Characterization of PM 10 over urban and rural sites of Rajnandgaon, central India

Balram Ambade ()

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2016, vol. 80, issue 1, 589-604

Abstract: The main aim of this study is to determine the water-soluble species of PM 10 (particles having an aerodynamic diameter less than 10 μm) in urban and rural sites of Rajnandgaon district, central India, in 2009. The samples were collected on quartz fiber filters and analyzed for the major water-soluble ions Cl − , $${\text{NO}}_{3}^{ - }$$ NO 3 - , $${\text{SO}}_{4}^{{2 - }}$$ SO 4 2 - , $${\text{NH}}_{4}^{ + }$$ NH 4 + , Na + , K + , Mg 2+ and Ca 2+ parameters, employing ion chromatograph. These species show large spatial and temporal variations. On urban site, the ambient PM 10 concentration has been observed to be the highest 167 ± 64 μg m −3 (winter) followed by 141 ± 65 μg m −3 (post-monsoon), 112 ± 53 μg m −3 (pre-monsoon) and lowest 34 ± 13 μg m −3 (high monsoon), whereas in rural background, the PM 10 concentration was highest 153 ± 54 μg m −3 (winter) followed by 122 ± 53 μg m −3 (post-monsoon), 102 ± 39 μg m −3 (pre-monsoon) and lowest 32 ± 11 μg m −3 (high monsoon). The measured concentrations were excess of annual averages specified by the Indian National Ambient Air Quality Standards of PM 10 60 μg m −3 . Simultaneously, the measurement of organic carbon (OC) and elemental carbon (EC) was also taken. The annual concentration of OC and EC in urban site was found to be 5.9 and 4.8 μg m −3 , but in the rural site, the concentration was 3.11 and 2.78 μg m −3 with OC/EC ratios 1.90 and 1.73 in urban and rural sites, respectively. Higher levels were obtained at urban site as compared to rural site. This suggested that the urban site exhibited a more serious climatic impact on the background air. Copyright Springer Science+Business Media Dordrecht 2016

Keywords: Water-soluble species; Spatial and temporal variations; PM 10; OC; EC (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s11069-015-1985-2

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