Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(12), P. 1536 - 1536
Published: Dec. 21, 2024
Studying
chemical
constituents
in
rainwater
can
provide
insights
into
the
origin,
characteristics,
concentration,
and
processes
involved
clearing
atmospheric
pollutants.
This
study
investigated
spatial–temporal
variations
chemistry
characteristics
a
rapidly
urbanizing
area
of
Shenzhen
from
2007
to
2022.
The
mean
pH
during
2007–2022
was
5.12
±
0.45,
significantly
higher
than
4.51
recorded
2006.
electrical
conductivity
(EC)
rainfall
15.79
2.63
μS/cm
showed
progressive
decrease
over
years.
Human
activities
influenced
trends
SO42−,
which
decreased,
while
NO3−
Cl−
increased
time.
cations
Ca2+
NH4+
Mg2+,
Na+,
K+
increased.
In
recent
years,
Na+
Cl−,
typical
sea-salt
ions,
became
dominant
with
continually
rising
contribution.
also
revealed
that
has
been
affected
by
both
sulfuric
nitric
acid
rain,
formally
ushering
acid-type
era.
Spatial
chemicals
were
observed,
especially
for
conductivity,
attributed
urban
growth,
distance
coast,
industrial
development.
Moreover,
total
ion
concentration
demonstrated
high
values
spring
low
summer
due
significant
effect
precipitation.
GEOGRAPHY ENVIRONMENT SUSTAINABILITY,
Journal Year:
2024,
Volume and Issue:
17(3), P. 70 - 84
Published: Oct. 7, 2024
Atmospheric
precipitation
acts
as
a
significant
pathway
for
pollutants
from
the
atmosphere
to
Earth’s
surface,
and
analyzing
urban
data
on
intensity,
fallout
regime,
transfer
patterns,
solid
particle
content
helps
identify
pollution
sources.
For
first
time
in
Moscow
megacity,
levels
of
soluble
forms
potentially
hazardous
elements
(PHEs)
atmospheric
were
studied
during
whole
summer
season
May–September
2019.
The
concentrations
Al,
As,
B,
Ba,
Be,
Bi,
Cd,
Ce,
Co,
Cu,
Fe,
La,
Li,
Mn,
Ni,
P,
Pb,
Rb,
Sb,
Sn,
Sr,
Zn
determined
using
inductively
coupled
plasma
mass
spectrometry
atomic
emission
spectroscopy
methods.
research
underscores
crucial
role
washing
PHEs
out
atmosphere.
In
May
September,
surpass
warm-season
average.
Notable
contamination
stems
elevated
traffic
vacations,
extensive
burning
plant
debris
wood,
pollen
transport.
Summer
months
are
characterized
by
reduced
forest
agricultural
fires,
traffic,
increased
vegetation,
leading
lower
PHE
concentrations,
especially
July,
with
typical
amount
contributing
pollutant
dispersion.
Elevated
September
observed
due
load,
biomass
burning,
expansion
unvegetated
soil
areas.
Rainwater
is
enriched
Zn,
sourced
vehicle
emissions,
particles,
industry,
construction
dust,
fires.
Moderate
enrichment
Sn
also
occurs
episodically.
Regression
analysis
highlights
particles’
major
source
rainwater,
longer
antecedent
dry
periods
higher
acidity
level
rain
intensifying
accumulation
PHEs.
Long-range
transport
plays
lesser
role,
Southern
Northern
Europe,
Western
Siberia,
central
part
European
Russia
meaningfully.
Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(12), P. 1536 - 1536
Published: Dec. 21, 2024
Studying
chemical
constituents
in
rainwater
can
provide
insights
into
the
origin,
characteristics,
concentration,
and
processes
involved
clearing
atmospheric
pollutants.
This
study
investigated
spatial–temporal
variations
chemistry
characteristics
a
rapidly
urbanizing
area
of
Shenzhen
from
2007
to
2022.
The
mean
pH
during
2007–2022
was
5.12
±
0.45,
significantly
higher
than
4.51
recorded
2006.
electrical
conductivity
(EC)
rainfall
15.79
2.63
μS/cm
showed
progressive
decrease
over
years.
Human
activities
influenced
trends
SO42−,
which
decreased,
while
NO3−
Cl−
increased
time.
cations
Ca2+
NH4+
Mg2+,
Na+,
K+
increased.
In
recent
years,
Na+
Cl−,
typical
sea-salt
ions,
became
dominant
with
continually
rising
contribution.
also
revealed
that
has
been
affected
by
both
sulfuric
nitric
acid
rain,
formally
ushering
acid-type
era.
Spatial
chemicals
were
observed,
especially
for
conductivity,
attributed
urban
growth,
distance
coast,
industrial
development.
Moreover,
total
ion
concentration
demonstrated
high
values
spring
low
summer
due
significant
effect
precipitation.
