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冲绳海槽及东海表层海水中超铀元素钚的测定
李培泉1, 颜启民2, 于银亭1
1.中国科学院海洋研究所;2.中国科学院原子能研究所
摘要:
本文研究了东海及冲绳海槽海水中钚的含量与分布,这对于研究放射性污染问题很有意义。该区表层水中Pu的含量为1.2—2.6×10-5Bq/L,平均值为1.9×10-5Bq/L,Pu的分布随物理化学特性和海洋条件的不同而呈不均匀分布状态。Pu/137Cs为0.0036。浮游生物、海藻和生物悬浮体对Pu的浓缩能力很大。
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基金项目:
THE DETERMINATION OF PLUTONIUM IN SURFACE SEAWATER OF OKINAWA TROUGH AND EAST CHINA SEA
Abstract:
Study on the content and distribution of plutonium in Ocean is of importance for prevention of nuclear pollution. The concentration of Pu in surface seawater varies from 1.2 to 2.6 (10-5Bq/L) in Okinawa Trough and East China Sea, the mean value is about 1.9 X 10-5Bq/L. Generally, the pollution of Pu in the above area is not serious. It is not welldistributed because of different physical-chemical properties and oceanographic conditions. The ration of Pu/137Cs. is 0.0036. The concentration factor of Pu is very high in plankton, seaweed and biotic suspension substance. It’s C. F value varies from 103 to 105. So the pollution of Pu in biotics cannot be neglected.
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