Environmental Quality Management,
Journal Year:
2024,
Volume and Issue:
34(1)
Published: March 10, 2024
Abstract
African
cities
grapple
with
urban
air
pollution
from
traffic‐related
pollutants
(TRAPs).
This
study
investigated
TRAPs
concentration
variations
at
traffic
intersections
(TIs)
in
Ibadan,
Nigeria.
AERMOD
model
was
employed
to
examine
dispersion
25
selected
TIs,
considered
as
volume
sources.
Seasonal
distributions
of
six
(CO,
NO
2
,
SO
TVOCs,
PM
2.5
and
10
)
were
determined
using
meteorological,
topographical,
pollutants’
emission
rates
AERMOD.
Estimated
peak
concentrations
the
studied
generally
higher
rainy
season
than
dry
season,
surpassing
quality
standards
set
by
World
Health
Organization
(WHO)
Nigeria's
National
Environmental
Standards
Regulations
Enforcement
Agency
(NESREA)
during
seasons
except
(24
h)
which
did
not
exceed
NESREA
standard.
highlighted
TIs
significant
contributors
degradation
both
Ibadan
showed
AERMOD's
suitability
for
studies.
Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(4), P. 418 - 418
Published: March 27, 2024
Forecasting
air
quality
plays
a
crucial
role
in
preventing
and
controlling
pollution.
It
is
particularly
significant
for
improving
preparedness
heavily
polluted
weather
conditions
ensuring
the
health
safety
of
population.
In
this
study,
novel
deep
learning
model
predicting
spatio-temporal
variations
introduced.
The
model,
named
graph
long
short-term
memory
with
multi-head
attention
(GLSTMMA),
designed
to
capture
temporal
patterns
spatial
relationships
within
multivariate
time
series
data
related
quality.
GLSTMMA
utilizes
hybrid
neural
network
architecture
effectively
learn
complex
dependencies
correlations
present
data.
extraction
features
involves
utilization
convolutional
(GCN)
collect
based
on
geographical
distribution
monitoring
sites.
resulting
structure
imported
into
(LSTM)
establish
Graph
LSTM
unit,
facilitating
Leveraging
an
encoder-multiple-attention
decoder
framework
formulated
enable
more
profound
efficient
exploration
correlation
research
2019–2021
multi-source
dataset
Qinghai
Province
experimental
assessment.
results
indicate
that
leverages
impact
data,
optimal
accuracy
six
pollutants.
Journal of Hazardous Materials Advances,
Journal Year:
2024,
Volume and Issue:
14, P. 100424 - 100424
Published: March 28, 2024
The
risk
assessment
of
PAHs
in
settled
indoor
dusts
from
different
localities
Awka,
Ekwulobia,
and
Rumuodomaya-Ogale,
Eastern
Nigeria,
were
investigated.
Settled
dust
samples
(n
=
144)
collected
the
windows
floor
using
brush
analysed
for
with
GC-
FID.
Dust
showed
higher
total
concentrations
than
order;
Rumuodomaya-Ogale
>
Ekwulobia
Awka.
3-
4-ring
dominant
window
Awka
all
months,
while
3-ring
compound
Ekwulobia.
PAH
a
significant
difference
across
months
(p<0.05).
In
3,
4,
5-ring
supersede
dust.
This
that
is
major
sink
3-5-ring
PAHs.
compounds;
BaA,
DahA,
Ant,
BaP,
DBA
contributors
to
benzo(a)pyrene
as
toxicity
equivalence
(BaPTEQ)
values
incremental
life
cancer
was
<
1.0
×
10−04
study
area;
hence,
increased
activities
during
COVID-19
lockdown
had
no
effect
on
human
health
populace.
Heliyon,
Journal Year:
2025,
Volume and Issue:
11(2), P. e41762 - e41762
Published: Jan. 1, 2025
Air
quality
has
emerged
as
a
significant
concern
due
to
its
direct
impact
on
human
health.
Over
recent
decades,
India
witnessed
marked
deterioration
in
air
rising
anthropogenic
emissions
and
climate
change.
The
COVID-19
lockdown
offered
unique
opportunity
examine
pollutant
reductions
under
restricted
activities.
This
study
conducted
long-term
analysis
of
five
major
Indian
cities-Delhi,
Kolkata,
Bengaluru,
Hyderabad,
Visakhapatnam-by
analysing
variations
PM2.5,
PM10,
NOx,
NH3,
SO2,
CO,
O3,
incorporating
de-weathering
strategy
isolate
meteorological
influences.
