Magnetic responses for heavy metal pollution recorded by the sediments from Bohai Sea, Eastern China

Xiaohui Wang; Longsheng Wang; Shouyun Hu; Liwei Meng; Lin Zeng; Buli Cui; Chao Zhan; Xianbin Liu; Qing Wang

iScience (Oct 2022)

Magnetic responses for heavy metal pollution recorded by the sediments from Bohai Sea, Eastern China

Xiaohui Wang,
Longsheng Wang,
Shouyun Hu,
Liwei Meng,
Lin Zeng,
Buli Cui,
Chao Zhan,
Xianbin Liu,
Qing Wang

Affiliations

Xiaohui Wang: Coast Institute of Ludong University, Yantai 264025, China
Longsheng Wang: Coast Institute of Ludong University, Yantai 264025, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China; State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Corresponding author
Shouyun Hu: State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Corresponding author
Liwei Meng: Coast Institute of Ludong University, Yantai 264025, China
Lin Zeng: Coast Institute of Ludong University, Yantai 264025, China
Buli Cui: Coast Institute of Ludong University, Yantai 264025, China
Chao Zhan: Coast Institute of Ludong University, Yantai 264025, China
Xianbin Liu: Coast Institute of Ludong University, Yantai 264025, China
Qing Wang: Coast Institute of Ludong University, Yantai 264025, China

Journal volume & issue: Vol. 25, no. 10
p. 105280

Abstract

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Summary: The Bohai Sea is facing multidirectional pressure from economic development and pollutant emissions. Magnetic minerals and heavy metal concentrations in the sediments of core M5 from the Bohai Sea were performed. The results of concentration-related magnetic parameters, heavy metal contents, and PLI (Tomlinson pollution load index) illustrate there are essential linkages of the sources, migration, and deposition. The predominant magnetic mineral was magnetite. Based on the chronological data from 210Pb and 137Cs activities, the increasing magnetic parameters and heavy metal concentrations at a depth of 81 cm were dated to 1950 CE, which corresponded to the establishment of the People’s Republic of China; the decrease at depths of 37–45 cm and 16–18 cm may be related to the decline in steel production in 1960 CE and the Tangshan earthquake in 1978 CE, respectively. This study enriches relevant theories of environmental magnetism via the ecological and environmental protection of the coastal zones.

Published in iScience

ISSN: 2589-0042 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science
Website: http://www.cell.com/iscience/home

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