中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院矿产资源研究重点实验室
The isotopic composition of sedimentary organic zinc and implications for the global Zn isotope mass balance

文献类型：期刊论文

作者Zhang, Yiyue5,6; Planavsky, Noah J.5; Zhao, Mingyu2,5; Isson, Terry1; Asael, Dan5; Wang, Changle3,4; Wang, Fei6
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2021-12-01
卷号314页码:16-26
关键词Zinc isotopes Organic solvent Organic Zn Sediment Marine Zn budget
ISSN号0016-7037
DOI10.1016/j.gca.2021.09.009
英文摘要Zinc (Zn) is a bioessential element whose cycling in the marine environment is closely linked to the biological pump. As a vital micronutrient, Zn is depleted in marine surface waters and enriched in deep waters. This has given rise to the longstanding hope that Zn could serve as a robust paleoproductivity proxy. There has been a recent focus on how Zn isotope signatures can be used to track the evolution of the biological pump. However, the factors controlling variations in the sedimentary Zn isotope composition of core-top sediments are debated and these values are influenced by changes in the relative contributions of biological uptake and scavenging processes and by mineral fractionations. In order to provide a new perspective on the Zn isotopic signature of marine core-top sediments and their potential for tracing ocean biogeochemical processes, we developed a sample preparation procedure to extract organically bound Zn (excluding inorganic Zn) without a significant isotope fractionation. We tested five potential organic solvents and found that the isopropanol extraction procedure provided a reproducible and robust result that yielded the highest recovery rate of organically bound Zn without a significant associated isotopic fractionation and appeared to exclude common mineral bound forms of Zn. This extraction procedure was used to analyze the Zn concentrations and isotopic compositions (delta Zn-66) of core-top sediment samples from Long Island Sound and the Peruvian continental margin. Our results suggest that the delta Zn-66 value of organic Zn increases with water depth, thus providing additional support for the finding that burial of isotopically light Zn occurs predominantly in shallow high-productivity sediments. However, we also found that the delta Zn-66 values of the estimated authigenic Zn component are consistently lighter than those of the organic Zn fraction, consistent with diagenetic (sediment pile) scavenging of organic derived Zn in sulfides imparting an isotope fractionation. (C) 2021 Elsevier Ltd. All rights reserved.
WOS关键词EMILIANIA-HUXLEYI ; CO-LIMITATION ; FRACTIONATION ; IRON ; PHYTOPLANKTON ; PACIFIC ; CADMIUM ; ION ; COMPLEXATION ; AVAILABILITY
资助项目David and Lucile Packard Foundation ; NASA Alternative Earths Astrobiology Institute ; China Scholarship Coun-cil (CSC) ; National Natural Science Foundation of China[41822706] ; National Natural Science Foundation of China[41473096] ; Beijing Natu-ral Science Foundation[8182034] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-001C1]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000702765800002
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构David and Lucile Packard Foundation ; David and Lucile Packard Foundation ; NASA Alternative Earths Astrobiology Institute ; NASA Alternative Earths Astrobiology Institute ; China Scholarship Coun-cil (CSC) ; China Scholarship Coun-cil (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Natu-ral Science Foundation ; Beijing Natu-ral Science Foundation ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; David and Lucile Packard Foundation ; David and Lucile Packard Foundation ; NASA Alternative Earths Astrobiology Institute ; NASA Alternative Earths Astrobiology Institute ; China Scholarship Coun-cil (CSC) ; China Scholarship Coun-cil (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Natu-ral Science Foundation ; Beijing Natu-ral Science Foundation ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; David and Lucile Packard Foundation ; David and Lucile Packard Foundation ; NASA Alternative Earths Astrobiology Institute ; NASA Alternative Earths Astrobiology Institute ; China Scholarship Coun-cil (CSC) ; China Scholarship Coun-cil (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Natu-ral Science Foundation ; Beijing Natu-ral Science Foundation ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; David and Lucile Packard Foundation ; David and Lucile Packard Foundation ; NASA Alternative Earths Astrobiology Institute ; NASA Alternative Earths Astrobiology Institute ; China Scholarship Coun-cil (CSC) ; China Scholarship Coun-cil (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Natu-ral Science Foundation ; Beijing Natu-ral Science Foundation ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/102699]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Wang, Fei
作者单位1.Univ Waikato Tauranga, Div Hlth Engn Comp & Sci, Tauranga, New Zealand
2.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
5.Yale Univ, Dept Earth & Planetary Sci, POB 208109, New Haven, CT 06520 USA
6.Beijing Normal Univ, Sch Environm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yiyue,Planavsky, Noah J.,Zhao, Mingyu,et al. The isotopic composition of sedimentary organic zinc and implications for the global Zn isotope mass balance[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2021,314:16-26.
APA Zhang, Yiyue.,Planavsky, Noah J..,Zhao, Mingyu.,Isson, Terry.,Asael, Dan.,...&Wang, Fei.(2021).The isotopic composition of sedimentary organic zinc and implications for the global Zn isotope mass balance.GEOCHIMICA ET COSMOCHIMICA ACTA,314,16-26.
MLA Zhang, Yiyue,et al."The isotopic composition of sedimentary organic zinc and implications for the global Zn isotope mass balance".GEOCHIMICA ET COSMOCHIMICA ACTA 314(2021):16-26.

入库方式： OAI收割

来源：地质与地球物理研究所

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。