Vertical distributions of pu239+240 activity and pu-240/pu-239 atom ratio in sediment core of lake chenghai, sw china
文献类型：期刊论文
| 作者 | Zheng, J.1; Liao, Haiqing2,3; Wu, Fengchang2; Yamada, M.1; Fu, Pingqing2; Liu, Congqiang2; Wan, Guojiang2 |
| 刊名 | Journal of radioanalytical and nuclear chemistry
 |
| 出版日期 | 2008 |
| 卷号 | 275期号:1页码:37-42 |
| ISSN号 | 0236-5731 |
| DOI | 10.1007/s10967-006-7001-2 |
| 通讯作者 | Zheng, j.(jzheng@nirs.go.jp) |
| 英文摘要 | Due to the different pu-240/pu-239 atom ratios from different sources of pu in the environment, pu isotopes have been widely used for source identification of radionuclides in sediments. in this work, using sector-field icp-ms, we investigated pu inventory and its isotopic composition in a lacustrine sediment core collected in chenghai lake, sw china. the pu-240/pu-239 atom ratios in this sediment core ranged from 0.166 to 0.271 with a mean of 0.195 +/- 0.021, which was slightly higher than that of global fallout. the pu239+240/cs-137 activity ratios ranged from 0.0155 to 0.0411, with a mean of 0.0215, and the pu239+240 inventory was 35.4 mbq/km(2); both pu239+240/cs-137 activity ratio and pu inventory were close to those values of global fallout at 20-30 degrees n. three peaks were observed for both cs-137 and pu239+240 activities in the examined sediment core; they most probably indicated the maximum deposition of global fallout between 1963 and 1964, the fallout from a series of chinese nuclear tests during the 1970s, and the deposition of resuspended pu-bearing particles from the chernobyl accident. therefore, the vertical profile of pu isotopes should provide useful time markers for rapid dating of recent sediments. |
| WOS关键词 | WESTERN NORTHWEST PACIFIC ; ICP-MS ; GLOBAL FALLOUT ; CS-137 ; PU ; PLUTONIUM ; PU-240 ; TRANSPORT ; SOILS |
| WOS研究方向 | Chemistry ; Nuclear Science & Technology |
| WOS类目 | Chemistry, Analytical ; Chemistry, Inorganic & Nuclear ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000251867200005 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2389499 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zheng, J. |
| 作者单位 | 1.Natl Inst Radiol Sci, Nakaminato Lab Marine Radioecol, Environm Radiat Effects Res Grp, Ibaraki 3111202, Japan 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, J.,Liao, Haiqing,Wu, Fengchang,et al. Vertical distributions of pu239+240 activity and pu-240/pu-239 atom ratio in sediment core of lake chenghai, sw china[J]. Journal of radioanalytical and nuclear chemistry,2008,275(1):37-42. |
| APA | Zheng, J..,Liao, Haiqing.,Wu, Fengchang.,Yamada, M..,Fu, Pingqing.,...&Wan, Guojiang.(2008).Vertical distributions of pu239+240 activity and pu-240/pu-239 atom ratio in sediment core of lake chenghai, sw china.Journal of radioanalytical and nuclear chemistry,275(1),37-42. |
| MLA | Zheng, J.,et al."Vertical distributions of pu239+240 activity and pu-240/pu-239 atom ratio in sediment core of lake chenghai, sw china".Journal of radioanalytical and nuclear chemistry 275.1(2008):37-42. |
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来源：中国科学院大学
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