Monitoring Of Atmospheric Dust Deposition
By Using A Magnetic Method
Author(s)
A. Kapička, E. Petrovský & H. Grison
Abstract
Several studies showed that atmospheric dust contains significant portions of
minerals characterized by ferrimagnetic properties. These minerals, mostly iron
oxides, can serve as tracers of industrial pollutants in soil layers. In our paper we
have investigated magnetic properties of depth soil profiles from the Ore
Mountains (Czech Republic), which belong to a highly contaminated, so-called
Black Triangle in central Europe. Emissions are determined by considerable
concentration of big sources of pollution (power plants burning fossil fuel,
metallurgical and chemical industry). Increased values of magnetic susceptibility
(25100 10-5 SI) were clearly identified in the top-soil layers.
Thermomagnetic analyses and SEM observation indicate that the accumulated
anthropogenic ferrimagnetics dominate these layers. Magnetic enhancement is
limited to depths of 47 cm below the soil surface, usually in F-H or on the top
of Ah soil horizons; deeper soil horizons contain mainly magnetically weak
materials and are characterized by much lower values of susceptibility (up to
20 10-5 SI). Significant magnetic parameters (e.g. Curie temperature TC) and
SEM results of contaminated topsoils are comparable with magnetic parameters
of atmospheric dust, collected (using high-volume samplers) at the same
localities.
Keywords: atmospheric dust, topsoil pollution, magnetic susceptibility.
1 Introduction
Results of regular monitoring provide information on the temporal development
of air pollution and spatial distribution of the pollutants concentration over the
territory of Czech Republic. Distribution of the pollutants is very complex and
depends upon several factors. Emissions from local heating, traffic and partly
Keywords
atmospheric dust, topsoil pollution, magnetic susceptibility
Related Book
Other papers in this volume
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