Magnetic susceptibility variation of MSW compost-amended soils: In-situ method for monitoring heavy metal contamination

Magnetic susceptibility was measured for agricultural soils in Mornag area, Tunisia, where the soils were partly amended by manure or compost obtained from municipal solid waste stabilisation (‘MSW compost’). Our study indicates that natural non-treated soils and manure-amended soils are always low...

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Bibliographic Details
Published in:Waste management & research 2003-04, Vol.21 (2), p.155-160
Main Authors: Yoshida, Mitsuo, Jedidi, Naceur, Hamdi, Helmi, Ayari, Fethia, Hassen, Abdennaceur, M’Hiri, Ali
Format: Article
Language:English
Subjects:
Agriculture
Conservation of Natural Resources
Environmental Monitoring - methods
Magnetics
Manure
Metals, Heavy - analysis
Metals, Heavy - isolation & purification
Refuse Disposal
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Summary:Magnetic susceptibility was measured for agricultural soils in Mornag area, Tunisia, where the soils were partly amended by manure or compost obtained from municipal solid waste stabilisation (‘MSW compost’). Our study indicates that natural non-treated soils and manure-amended soils are always low in magnetic susceptibility, but MSW compost-amended soils show higher values of this parameter. Actually, the increase of magnetic susceptibility shows a direct correspondence with the increasing of the amount of MSW compost added to the soil. According to the magnetic mineralogical investigation carried out by isothermal remanent magnetisation acquisition technique, higher magnetic susceptibility values are depending on an increase in ferromagnetic components such as either magnetite (-Fe3 O4) or maghemite (-Fe2 O3) particles. The growth in content of these ferromagnetic components corresponds to an increase of the concentration of heavy metals in soils, which means that magnetic susceptibility indirectly indicates the concentration of heavy metals in MSW compost-amended soils.
ISSN:0734-242X
1096-3669
DOI:10.1177/0734242X0302100209