Activity Level and Diltribution of 137Cs in Ground Surface of Anhui Province
安徽省地表137Cs的活度水平与分布特征

The sampling points were distributed evenly all over Anhui Province where 222 samples of surface soil were collected and their activities of 137Cs determined. The results showed that an average activity of 137Cs is 5 56 Bq/kg in the province. The activity levels in southern mountainous areas are higher than those in northern plain. Its high value belt runs basically from northwest to southeast. It trends to be higher along both sides of the mountains.