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2020 ; 11
(7
): 1127-1141
Nephropedia Template TP
gab.com Text
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Influence of fireworks emission on aerosol aging process at lower troposphere and
associated health risks in an urban region of eastern central India
#MMPMID32322156
Mahilang M
; Deb MK
; Nirmalkar J
; Pervez S
Atmos Pollut Res
2020[Jul]; 11
(7
): 1127-1141
PMID32322156
show ga
To study the influence of fireworks in atmospheric aerosols and their effect on
health during the extreme firework days, fireworks tracer metals and carbonaceous
species in size-distributed aerosols in the lower troposphere at Raipur in
eastern central India were investigated during the 2018 Deepawali festival.
Aerosol samples were collected, before Deepawali period (BDP, n = 5), during
Deepawali period (DDP, n = 5) and after Deepawali period (ADP, n = 5). Bimodal
size-distribution with intense fine mode peak was found for Na during DDP.
Bimodal distribution with fine mode intense peak was found for K during DDP. The
bimodal size distribution of K was found common for other events because of
biomass burning emissions, whereas high intense peak during DDP indicated mixed
sources from biomass burning and fireworks. During DDP, K and Ca were well
correlated (r(2) = 0.93) together. Strong metal-metal correlations were found
between the following pairs, Zn-Fe, Cu-Fe and Cu-Ca, which indicated the similar
firecrackers burning source. The atmospheric aging of aerosols was also found
significantly high during fireworks days. Aging of aerosols were higher because
of heterogeneous reactions of SO(2) and NO(x) on aerosols directly emitted from
fireworks. The observed high values of inhalation dose of elemental carbon during
DDP period imposed higher risk of respiratory diseases. This study has provided
carbonaceous fractions composition data as a tool to detect the aging processes
of fireworks in ultra-fine, fine and coarse mode particles during the extreme
firework days. Inhalation doses were calculated to establish potential influence
on human health.