随着核能工业的发展,沿海核电站的建立,人们对海洋,尤其是港口、近海的放射性污染越来越重视。国内外对此进行了大量的调查研究,近年来我国对近海的放射性污染也进行了一些调查。由于海水中放射性物质含量较低,易受沿岸河流和海流的影响,因此不能全面反映区域的放射性污染水平。港口和近海是咸淡水混合区,海水水化学作用比较频繁,沿 With the development of nuclear energy industry and the establishment of coastal nuclear power plants, people pay more and more attention to radioactive pollution in the sea, especially in the harbor and offshore areas. A large number of investigations have been carried out at home and abroad. In recent years, some investigations have also been carried out on the radioactive pollution of the coastal areas in China. Due to the low level of radioactive substances in seawater and their vulnerability to coastal rivers and currents, the level of radioactive pollution in the area can not be fully reflected. The port and offshore are a mixture of brackish water and fresh water, with more frequent chemical effects of seawater