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Biomagnetic monitoring of Atmospheric particulate Pollution through Roadside tree leaves in Aizawl city, Mizoram and their temporal and spatial variations

Author Affiliations

  • 1 Department of Environmental Science, Mizoram University, Tanhril, Aizawl-796004, Mizoram, INDIA

Int. Res. J. Environment Sci., Volume 3, Issue (8), Pages 46-53, August,22 (2014)


Particulate matter (PM) is one of the six criteria pollutants in terms of adverse impact on human health. It has been demonstrated that magnetic measurement is an important means in PM pollution study through plant leaves. Plants species are found as effective biomonitors and may act as natural filters by trapping and retaining PM on their leaf surfaces. In the present study, the magnetic properties [Magnetic susceptibility (χ), Anhysteretic remanent magnetization (ARM) and Saturation isothermal remanent magnetization (SIRM)] of three roadside plant leaves (Bougainvillea spectabilis, Cassia fistula and Lantana camara) at four spatially distant sites were measured in order to compare their capability to accumulate PM. Further, the aim of this study was to assess PM pollution at selected sites and to establish the relationship between magnetic properties and PM in Aizawl city. The results indicated significant correlation between the concentration of ambient PM and magnetic measurement (χ, ARM and SIRM) of the selected roadside plant leaves. Similarly, significant correlations between magnetic parameters (χ, ARM and SIRM) and Fe concentrations have been demonstrated. Present study may be a novel contribution in the field of bio-magnetic monitoring as the previous related studies confined their quest mostly to temperate plants, concentrating on single magnetic parameter. However, in present study we have selected three magnetic parameters (χ, ARM and SIRM). Study concluded that bio-magnetic monitoring as an application of environmental geomagnetism may act as proxy for ambient PM pollution and may act as an eco-sustainable tool for environmental management in urban and peri-urban regions.


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