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Determining the sources of atmospheric particulates in Shanghai, China, from magnetic and geochemical properties

Record type: Article

The study describes an investigation into the sources of atmospheric particles collected at 11 sites across Shanghai, China, during one week in November 1998. Source ascription is based on mineral magnetic and geochemical properties, and a chemical mass balance (CMB) model. The CMB model shows that the main contributions to total suspended particles (TSPs) are products of coal combustion, with lesser contributions from construction sites, vehicle emissions, windblown soil and steel-making furnaces. The spatial variability of concentration-dependent magnetic parameters and heavy metal concentrations support the "ndings from the CMB model. In general, the variability of magnetic quotient parameters is lower than for concentration parameters. This suggests that there are relatively constant proportions of low coercivity &magnetite' and high coercivity &haematite' mineral phases in dust samples at all sites, with a dominance of superparamagnetic (SP) and multidomain (MD)#pseudo-single domain (PSD) &magnetite' grains. MD#PSD grains are produced to a large extent by fossil-fuel combustion emissions, particularly from the main iron and steel manufacturing and power generation industrial complex. Linear multiple regression analyses show that some non-destructive and rapid magnetic measurements may be used to estimate the concentrations of common heavy metals in TSPs.

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Citation

Shu, Jiong, Dearing, John A., Morse, Andrew P., Yu, Lizhong and Yuan, Nu (2001) Determining the sources of atmospheric particulates in Shanghai, China, from magnetic and geochemical properties Atmospheric Environment, 35, (15), pp. 2615-2625. (doi:10.1016/S1352-2310(00)00454-4).

More information

Published date: May 2001
Keywords: atmospheric pollution, environment magnetism, chemical mass balance, total suspended particles, Shanghai

Identifiers

Local EPrints ID: 55633
URI: http://eprints.soton.ac.uk/id/eprint/55633
ISSN: 1352-2310
PURE UUID: 40de5bbd-880a-47eb-866d-f2d70685e1ed
ORCID for John A. Dearing: ORCID iD orcid.org/0000-0002-1466-9640

Catalogue record

Date deposited: 04 Aug 2008
Last modified: 17 Jul 2017 14:32

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Contributors

Author: Jiong Shu
Author: John A. Dearing ORCID iD
Author: Andrew P. Morse
Author: Lizhong Yu
Author: Nu Yuan

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