Magneto-biomonitoring of intra-urban spatial variations of particulate matter using tree leaves |
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Authors: | Ann L Power Ann T Worsley Colin Booth |
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Institution: | (1) Geography Department, Natural Geographical and Applied Sciences, Edge Hill University, Ormskirk, Lancashire, L39 4QP, UK;(2) School of Engineering and the Built Environment, University of Wolverhampton, Wulfruna Street, Wolverhampton, West Midlands, WV1 1SB, UK |
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Abstract: | Preliminary mineral magnetic results from a pilot project investigating the suitability of roadside tree leaves as depositories
of vehicular pollution are presented. Tree leaf surfaces (Lime: Tilia europaea; Sycamore: Acer pseudoplatanus) at four roadside and one woodland location in Wolverhampton, UK, have been monitored (July 2003 to November 2003). Mineral
magnetic technologies have revealed spatial variations of particulate pollution concentration throughout the conurbation and
data analysis indicates that magnetic concentration parameters are suitable proxies for fine particulate pollution, which
are particularly hazardous to health. Site-specific traffic management and associated vehicle behaviour appear to be chiefly
responsible for the magnetic concentration differences between sites. Magneto-biomonitoring in this way allows the high-resolution
spatial mapping of particulate matter (PM) pollution, which may also benefit epidemiology in better assessing exposure to
vehicular-derived particulates. Given the speed, measurement sensitivity and non-destructive nature of the technique, it is
proposed that this low-cost approach offers some advantages over centralised monitoring stations to monitor urban roadside
particulate pollution. |
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Keywords: | Atmospheric particulate pollution Mineral magnetism Tree leaves |
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