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DOI10.1016/j.scitotenv.2021.150481
Geographical drivers of geochemical and mineralogical evolution of Motianling peatland (Northeast China) exposed to different sources of rare earth elements and Pb, Nd, and Sr isotopes
Fialkiewicz-Koziel, Barbara; Bao, Kunshan; Smieja-Krol, Beata
Corresponding AuthorFialkiewicz-Koziel, B (corresponding author), Adam Mickiewicz Univ, Inst Geoinformat & Geoecol, Krygowskiego 10, Poznan, Poland.
JournalSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
Year Published2022
Volume807
Abstract in EnglishGeochemical shifts triggered by surface runoff and atmospheric fallout in a Chinese peatland were investigated by using Pb, Sr, and Nd, REE and by SEM mineralogical analysis. Motianling peatland (Northeast China) is located at 1670 ma.s.l., near the China-Mongolia border. Based on division of profile into two phases of different trophy, the total Sigma REE value determined for the minerotrophic part of the profile (from 62 to 46 cm) varied from 67 to 31 mg.kg(-1) and mineralogical analysis revealed the occurrence of weathered volcanic rocks, supported by a high epsilon Nd value (-3.26). After the transition from minerotrophic to more ombrotrophic conditions, the peatland became independent of the local bedrock weathering, which was manifested by a much lower concentration of REE (7-20 mg.kg(-1)) and lower eNd values (-7.37; -8.11). Moreover, PAAS-normalized pattern of REE distribution in the bottom part revealed the highest Eu/Eu* value (1.24), as well as a slight enrichment in Eu. The anthropogenic effect was visible from 1964, during which period the spheroidal aluminosilicate particles (SAP), produced by coal-fired power-plant activity, appeared for the first time, followed by an abrupt decrease in Pb-206/Pb-207 isotopic signature to 1.167. The dimensions of SAP (similar to 1.5 mu m), as well as the time of first appearance, indicated long-range transport. The REE ratios obtained in this study are characteristic of the eolian deposition signature, which is like the Gobi and northern Chinese deserts. The anthropogenic activity was manifested by a slight enrichment in Gd during reduced delivery of natural dust. Both, North Chinese and Asian part of the Russian industry supply anthropogenic dust. Topography, wind direction, and patterns of precipitation, as well as the initial phases of Asian industrial development, are the most important drivers promoting the deposition of chemical elements. (C) 2021 The Authors. Published by Elsevier B.V.
Keyword in EnglishPeat bog Stable isotopes Rare earth elements Anthropocene Source provenance
SubtypeArticle
Language英语
OA Typehybrid
Indexed BySCI-E
WOS IDWOS:000707662000004
WOS KeywordATMOSPHERIC METAL-DEPOSITION ; GREAT HINGGAN MOUNTAIN ; LONG-RANGE TRANSPORT ; ASIAN DUST STORM ; C-14 YR BP ; JURA MOUNTAINS ; INORGANIC GEOCHEMISTRY ; ANTHROPOGENIC LEAD ; TRACE-ELEMENTS ; AIR-POLLUTANTS
WOS SubjectEnvironmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/364637
Affiliation[Fialkiewicz-Koziel, Barbara] Adam Mickiewicz Univ, Inst Geoinformat & Geoecol, Krygowskiego 10, Poznan, Poland; [Bao, Kunshan] South China Normal Univ, Sch Geog, Guangzhou 510631, Peoples R China; [Smieja-Krol, Beata] Univ Silesia, Inst Earth Sci, Fac Nat Sci, Bedzinska 60, PL-41200 Sosnowiec, Poland
Recommended Citation
GB/T 7714
Fialkiewicz-Koziel, Barbara,Bao, Kunshan,Smieja-Krol, Beata. Geographical drivers of geochemical and mineralogical evolution of Motianling peatland (Northeast China) exposed to different sources of rare earth elements and Pb, Nd, and Sr isotopes[J],2022,807.
APA Fialkiewicz-Koziel, Barbara,Bao, Kunshan,&Smieja-Krol, Beata.(2022).Geographical drivers of geochemical and mineralogical evolution of Motianling peatland (Northeast China) exposed to different sources of rare earth elements and Pb, Nd, and Sr isotopes.SCIENCE OF THE TOTAL ENVIRONMENT,807.
MLA Fialkiewicz-Koziel, Barbara,et al."Geographical drivers of geochemical and mineralogical evolution of Motianling peatland (Northeast China) exposed to different sources of rare earth elements and Pb, Nd, and Sr isotopes".SCIENCE OF THE TOTAL ENVIRONMENT 807(2022).
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