Low level air radioactivity measurements in Prague,Czech Republic |
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| Institution: | 1. National Radiation Protection Institute, Barto?kova 28, 140 00 Prague, Czech Republic;2. DRD, Nuclear Physics Institute AS CR, Na Truhlá?ce 64, 180 86 Prague, Czech Republic;1. Physics Department – Faculty of Science, Minia University, Minia, Egypt;2. Ural Federal University, Mira Street 19, 620002 Yekaterinburg, Russia;1. Nuclear Physics Institute AS CR, Na Truhlá?ce 39/64, CZ-18086 Prague, Czech Republic;2. National Radiation Protection Institute, Barto?kova 1450/28, CZ-14000 Prague, Czech Republic;1. National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan;2. High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan |
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| Abstract: | Activity concentrations of radionuclides in the atmosphere have been monitored for over 21 years in the Czech Republic, at present at 10 sampling sites. Results of long-time observation of the radionuclides 137Cs, 7Be, 210Pb, 22Na, 40K, 238Pu, 239,240Pu, 90Sr, 85Kr and 14C and statistical analysis of the data from the monitoring site in Prague are given in the paper. In 2007 mean activity concentrations of monitored radionuclides at Prague monitoring site in Bq/m3 were: 85Kr, 1.6×10+0; 14C, 5.3×10?2; 137Cs, 6.8×10?7; 7Be, 4.3×10?3; 210Pb, 5.3×10?4; 40K, 1.8×10?5; 22Na, 3.5×10?7; 90Sr, 5–7×10?8; 238Pu, 1–2×10?10 and 239,240Pu, 1.7×10?9. |
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