Environmental Radioactivity in Denmark in 1965

The present report deals with the measurement of foil-out radioactivity in Denmark in 1965. Sr-90 was determined in samples from all over the country of precipitation, soil, ground water, sea water, gran, dried milk, fresh milk, grain, bread, potatoes, vegetables, fruit, total diet, drinking water, and human bone.

Furthermore Sr-90 was determined in local samples of air, rain water, grass, sea plants, animal bone, fish, meat, and human milk. Cs-137 was determined in milk, grain products, potatoes, vegetables, fruit, total diet, pork, beef, and human milk samples, and Cs-187 was measured by whole-body counting in persons from a control group at Risø.

Estimates of the mean content of radiostrontium and radiocaesium the human diet la Denmark in 1068 are given. Finally the report includes, as previously, regular surveys of environmental samples from the Risø area.