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Maity, Rimjhim
- Magnetic Susceptibility as a Proxy for Pollution in Triveni-Bandel Area, Hooghly District, West Bengal, India
Abstract Views :206 |
PDF Views:73
Authors
Supriya Mondal
1,
Saurodeep Chatterjee
1,
Rimjhim Maity
1,
Debesh Gain
1,
Ayanangshu Das
1,
Saikat Sinha
1
Affiliations
1 Department of Geological Sciences, Jadavpur University, Kolkata 700 032, IN
1 Department of Geological Sciences, Jadavpur University, Kolkata 700 032, IN
Source
Current Science, Vol 112, No 11 (2017), Pagination: 2306-2311Abstract
This study aims at tracing the distribution and concentration of contaminants in fly ash along roads and highways with appreciable traffic by using magnetic proxies. Magnetic susceptibility is used for pollution mapping in the field. The distribution of susceptibility values represents polluted areas strongly influenced by traffic frequency, roadside topography, meteorological conditions (e.g. wind direction) and other factors. A magnetic phase was found to be responsible for the enhancement of magnetic signal in roadside ash. Magnetic methods provide effective tools for delineation of industrial pollution such as fly ash. In the area studied, magnetic susceptibility proved to be an excellent proxy for analysis of intensity of pollution yielding interesting results.Keywords
Bandel, Fly Ash, Magnetic Proxies, Magnetic Susceptibility, Pollution.Full Text
References
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- Imprints of vehicular pollution in roadside dust from Kolkata, India: insights from magnetic susceptibility, geo-statistical and SEM studies
Abstract Views :133 |
PDF Views:74
Authors
Affiliations
1 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India, IN
2 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India; Department of Geology, Rajiv Gandhi University, Rono Hills, Papum Pare 791 112, India, IN
3 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India, IN
4 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India; Geology Department, Asutosh College, S.P. Mukherjee Road, Kolkata 700 026, India, IN
1 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India, IN
2 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India; Department of Geology, Rajiv Gandhi University, Rono Hills, Papum Pare 791 112, India, IN
3 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India, IN
4 Department of Geological Sciences, Jadavpur University, 188 Raja S.C. Mullick Road, Kolkata 700 032, India; Geology Department, Asutosh College, S.P. Mukherjee Road, Kolkata 700 026, India, IN
Source
Current Science, Vol 124, No 1 (2023), Pagination: 56-62Abstract
The present study aimed to determine the magnetic susceptibility of roadside dust collected from different parts of Kolkata city, West Bengal, India. The average value of susceptibility was 4.96 ´ 10–6 m3/kg, the highest being 19.6 ´ 10–6 m3/kg and the lowest being 1.2 ´ 10–6 m3/kg. The frequency-dependent susceptibility value (average = 2.19) indicated the dominance of stable-single domain grains with a low concentration of superparamagnetic grains at a few locations. SEM analysis showed morphological diversity of road dust – irregular, aggregate, angular and cloudy. Energy dispersive X-ray spectroscopy analysis of the dust particles revealed that Ca-rich, Na-rich and Fe-rich particles were abundant. Compositions were variable with the morphology. The mapping of magnetic susceptibility indicated that the susceptibility values were higher in areas with heavy vehicular traffic and other polluting sources. However, some areas with high pollution had open spaces, indicating the dispersion of magnetic pollutants. The study indicated the degradation of the environment due to anthropogenic activitiesFull Text
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