Abstract：Fourteen surface sediment samples were collected from the inner Bohai Bay (Tianjin coastal sea) to measure particle size, heavy metal and radioactivity. The sediments were majorly silt-size and the particle size decreases southwards and eastwards in study area. The ranges of heavy metal concentrations were 25.6~35.1mg/kg, 44.1~67.7mg/kg and 60~73.5mg/kg for Cu, Pb, Zn, respectively. The radioactivities for 210Pb and 137Cs were 13.2~35.3Bq/kg and 0.05~1.28Bq/kg, respectively. Heavy metals concentration and radioactivity decreases with the increase of particle size, and generally increases both from north to south spatially. In particular, the level of heavy metals and radioactivity in the central and southern area increases southeastwardly and eastwardly, respectively. That might be due to the fact that the fine particles are more effective in adsorbing metals than coarse particles, and the surface sediment particle size distribution can be affected by flow in Bohai bay.
郁滨赫, 刘红磊, 卢学强, 王中良, 邵晓龙, 袁敏, 赵峰, 李小娟, 刘旭, 江文渊. 天津近岸表层沉积物重金属和放射性核素分布特征[J]. 中国环境科学, 2013, 33(6): 1053-1059.
YU Bin-He, LIU Hong-Lei, LU Xue-Qiang, WANG Zhong-Liang, SHAO Xiao-Long, YUAN Min, ZHAO Feng, LI Xiao-Juan, LIU Xu, JIANG Wen-Yuan. Characteristics of heavy metals and radionuclides in surface sediments from the inner Bohai Bay (Tianjin coastal sea).. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(6): 1053-1059.
