黄河下游及河口区超铀元素Pu的浓度测定  

CONCENTRATION OF Pa IN SURFACE SEDIMENT IN LOWER REACH AND ESTUARY OF HUANGHE RIVER

作　　者：李培泉[1] 于银亭[1] 颜启民 

机构地区：[1]中国科学院海洋研究所,青岛266071 [2]中国科学院原子能研究院,北京102413

出　　处：《海洋科学》1991年第1期47-51,共5页Marine Sciences

摘　　要：本文测定研究了黄河口及下游区表层沉积物中的Pu浓度。结果表明,该区表层沉积物中存在微量的Pu污染;黄河口的Pu浓度高于下游区;该区的Pu,^(137)Cs两个同位素有相似的变化规律。The contents of Pu in surface sediment in lower reach and estuary of Huanghe River was determined by using spectrometer and low background counter in 1984. The mean concentration of Pu is about 1.2 fCi/g (4.4×10-5 Bq/g) in lower reach of Huanghe River and 2.6 fCi/g (9.6×10-5 Bq/g) in estuary of Huanghe River. The pollution of Pu in these areas is much less compared with other areas of the globe. The contents of Pu in the investigated regions is basically uniform. The mean ratios of Pu/l37Cs in sediments is 0.015 in lower reach and 0.017 in estuary of Huanghe River. The motion character of Pu in estuary of Huanghe River and other region is also discussed. Pu is easily deposited in sediment due to its Particle-Reactive character.

关 键 词：铀 元素 PU 浓度 黄河 河口区 

分 类 号：P734.24[天文地球—海洋化学]