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Detecting atmospheric pollution in surface soils using magnetic measurements: a reappraisal using an England and Wales database

Detecting atmospheric pollution in surface soils using magnetic measurements: a reappraisal using an England and Wales database
Detecting atmospheric pollution in surface soils using magnetic measurements: a reappraisal using an England and Wales database
Industrial activity such as burning of fossil fuels produces magnetically enhanced particulates. These particulates consist of coarse-grained multidomain and stable single domain magnetic minerals. Two threshold values of low field magnetic susceptibility (XLF) and frequency dependent susceptibility percentage (XFD%) discriminate ferrimagnetic minerals of these sizes and can act as a tracer of magnetic pollution. Application of the thresholds to a magnetic topsoil data set (n=5656 across England and Wales) revealed 637 samples potentially dominated by pollution particulates. The magnetic parameters of these samples display a negative correlation of with distance to urban areas and positive correlations with metals associated with anthropogenic activity (Cu, Pb, and Zn). Results of experimentation with threshold values and modelling of magnetic anomalies suggest that regional factors such as geology and potential for pedogenic secondary magnetic enhancement should be considered when setting threshold values.
environmental magnetism, topsoil, metals, pollution, england/wales
0269-7491
2878-2890
Blundell, A.
1966d0f0-724d-40d9-b104-5495f7018794
Hannam, J.A.
62b17b22-42da-4d8c-9333-1300d69c358a
Dearing, J.A.
dff37300-b8a6-4406-ad84-89aa01de03d7
Boyle, J.F.
1148a73e-ce47-41d8-9dc2-3bc88537cbea
Blundell, A.
1966d0f0-724d-40d9-b104-5495f7018794
Hannam, J.A.
62b17b22-42da-4d8c-9333-1300d69c358a
Dearing, J.A.
dff37300-b8a6-4406-ad84-89aa01de03d7
Boyle, J.F.
1148a73e-ce47-41d8-9dc2-3bc88537cbea

Blundell, A., Hannam, J.A., Dearing, J.A. and Boyle, J.F. (2009) Detecting atmospheric pollution in surface soils using magnetic measurements: a reappraisal using an England and Wales database. Environmental Pollution, 157, 2878-2890. (doi:10.1016/j.envpol.2009.02.031).

Record type: Article

Abstract

Industrial activity such as burning of fossil fuels produces magnetically enhanced particulates. These particulates consist of coarse-grained multidomain and stable single domain magnetic minerals. Two threshold values of low field magnetic susceptibility (XLF) and frequency dependent susceptibility percentage (XFD%) discriminate ferrimagnetic minerals of these sizes and can act as a tracer of magnetic pollution. Application of the thresholds to a magnetic topsoil data set (n=5656 across England and Wales) revealed 637 samples potentially dominated by pollution particulates. The magnetic parameters of these samples display a negative correlation of with distance to urban areas and positive correlations with metals associated with anthropogenic activity (Cu, Pb, and Zn). Results of experimentation with threshold values and modelling of magnetic anomalies suggest that regional factors such as geology and potential for pedogenic secondary magnetic enhancement should be considered when setting threshold values.

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More information

Published date: 13 March 2009
Keywords: environmental magnetism, topsoil, metals, pollution, england/wales

Identifiers

Local EPrints ID: 68598
URI: https://eprints.soton.ac.uk/id/eprint/68598
ISSN: 0269-7491
PURE UUID: 7d53b449-4742-4f16-b6c4-7531821aebc5
ORCID for J.A. Dearing: ORCID iD orcid.org/0000-0002-1466-9640

Catalogue record

Date deposited: 11 Dec 2009
Last modified: 06 Jun 2018 12:44

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