Effect of seasonal variation on dust samples of a winter fog affected urban environment of India, South East Asia
| Autor: | Munmun Chakarvorty, Ambalika Niyogi, Jayanta Kumar Pati, K. Prakash |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Magnetic measurements
010504 meteorology & atmospheric sciences Range (biology) Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Soil Science Heavy metals 010501 environmental sciences Seasonality Atmospheric sciences medicine.disease 01 natural sciences Pollution Analytical Chemistry medicine Environmental Chemistry Environmental science South east asia Waste Management and Disposal Urban environment 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 97:1266-1282 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067319.2017.1408805 |
| Popis: | Physical and chemical characteristics of leaf dust (LD) samples, collected between 2011 and 2013, of a severely winter fog affected and polluted urban environment (Allahabad, India) of Indo-Gangetic plain are presented in this study. The weather changes in the study area are grouped into three effective annual seasonal periods – winter fog, pre-monsoon and post-monsoon. The pronounced impact of seasonal variations is observed in LD characteristics, as ~46% of the winter fog period samples ranges in size between 2.5 and 20 µm with high magnetic susceptibility (up to 938.22 × 10−8 m3 kg−1). In comparison, 35% of the LD from pre-monsoon period occurs in the size range of 100–300 µm with low magnetic susceptibility (up to 43.29 × 10−8 m3 kg−1). The fractal analysis involving submicroscopic clast dimension of LD also reveals a seasonal influence. The toxic metals (Pb, Zn, Cd, Cr and Ni) in LD belonging to winter fog and post-monsoon periods increase in comparison to samples from pre-monsoon time. Multi... |
| Databáze: | OpenAIRE |
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