226Ra and 228Ra in the Seawater of the Western Yellow Sea

被引：1
|
作者：
MEN Wu 1)
State Key Laboratory of Marine Environmental Science (Xiamen University)
机构：
来源：
JournalofOceanUniversityofChina | 2006年 / 03期
关键词：
the western Yellow Sea; 226Ra; 228Ra; γ-spectrometry; eddy coefficient;
D O I：
暂无
中图分类号：
P734.2 [海水化学];
学科分类号：
摘要：
Radium isotopes 226Ra and 228Ra in seawater of the western Yellow Sea were measured by using the Mn-fiber adsorption-HPGe γ spectrum method. The distribution features of the two isotopes have been studied. The activities of 226Ra and 228Ra are 2.72-5.57 Bq m -3 and 7.51-34.3 Bq m -3, respectively. The activities of 226Ra and 228Ra from surface to bottom for each depth profile station are comparable within the experimental error, but the mean activities decrease with distance from the shore. From the distribution data of 228Ra, the horizontal eddy diffusion coefficient was estimated at 29×106 cm2 s -1.
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页码：228 / 234
页数：7
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