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	Stable isotopic evidence of cadmium enrichment in soils of black shale distribution areas
通讯作者	Song, Yinxian([email protected]) ; Ji, Junfeng([email protected])
	Zhao, Wanfu1,2; Song, Yinxian3; Li, Wei1; Guan, Dongxing4; Li, Tao1,5; Guo, Chao1; Wei, Ning1; Ji, Junfeng1
	2024-11-01
发表期刊	APPLIED GEOCHEMISTRY
ISSN	0883-2927
卷号	175页码:9
摘要	Black shale-derived soils exhibit significant heavy metal enrichment, notably cadmium (Cd) enrichment. This study pioneered the reporting of delta(114)/Cd-110 isotopic values within a black shale-soil system, offering novel insights into the geochemical behaviors and enrichment mechanisms of Cd during soil formation processes influenced by weathering. Systematic rock-soil sampling was conducted on the lower Cambrian Hetang Formation in western Zhejiang, China, which is characterized by Cd-rich black shale. Employing analytical methods, including principal component analysis and multiple linear regression, we investigated the factors influencing heavy metal content in soil, such as element dissolution during weathering, soil pH, and the presence of iron-manganese oxides, sulfides, organic matter, and clay minerals. Our findings revealed a compositional range of delta(114)/Cd-110 in black shale (1.93 parts per thousand-3.31 parts per thousand) contrasting with that in adjacent soils (0.31 parts per thousand-1.82 parts per thousand), illustrating significant Cd isotopic fractionation during weathering, where heavier Cd isotopes are preferentially leached, and lighter isotopes are enriched in the soil in association with iron-manganese oxides. This research not only deepens the understanding of Cd enrichment mechanisms within the rock-soil system against a black shale geological background but also elucidates the formation processes of soil Cd pollution in areas with a high geochemical background.
关键词	Black shale-derived soils Cadmium isotope Chemical fingerprint High geochemical background
DOI	10.1016/j.apgeochem.2024.106185
收录类别	SCI
语种	英语
关键词[WOS]	PRIMARY PRODUCTIVITY ; TRACE-ELEMENTS ; CENTRAL HUNAN ; HEAVY-METALS ; FRACTIONATION ; CD ; POLLUTION ; PB ; CONSTRAINTS ; EVOLUTION
资助项目	National Key R & D Program of China[2017YFD0800303] ; Key Research and Development Project of the Ningxia Hui Autonomous Region, China[2022BEG03054]
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001327511100001
项目资助者	National Key R & D Program of China ; Key Research and Development Project of the Ningxia Hui Autonomous Region, China
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44402
专题	中国科学院南京地质古生物研究所
通讯作者	Song, Yinxian; Ji, Junfeng
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, Key Lab Surficial Geochem, Minist Educ, Nanjing 210023, Peoples R China 2.Ningxia Inst Land Resources Survey & Monitor, Yinchuan 750002, Peoples R China 3.Kunming Univ Sci & Technol, Fac Land Resource Engn, Dept Geosci, Kunming 650093, Yunnan, Peoples R China 4.Zhejiang Univ, Inst Soil & Water Resources & Environm Sci, Coll Environm & Resource Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Palaeobiol & Petr Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wanfu,Song, Yinxian,Li, Wei,et al. Stable isotopic evidence of cadmium enrichment in soils of black shale distribution areas[J]. APPLIED GEOCHEMISTRY,2024,175:9.
APA	Zhao, Wanfu.,Song, Yinxian.,Li, Wei.,Guan, Dongxing.,Li, Tao.,...&Ji, Junfeng.(2024).Stable isotopic evidence of cadmium enrichment in soils of black shale distribution areas.APPLIED GEOCHEMISTRY,175,9.
MLA	Zhao, Wanfu,et al."Stable isotopic evidence of cadmium enrichment in soils of black shale distribution areas".APPLIED GEOCHEMISTRY 175(2024):9.

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