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Characterization of Cu distribution in clay-sized soil aggregates by NanoSIMS and micro-XRF

文献类型：期刊论文

作者Li, Qi1,2; Hu, Xiping1,2; Hao, Jialong3; Chen, Wenli2; Cai, Peng1,2; Huang, Qiaoyun1,2
刊名CHEMOSPHERE
出版日期2020-06-01
卷号249页码:7
ISSN号0045-6535
关键词Soil fine aggregates Cu distribution Aging NanoSIMS Micro-XRF Histosol
DOI10.1016/j.chemosphere.2020.126143
英文摘要Aggregates are the basic structural units of soils. Fine soil aggregates are crucial pools for the retention of heavy metals. In this study, we evaluated the accumulation characteristics of exogenous Cu in the <2 mu m aggregate fractions from a Histosol for an aging of 28 months by nano-scale secondary ion mass spectrometry (NanoSIMS) and synchrotron micro-X-ray fluorescence (micro-XRF). Results showed that the correlations between Cu and Fe/Al/Mn increased from 0.10-0.17 to 0.55-0.63, while those between Cu and C decreased sharply from 0.61 to 0.10 and then increased to 0.36, indicating that exogenous Cu tended to accumulate on inorganic mineral components. The carbon NEXAFS data suggested that the relative content of aromatic and carboxyl carbon decreased from 8.1% and 30.8% to 3.6% and 17.8% at month 12, and increased to 5.9% and 26.0% at month 28, respectively. However, an opposite trend was found for alkyl and carbonyl carbon which showed an increase at month 12 followed by a decrease afterwards. The consistency for the correlations between Cu and C with the changes of aromatic and carboxyl carbon indicated their key roles in the binding of Cu on the organic components in the <2 mu m aggregates of Histosol. These direct observations offer a better understanding on the interactions of heavy metals with various soil components which is critical for the risk assessment and fate evaluation of exogenous Cu in soil ecosystems. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词2-DIMENSIONAL CORRELATION ANALYSES ; ORGANIC-MATTER ; HEAVY-METALS ; COMPETITIVE ADSORPTION ; COPPER ; SPECIATION ; FRACTIONS ; BINDING ; CD ; COLOCALIZATION
资助项目National Key Research and Development Program[2017YFA0605001] ; Key Project of Technological Innovation of Hubei Province[2018ABA092]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000527935600051
资助机构National Key Research and Development Program ; National Key Research and Development Program ; Key Project of Technological Innovation of Hubei Province ; Key Project of Technological Innovation of Hubei Province ; National Key Research and Development Program ; National Key Research and Development Program ; Key Project of Technological Innovation of Hubei Province ; Key Project of Technological Innovation of Hubei Province ; National Key Research and Development Program ; National Key Research and Development Program ; Key Project of Technological Innovation of Hubei Province ; Key Project of Technological Innovation of Hubei Province ; National Key Research and Development Program ; National Key Research and Development Program ; Key Project of Technological Innovation of Hubei Province ; Key Project of Technological Innovation of Hubei Province
源URL[http://ir.iggcas.ac.cn/handle/132A11/96226]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Huang, Qiaoyun
作者单位1.Huazhong Agr Univ, Hubei Key Lab Soil Environm & Pollut Remediat, Wuhan 430070, Peoples R China
2.Huazhong Agr Univ, Coll Resources & Environm, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Beituchengxi Rd, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qi,Hu, Xiping,Hao, Jialong,et al. Characterization of Cu distribution in clay-sized soil aggregates by NanoSIMS and micro-XRF[J]. CHEMOSPHERE,2020,249:7.
APA Li, Qi,Hu, Xiping,Hao, Jialong,Chen, Wenli,Cai, Peng,&Huang, Qiaoyun.(2020).Characterization of Cu distribution in clay-sized soil aggregates by NanoSIMS and micro-XRF.CHEMOSPHERE,249,7.
MLA Li, Qi,et al."Characterization of Cu distribution in clay-sized soil aggregates by NanoSIMS and micro-XRF".CHEMOSPHERE 249(2020):7.

入库方式： OAI收割

来源：地质与地球物理研究所

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