Abstract:
:Influence of burning of fireworks on particle size distribution of PM(10) and associated barium (Ba) were studied at a congested residential cum commercial area of Nagpur city, India. Sampling was carried out by cascade impactor having 50% cut-off aerodynamic diameters of <10, 9, 5.8, 4.7, 3.3, 2.1, 1.1, 0.7, and <0.4 μm, 2 days before diwali, during diwali, celebrations of marriage functions, and New Year's Eve. Noticeably, increased levels of PM(10) and Ba were observed during diwali as compared to days before diwali and other activities. PM(10) levels were increased by four to nine times whereas Ba levels were increased by eight to 20 times higher in alveolar region, when compared with the levels observed before diwali. Probability of deposition of Ba mass in alveolar region varied between 14 and 27 ng/h with higher deposition when the burning of fireworks activity was lower near the site. Trimodal distribution of Ba was observed on the first 2 days of diwali at 0.4-2.1, 2.1-4.7, and 4.7 to less than PM(10) micrometer range. While on the third day, it appeared bimodal with 70% contribution in coarse fraction whereas on the fourth day, distribution appeared unimodal with 66% contribution in alveolar region (<0.4-1.1 μm). Distribution of Ba varied with respect to particle size, in accordance with the intensity of the fireworks used on different days and distance between the burning of firecrackers from the monitoring site.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Khaparde VV,Pipalatkar PP,Pustode T,Rao CV,Gajghate DGdoi
10.1007/s10661-011-2008-8subject
Has Abstractpub_date
2012-01-01 00:00:00pages
903-11issue
2eissn
0167-6369issn
1573-2959journal_volume
184pub_type
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