Particulate matter bio-monitoring through magnetic properties of an Indo-Burma hotspot region |
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Authors: | Prabhat Kumar Rai Biku Moni Chutia |
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Institution: | 1. Department of Environmental Science, School of Earth Science &2. Natural Resource Management, Mizoram Central University, Aizawl, India |
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Abstract: | Present study aimed to investigate the bio-monitoring study of particulate matter (PM) pollutants of 12 roadside plant species, in Aizawl, Mizoram, India (an Indo-Burma hot spot region). While, the second part was ascribed to the bio-magnetic monitoring stidies. Pertaining to first part of study, highest dust deposition was noted for Ramrikawn (RKN-Med) site on Ficus bengalensis (1.2?mg?cm?2) and lowest in Bauhinia variegate (0.8?mg?cm?2). Further, increased concentration of heavy metals (Fe, Cu and Zn) was recorded at RKN-Med site. Roadside plant leaves of F. bengalensis recorded maximum accumulation of Fe (26.1?mg?kg?1) and Cu (19.5?mg?kg?1) while Cassia auriculata (12.1?mg?kg?1) showed lowest accumulation of Fe. B. variegate (1.88?mg?kg?1) recorded lowest accumulation of Cu. Zn was recorded maximum (48.2?mg?kg?1) in Mangifera indica while B. variegate showed lowest accumulation of 11.3?mg?kg?1 Cu at Ramrikawn site. In relation to second part of the study, M. indica, Ficus benghalensis, Psidium guajava and Artocarpus heterophyllus were found to be efficient in bio-magnetic monitoring because all the magnetic properties (magnetic susceptibility, anhysteretic remanent magnetisation and isothermal remanent magnetisation) were high and significantly correlated with ambient PM (R2?=?0.424 to R2?=?0.998) thus may act as proxy for ambient PM. |
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Keywords: | Urban ecosystem human health magnetic properties Indo-Burma hot spot heavy metals eco-sustainable |
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