Identification of the Distribution and Sources of Pu in the Northern South China Sea: Influences of Provenance and Scavenging
文献类型：期刊论文
| 作者 | Wang, Ruirui; Lei, Ling; Li, Gang; Liu, Zhiyong |
| 刊名 | ACS EARTH AND SPACE CHEMISTRY
 |
| 出版日期 | 2019 |
| 卷号 | 3期号:12页码:2684 |
| 关键词 | Pu239+240 activity (240)pu/Pu-239 atom ratio PPG northern South China Sea Pearl River estuary Pu scavenging |
| DOI | 10.1021/acsearthspacechem.9b00245 |
| 英文摘要 | y To investigate the distribution and source of plutonium in the northern South China Sea, surface sediments, including samples from the shore, shelf, slope, and Pearl River estuary, were collected to analyze plutonium (Pu) isotopes with sector field inductively coupled plasma mass spectrometry (SF-ICP-MS). In this study, we demonstrate that the distributions of Pu239+24 activities and Pu-24/Pu-239 atom ratios both showed an increasing trend from the shore to the inner shelf and a decreasing trend from the inner shelf toward the outer shelf and slope. This variation trend was different from those observed in previous studies in the same study area, and the obvious dividing line was the vicinity of the 50 m isobath. All of the Pu-240/Pu-239 atom ratios in the studied surface sediments were higher than the global fallout value (0.178 +/- 0.019), which might indicate that the Pu in the northern South China Sea (NSCS) was a mixture of global fallout Pu and Pacific Proving Ground (PPG) Pu. Using a simple two end-member mixing model, the contribution of Pu from the PPG was approximately 60-71% in the NSCS and approximately 49-69% in the Pearl River estuary. We also study the different characteristics of the Pu scavenging process in different areas, which, in combination with the terrain, sediment composition affected the distribution of Pu239+240 activities and (240)pu/Pu-239 atom ratios in the NSCS. In fact, according to the low accumulation rate of sediments in the shore area near western Guangdong Province (WGC), the Pu in surface sediments best retained information on Pu scavenging in the 1950s. Finally, due to particular interactions, the vicinity of the 50 m isobath is considered the priority for future environmental risk assessment. |
| 资助机构 | National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41773004, 41676031, 41306047]; Guangdong National Natural Science Foundation [2017A030313252]; Youth Innovation Promotion Association of CAS [2017395]; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2016M590494]; Jiangsu Postdoctoral Science FoundationChina Postdoctoral Science Foundation [1501057C] ; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41773004, 41676031, 41306047]; Guangdong National Natural Science Foundation [2017A030313252]; Youth Innovation Promotion Association of CAS [2017395]; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2016M590494]; Jiangsu Postdoctoral Science FoundationChina Postdoctoral Science Foundation [1501057C] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18244]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Ruirui,Lei, Ling,Li, Gang,et al. Identification of the Distribution and Sources of Pu in the Northern South China Sea: Influences of Provenance and Scavenging[J]. ACS EARTH AND SPACE CHEMISTRY,2019,3(12):2684, 2694. |
| APA | Wang, Ruirui,Lei, Ling,Li, Gang,&Liu, Zhiyong.(2019).Identification of the Distribution and Sources of Pu in the Northern South China Sea: Influences of Provenance and Scavenging.ACS EARTH AND SPACE CHEMISTRY,3(12),2684. |
| MLA | Wang, Ruirui,et al."Identification of the Distribution and Sources of Pu in the Northern South China Sea: Influences of Provenance and Scavenging".ACS EARTH AND SPACE CHEMISTRY 3.12(2019):2684. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。