Environmental radioactivity in Denmark in 1980

Strontium-90 was determined in samples from all over the country of precipitation, ground water, drinking water, sea water, dried milk, grain, bread, potatoes, vegetables, fruit, total diet, and human bone. Furthermore, ⁹⁰Sr was determined in local samples of air, rain water, soil, sediments, grass, sea plants, fish and meat. Cesium-137 was determined in air, precipitation, sea water, lake water, sediments, milk, grain products, potatoes, vegetables, fruit, total diet, sea plants, fish, and meat. Estimates of the mean contents of radiostrontium and radiocesium in the human diet in Denmark during 1980 are given. Tritium was determined in precipitation, fresh water and sea water. Plutonium and Americium were measured in sea water sediments, sea plants and mussels. The Y-background was measured regularly by TLD, ionization chamber and on site Y-spectroscopy at locations around Risø, at ten of the State experimental farms along the coasts of the Great Belt and around Gyllingnæs. The marine environments at Barsebåck and Ringhals were monitored for *37Cs and corrosion products (58Co, 60Co, 65Zn, 54Mn). Finally the report includes routine surveys of environmental samples from the Risø area.