%0 Journal Article
%T Study on vertical migration of 137Cs in marine sediment of Daya Bay<br>大亚湾沉积物中137Cs纵向迁移研究
%A CHEN Jiajun
%A ZHANG Junli
%A LI Yuanxin
%A HUANG Naiming
%A <br>陈家军
%A 张俊丽
%A 李源新
%A 黄乃明
%J 环境科学学报
%D 2003
%I 
%X As a long\|lived and critical artificial radionuclid, 137 Cs from GNPS(Guangdong Nuclear Power Station) plays an important role in the study of monitoring and assessing marine radioactivity in Daya Bay. Marine sediment is the final repository for 137 Cs in marine environment. The study on vertical migration of 137 Cs in marine sediment is important to make proper assessment for radionuclides impact on Daya Bay from GNPS. A quantitative vertical migration model for radionuclides in sediment presented in the paper. The mechanism of transport happened in the sediment\|water interface through sedimentation, diffusion and sorption\|desorption, etc. is taken into account comprehensively. The modeling analysis was conducted on the migration and distribution of 137 Cs versus the depth based on data of 4 samples of sediment cores, and the trend of 137 Cs migration and accumulation in the future was predicted.
%K 137
%K Cs
%K Daya Bay
%K marine sediment
%K vertical migration
%K numerical simulation<br>大亚湾
%K 沉积物
%K ^137Cs
%K 纵向迁移
%K 海洋
%K 放射性污染物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=3A1FF6A7360F73FB&yid=D43C4A19B2EE3C0A&vid=EA389574707BDED3&iid=E158A972A605785F&sid=08076B8B3CC96095&eid=78976D931AD1540F&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=8