Radionuclide concentration in ground level air from 1974 to 1977 in North Germany and North Norway
Description
The activity concentrations of various fission products and some other radionuclides contained in surface air have been determined by gamma ray spectrometry. Fresh fission products have been detected after each of the Chinese atmospheric nuclear explosions. The mean monthly activity concentrations of 13 radionuclides measured between 1974 and 1977 in Brunswick and at two sampling stations in North Norway (Tromsoe and Skibotn) are tabulized. On an average the annual mean values for Tromsoe and Skibotn were 63% and 49% respectively of those estimated for Brunswick. The mean annual dose-equivalent to the lung due to inhalation of aerosols has been estimated to 17 μSv for Brunswick, 11 μSv for Tromsoe and 6.9 μSv for Skibotn and is caused predominantly by the naturally occuring radionuclide 210Pb. The contribution of fission products from Chinese tests was in the order of 10% only. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Die Aktivitaetskonzentrationen einer Reihe von Spaltprodukten und einiger weiterer, in der bodennahen Luft enthaltender Radionuklide wurden gammaspektrometrisch bestimmt. Nach jedem Kernwaffenversuch, der von der Volksrepublik China in der Atmosphaere durchgefuehrt wurde, konnten frische Spaltprodukte nachgewiesen werden. Monatsmittelwerte der Aktivitaetskonzentration von 13 Radionukliden wurden fuer die Jahre 1974 bis 1977 und die drei Probenahmestellen Braunschweig, Tromsoe und Skibotn (Nordnorwegen) tabellarisch zusammengestellt. Im Durchschnitt betragen die Jahresmittelwerte fuer Tromsoe 63% und fuer Skibotn nur 49% der fuer Braunschweig ermittelten Werte. Die durch Inhalation der Aerosole bedingte Lungen-Aquivalentdosis betrug im Jahr durchschnittlich 17 μSv in Braunschweig, 11 μSv in Tromsoe und 6,9 μSv in Skibotn. Den weitaus hoechsten Beitrag lieferte das langlebige Radon-Folgeprodukt Blei-210, nur etwa 10% trugen die Spaltprodukte aus Kernwaffenversuche bei. (orig.)
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Additional details
Publishing Information
- Imprint Pagination
- 70 p.
- Report number
- PTB-Ra--9
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 10448449
- Subject category
- S58: GEOSCIENCES; S61: RADIATION PROTECTION AND DOSIMETRY;
- Descriptors DEI
- DOSE EQUIVALENTS; FALLOUT DEPOSITS; FISSION PRODUCTS; GAMMA SPECTROSCOPY; GROUND LEVEL; INHALATION; LEAD 210; LUNGS; NATURAL RADIOACTIVITY; NUCLEAR EXPLOSIONS; RADIOACTIVE AEROSOLS; SURFACE AIR
- Descriptors DEC
- AEROSOLS; AIR; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; COLLOIDS; DISPERSIONS; EVEN-EVEN NUCLEI; EXPLOSIONS; FALLOUT; FLUIDS; GASES; HEAVY NUCLEI; INTAKE; ISOTOPES; LEAD ISOTOPES; LEVELS; NUCLEI; ORGANS; RADIOACTIVE MATERIALS; RADIOACTIVITY; RADIOISOTOPES; RESPIRATORY SYSTEM; SOLS; SPECTROSCOPY; YEARS LIVING RADIOISOTOPES