A Global Assessment of Copper, Zinc, and Lead Isotopes in Mineral Dust Sources and Aerosols

doi:10.3389/feart.2020.00167

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	A Global Assessment of Copper, Zinc, and Lead Isotopes in Mineral Dust Sources and Aerosols
	Schleicher, Nina J.1; Dong, Shuofei 1,2; Packman, Hollie 1; Little, Susan H.1,3; Ochoa Gonzalez, Raquel 1,4; Najorka, Jens 5; Sun, Youbin 6; Weiss, Dominik J.1,7
通讯作者	Schleicher, Nina J.(n.schleicher@imperial.ac.uk) ; Weiss, Dominik J.(d.weiss@imperial.ac.uk)
	2020-06-12
发表期刊	FRONTIERS IN EARTH SCIENCE
卷号	8 页码:20
摘要	The stable isotope compositions of Cu and Zn in major geochemical reservoirs are increasingly studied with the aim to develop these isotope systems as tools to investigate the global biogeochemical cycles of these trace metals. The objectives of the present study were (i) to expand the range of Cu, Zn, and Pb isotope compositions of mineral dust by analyzing samples from major mineral dust sources in Asia and Africa (Chinese Loess Plateau, Chinese deserts, Thar desert, Sahel region) and (ii) to assess the potential impact of human activities on the isotope composition of aerosols by synthesizing published Cu and Zn isotope compositions in aerosols and natural and anthropogenic sources. For the newly analyzed mineral dust areas in Asia and Africa, delta(65)Cu(NIST-976)values range from -0.54 to +0.52 parts per thousand, delta(66)Zn(JMC-Lyon)values from -0.07 to +0.57 parts per thousand, and(206)Pb/Pb-204 values from 18.522 to 19.696. We find a significant geographic control with samples from the Thar Desert having the heaviest isotopic compositions (delta Cu-65(NIST-976)= +0.48 +/- 0.06 parts per thousand, delta Zn-66(JMC-Lyon)= +0.49 +/- 0.11 parts per thousand) and samples from the Sahel and the Badain Jaran desert having the lightest Zn isotope composition (delta Zn-66(JMC-Lyon)= +0.19 +/- 0.15 parts per thousand and +0.07 +/- 0.07 parts per thousand, respectively). We find important variations in the isotope signatures between particle size fractions with heavier isotopic compositions in the smallest and largest particle size fractions and lighter isotopic compositions in the mid particle size fractions. Associations with the mineralogical composition are less clear. Newly analyzed aerosol samples for Beijing and Xi'an show delta(65)Cu(NIST-976)values of +0.29 +/- 0.19 parts per thousand and +0.16 +/- 0.04 parts per thousand, delta(66)Zn(JMC-Lyon)values of -0.36 +/- 0.04 parts per thousand and +0.02 +/- 0.06 parts per thousand, and(206)Pb/Pb-204 values of 18.129 +/- 0.003 and 18.031 +/- 0.003, respectively. Based on a synthesis of published and novel data, we suggest improved ranges and mean values for the isotopic composition of mineral dust from selected locations in Asia and Africa and of anthropogenic sources such as non-exhaust traffic emissions, combustion, electroplating and galvanization. This should serve as a valuable reference for future studies using these isotope systems. This paper demonstrates univocally that human activity introduces a wide range of Zn isotope compositions into the atmospheric environment and, thus, impacts the biogeochemical cycle of Zn.
关键词	isotopes mineral dust urban aerosols anthropogenic sources MC-ICP-MS
DOI	10.3389/feart.2020.00167
关键词[WOS]	RARE-EARTH-ELEMENTS ; ZN ISOTOPE ; PARTICULATE MATTER ; ASIAN DUST ; ANTHROPOGENIC SOURCES ; RATIO MEASUREMENTS ; BIOGEOCHEMICAL PROCESSES ; SOURCE APPORTIONMENT ; URBAN AEROSOLS ; CU ISOTOPES
收录类别	SCI ; SCI
语种	英语
资助项目	UK-China Scholarships for Excellence ; German Research Foundation (DFG)[SCHL 1908/2-1] ; NERC independent research fellowship[NE/P018181/1] ; European Commission (FP7-PEOPLE-2012-IEF)[329878]
WOS研究方向	Geology
项目资助者	UK-China Scholarships for Excellence ; German Research Foundation (DFG) ; NERC independent research fellowship ; European Commission (FP7-PEOPLE-2012-IEF)
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000543847300001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14983
专题	古环境研究室
通讯作者	Schleicher, Nina J.; Weiss, Dominik J.
作者单位	1.Imperial Coll London, Dept Earth Sci & Engn, London, England 2.Agilent Technol Co Ltd China, Beijing, Peoples R China 3.UCL, Dept Earth Sci, London, England 4.Fdn Promot Appl & Sci Res Asturias, FICYT, Unit European Projects, Oviedo, Spain 5.Nat Hist Museum, Core Res Dept, London, England 6.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 7.Princeton Univ, Civil & Environm Engn, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Schleicher, Nina J.,Dong, Shuofei,Packman, Hollie,et al. A Global Assessment of Copper, Zinc, and Lead Isotopes in Mineral Dust Sources and Aerosols[J]. FRONTIERS IN EARTH SCIENCE,2020,8:20.
APA	Schleicher, Nina J..,Dong, Shuofei.,Packman, Hollie.,Little, Susan H..,Ochoa Gonzalez, Raquel.,...&Weiss, Dominik J..(2020).A Global Assessment of Copper, Zinc, and Lead Isotopes in Mineral Dust Sources and Aerosols.FRONTIERS IN EARTH SCIENCE,8,20.
MLA	Schleicher, Nina J.,et al."A Global Assessment of Copper, Zinc, and Lead Isotopes in Mineral Dust Sources and Aerosols".FRONTIERS IN EARTH SCIENCE 8(2020):20.