In
Delhi,
we
observed
PM10
(92.50-136.70
μg/m³),
NOx
(62.13-151.91
ppb),
CO
(0.53-0.88
mg/m³),
which
shifted
health
risks
from
the
'extreme'
'low'
category.
Visakhapatnam
also
experienced
notable
declines
levels
(7.50-17.13
ppb).
Conversely,
Hyderabad
exhibited
no
reductions,
AQHI
increased
(+0.97)
concentrations.
Ozone
concentrations
showed
increase
across
cities,
attributed
VOC-limited
effects.
revealed
that
variability
long-range
transport
airmass
played
critical
roles
shaping
These
findings
highlight
complexity
urban
dynamics
underscore
benefits
emission
for
public
International Political Science Review,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
This
study
examines
the
environmental
impacts
of
US
sanctions
on
Iranian
companies
from
2013
to
2023,
finding
significant
increases
in
air
pollution,
energy
consumption
and
industrial
waste.
Although
corporate
governance
social
responsibility
practices
offer
some
mitigation,
they
do
not
fully
offset
negative
effects.
However,
community
capital
completely
neutralizes
damage.
research
contributes
public
policy
discourse
by
emphasizing
complex
unintended
consequences
sustainability.
Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(3), P. 262 - 262
Published: Feb. 22, 2024
Surface
ozone
(O3)
is
influenced
not
only
by
anthropogenic
emissions
but
also
meteorological
factors,
with
wind
direction
being
one
of
the
most
overlooked
factors.
Here,
we
combine
observational
data
both
O3
and
flow
to
compare
variation
in
surface
between
coastal
inland
regions
Fujian,
a
province
southeast
coast
China
complicated
topography.
We
further
conduct
numerical
simulation
using
global
chemical
transport
model,
GEOS-Chem,
interpret
results,
explore
linkages
these
variations
flows,
identify
dominant
processes
for
occurrence
high
that
varies
flows.
The
results
from
observations
over
2015–2021
suggest
that,
regions,
concentrations
show
strong
dependence
on
changes.
On
average,
during
daytime,
when
southeasterly
winds
prevail,
mean
reaches
83.5
μg/m3,
which
5.0
μg/m3
higher
than
its
baseline
values
(the
concentrations),
while
northwesterly
tend
reduce
6.4
μg/m3.
positive
anomalies
are
autumn
summer
spring
winter.
During
nighttime,
onshore
northeasterly
associated
enhanced
levels,
likely
due
airmass
containing
less
NO2,
alleviating
titration
effects.
Over
however,
sensitive
GEOS-Chem
simulations
prevailing
southwesterly
lead
anomaly
reactions
suggesting
photochemical
production
rates.
Furthermore,
aid
transporting
more
outer
into
jointly
elevated
dominates.
When
affected
flows
different
directions,
reaction
do
exhibit
significant
differences
regarding
their
impact
O3.
This
could
be
reasons
difference
distribution
regions.
study
help
deepen
our
understanding
pollution
providing
an
effective
warning
high-O3
episodes.
Journal of Trace Elements and Minerals,
Journal Year:
2023,
Volume and Issue:
4, P. 100074 - 100074
Published: May 25, 2023
The
current
research
attempted
to
evaluate
the
concentrations
of
PM
in
size
segregation
by
analysing
metal
content
and
its
health
effect
on
human
beings
at
traffic
junction.
Higher
levels
(PM2.5–1.0
PM1.0–0.5)
were
observed
(418.55
µg/m3,
442.65
µg/m3)
during
winter
season
while
monsoon
season,
it
was
recorded
as
(75.54
65.64
µg/m3).
Overall
for
PM2.5–1.0
PM1.0–0.5
reported
be
(39.01
(29.84
season.
A
morphological
study
also
evaluated
with
source
identification.
Al,
Ca,
Fe,
Mg,
Mn
found
crustal
elements,
whereas
Cd,
Cr,
Cu,
Zn,
Pb
highly
enriched.
hazard
Quotient
values
higher
comparison
safe
limit
which
has
adverse
effects
health.
1.95
HQ
1.30
respectively,
showed
worry
from
smaller
particles
humans.
Adults'
Lifetime
cancer
risk
(ELCR)
greater
(0.0007)
than
children's
(0.0002).
trend
carcinogenicity
both
segments
Cr(VI)>Pb>Ni.
ELCR
>PM2.5–1.0.
average
carcinogenic
factor
value
revealed
two
times
more
USEPA's
authorized
level
(1
×
10−6)
particles,
according
data,
are
harmful
or
have
a
values.
