using a titanium (III) hydroxide (Ti(OH)3) co-precipitation.
Stephanie Walsh, Matthew J. Bond, Nicolas Guérin, Jules M. Blais, David J. Rowan   +4 more
doaj   +2 more sources

Utilization of Soot and 210 Po-210 Pb Disequilibria to Constrain Particulate Organic Carbon Fluxes in the Northeastern South China Sea

Frontiers in Marine Science, 2021
Black carbon (BC) is believed to be refractory and thus affects the timescale of organic carbon conversion into CO2 and the magnitude of the sink of CO2. However, the fate of BC in the oceans remains poorly understood. Here, 210Po and 210Pb were measured
Weifeng Yang, Weifeng Yang, Xiufeng Zhao, Xiufeng Zhao, Laodong Guo, Bangqin Huang, Bangqin Huang, Min Chen, Ziming Fang, Xiao Zhang, Yusheng Qiu   +10 more
doaj   +1 more source

Estimasi Dosis Radiasi 210Po pada Ikan Laut Konsumsi dari Perairan Banda Aceh

Jurnal Kelautan Tropis, 2021
The main idea of this study is to calculate 210Po activity in marine biota from Banda Aceh waters and calculate dose estimates for marine biota consumers.
Risa Chintia Balqis, Febriani Febriani, Murdahayu Makmur   +2 more
doaj   +1 more source

Multi-Physics Model Development for Polonium Transport Behavior in a Lead-Cooled Fast Reactor

Frontiers in Energy Research, 2021
210Po, a highly toxic element with strong volatility, is one of the main source terms of a Gen-IV lead-cooled fast reactor (LFR). Therefore, the radioactive safety caused by 210Po has become an important topic in LFR-related research.
Deng Lilin, Wang Yuqing, Zhai Zian, Huang Bochen, Wu Jiewei, Wu Jiewei, He Jianbo, Ni Muyi, Ni Muyi   +8 more
doaj   +1 more source

Dose assessment for polonium-210 (Po-210) in New Zealand shellfish.

Journal of Environmental Radioactivity, 2021
Worldwide, Po-210 is an important contributor to human ionising radiation exposure through food. To characterise the ionising radiation dose for New Zealanders from Po-210 in shellfish, a dose assessment was undertaken.
Sarah Guy, S. Gaw, S. Beaven, Andrew J. Pearson   +3 more
semanticscholar   +1 more source

Activity Levels of 210Po, 210Pb and Other Radionuclides (134Cs, 137Cs, 90Sr, 110mAg, 238U, 226Ra and 40K) in Marine Organisms From Coastal Waters Adjacent to Fuqing and Ningde Nuclear Power Plants (China) and Radiation Dose Assessment

Frontiers in Marine Science, 2021
With the rapid development of nuclear power, the radiation impacts on edible marine organisms, and the potential radiation risks to humans have become of considerable concern to public health.
Jiang Sun, Jiang Sun, Wu Men, Wu Men, Fenfen Wang, Junwen Wu, Junwen Wu   +6 more
doaj   +1 more source

Occurrence and Geochemistry of Lead-210 and Polonium-210 Radionuclides in Public-Drinking-Water Supplies from Principal Aquifers of the United States.

Environmental Science and Technology, 2020
On the basis of lifetime cancer risks, lead-210 (210Pb) and polonium-210 (210Po) ≥ 1.0 and 0.7 pCi/L (picocuries per liter), respectively, in drinking-water supplies may pose human-health concerns.
Z. Szabó, P. Stackelberg, C. Cravotta
semanticscholar   +1 more source

Measurement of activity concentration of polonium-210 in species of the phylum mollusca, Tabasco, Mexico

PROCEEDINGS OF THE XVI MEXICAN SYMPOSIUM ON MEDICAL PHYSICS, 2021
The activity concentration of polonium-210 in the soft tissue of several species of mollusks of coastal areas from Tabasco, Mexico, has been determined. Polonium-210 is a natural radionuclide that may be bioaccumulated by flora and fauna, particularly by
C. D. Mandujano-García, A. R. Nava-Huerta, P. Ardisson, J. H. Garcia, I. Vioque, R. García‐Tenorio   +5 more
semanticscholar   +1 more source

Focus presuppositions [PDF]

, 2008
This paper reviews notions related to focus and presupposition and addresses the hypothesis that focus triggers an existential presupposition. Presupposition projection behavior in certain examples appears to favor a presuppositional analysis of focus ...
Abusch, Dorit
core   +1 more source

Levels of Polonium-210 in brain and pulmonary tissues: Preliminary study in autopsies conducted in the city of Sao Paulo, Brazil

Scientific Reports, 2020
The accumulation of detectable amounts of radon progeny in human tissues may be a risk factor for development and progression of chronic diseases. In this preliminary study, we analyzed the levels of alpha-emitting radon progeny Polonium-210 (210Po) in ...
N. V. Santos, C. Vieira, P. Saldiva, Barbara Paci Mazzilli, M. Saiki, Catia Heloisa Saueia, C. D. D. de André, L. Justo, M. Nisti, P. Koutrakis   +9 more
semanticscholar   +1 more source