137Cs in the population in inland north Sweden

Whole-body measurements off 134Cs and 137Cs were performed on samples of the population at three localities in northern Sweden, that suffered different degrees of contamination at the Chernobyl accident. The localities all have significant populations of lapps, who due to their high intake of reindeer-meat have much higher levels of Cesium than the population in general. It was found that; the mean whole-body content of 137Cs is ten times higher for lapps than for the general population in areas with high contamination; the ratio between the whole-body content and the ground contamination is lower in areas with high contamination, indicating that mitigation measures have had effect; measurements on urine samples can be used to get a quick estimate of the mean 137Cs concentration of a population group. Results from the measurements are presented in several tables