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Magnetic approach to normalizing heavy metal concentrations for particle size effects in intertidal sediments in the Yangtze Estuary, China

Zhang, W, Yu, L, Lu, M, Hutchinson, SM and Feng, H 2007, 'Magnetic approach to normalizing heavy metal concentrations for particle size effects in intertidal sediments in the Yangtze Estuary, China' , Environmental Pollution, 147 (1) , pp. 238-244.

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Abstract

In this study, mineral magnetic, particle size and geochemical analyses were conducted on intertidal sediments from the Yangtze Estuary to examine the feasibility of heavy metal concentrations normalization using magnetic techniques. Susceptibility of Anhysteretic Remanent Magnetization (χARM), the ratio of χARM to SIRM (Saturation Isothermal Remanent Magnetization) and susceptibility (χARM/SIRM and χARM/χ, respectively), and to a lesser degree, frequency dependent susceptibility (χfd), displayed significant correlations with the fine sediment fraction (<16 µm). The strong relationships between χARM and heavy metals can be explained by the role of particle size and iron oxides in controlling metal concentrations. This study demonstrates that χARM can be used to normalize for particle size effects as efficiently as common reference elements such as Al. Furthermore, the rapid and non-destructive nature of mineral magnetic measurement technique means that χARM has a considerable application value in environmental quality monitoring and related studies.

Item Type: Article
Themes: Subjects / Themes > G Geography. Anthropology. Recreation > GB Physical geography > GB0651 Hydrology. Water > GB0980 - GB2998 Ground and surface waters
Subjects / Themes > G Geography. Anthropology. Recreation > GE Environmental Sciences
Subjects / Themes > Q Science > QD Chemistry
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology > School of the Built Environment
Colleges and Schools > College of Science & Technology > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
Journal or Publication Title: Environmental Pollution
Publisher: Elsevier
Refereed: Yes
ISSN: 0269-7491
Depositing User: H Kenna
Date Deposited: 09 Oct 2007 12:10
Last Modified: 20 Aug 2013 16:50
URI: http://usir.salford.ac.uk/id/eprint/754

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