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Sedimentary record of plutonium in the North Yellow Sea and theresponse to catchment environmental changes of inflow rivers
Xu,YH(Xu,Yihong)1; Pan,SM(Pan,Shaoming)1; Gao,JH(Gao,Jianhua)1; Hou,XL(Hou,Xiaolin)2,3; Ma,YF(Ma,Yongfu)4; Hao,YP(Hao,Yongpei)1; Pan,Shaoming
2018-09
Source PublicationChemosphere
Volume207Issue:2018Pages:130-138
Subtype期刊论文
AbstractPlutonium (Pu) isotopes were first determined in surface and core sediment samples collected from the northern North Yellow Sea (NYS) to elucidate their source terms and deposition process as well as the response to catchment environmental changes of inflow rivers. 240Pu/239Pu atom ratios in all sediments showed the typical global fallout value of ∼0.18 without any influences from the nuclear weapons tests conducted recently in the North Korea or early in the Pacific Proving Ground. The large variation of 239+240Pu activities (0.022-0.515 mBq/g) observed in surface sediments should be mainly attributed to the re-suspension and transportation of fine sediments influenced by the Liaonan Costal Current. Based on the two 239+249Pu depth profiles with easily observed onset fallout levels (1952) and global fallout peaks (1963), 239+240Pu served as a valid time mark in the coastal sedimentary system. Riverine input Pu contributed only 15-27% to the total global fallout inventory (92.5-108.8 Bq/m2) in the northern NYS, much lower than that in the Yangtze River estuary (77-80%), indicating a better soil conservation in the northeast China due to higher forest coverage compared to the Yangtze River's drainage basin. The increase of riverine input Pu after 1980s reflected the more intense soil erosion degree caused by the land use and cover change due to the increment of human activities in the northeast China at the same period. Our results demonstrated that plutonium is a good indicator for studying sedimentary process and its response to the environment in the coastal area.
KeywordPlutonium North Yellow Sea Sediment Isotopic Ratio Chronological Marker Riverine Input
DOI10.1016/j.chemosphere.2018.05.082
Indexed BySCI
Project Number41671466 ; 41501286 ; 41576043 ; BK20150578 ; SKLLQG1624 ; 020914380010 ; 020914380001
Language英语
Funding OrganizationNational Natural ScienceFoundation of China ; National Natural ScienceFoundation of China ; NaturalScience Foundation of Jiangsu Province ; NaturalScience Foundation of Jiangsu Province ; OpenFoundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; OpenFoundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5357
Collection加速器质谱中心
Corresponding AuthorPan,Shaoming
Affiliation1.The Key Laboratory of Coastal and Island Development of Ministry of Education, School of Geographic and Oceanographic Sciences, Nanjing University,Nanjing 210023, China
2.Center for Nuclear Technologies, Technical University of Denmark, Risø Campus, DK-4000 Roskilde, Denmark
3.Xi'an AMS Center, SKLLQG, Institute of Earth Environment, CAS, Xi'an 710061, China
4.The Key Laboratory of Environmental Radiation Monitoring of Ministry of Environmental Protection, Radiation Monitoring Department, EnvironmentalRadiation Monitoring Technical Center of Ministry of Environmental Protection, Hangzhou 310012, China
Recommended Citation
GB/T 7714
Xu,YH,Pan,SM,Gao,JH,et al. Sedimentary record of plutonium in the North Yellow Sea and theresponse to catchment environmental changes of inflow rivers[J]. Chemosphere,2018,207(2018):130-138.
APA Xu,YH.,Pan,SM.,Gao,JH.,Hou,XL.,Ma,YF.,...&Pan,Shaoming.(2018).Sedimentary record of plutonium in the North Yellow Sea and theresponse to catchment environmental changes of inflow rivers.Chemosphere,207(2018),130-138.
MLA Xu,YH,et al."Sedimentary record of plutonium in the North Yellow Sea and theresponse to catchment environmental changes of inflow rivers".Chemosphere 207.2018(2018):130-138.
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