Effect of indoor and outdoor emission sources on the chemical compositions of PM2.5 and PM0.1 in residential and school buildings
Air Quality Atmosphere & Health,
Год журнала:
2024,
Номер
17(7), С. 1435 - 1450
Опубликована: Фев. 9, 2024
Язык: Английский
Source apportionment and wet scavenging ability of atmospheric black carbon during haze in Northeast China
Environmental Pollution,
Год журнала:
2024,
Номер
357, С. 124470 - 124470
Опубликована: Июнь 29, 2024
Язык: Английский
Control of atmospheric deposition and hydrodynamic conditions on black carbon distribution in coastal sediments
The Science of The Total Environment,
Год журнала:
2025,
Номер
978, С. 179438 - 179438
Опубликована: Апрель 21, 2025
Язык: Английский
Wet Deposition of Black Carbon: Insights From a Comparative Study of Char/Soot in PM10 and Rainwater
Journal of Geophysical Research Atmospheres,
Год журнала:
2025,
Номер
130(8)
Опубликована: Апрель 23, 2025
Abstract
Wet
scavenging
of
black
carbon
(BC)
is
essential
for
evaluating
their
atmospheric
lifetime
and
radiative
forcing.
However,
it
crucial
to
differentiate
BC
into
char
soot
subgroups,
given
significant
disparities
in
physicochemical
properties
potential
impacts.
We
first
conducted
a
comparative
study
char/soot
PM
10
rainwater,
collected
over
year
urban
Guangzhou,
China.
The
mean
ratio
(∼2.5)
obviously
higher
than
that
rainwater
(∼0.8),
corresponding
wet
efficiency
soot.
Through
sequence
sampling
during
individual
rainfall
events,
we
further
distinguished
the
contributions
in‐cloud
below‐cloud
scavenging,
with
predominantly
contributed
distinct
difference
between
Such
behavior
would
have
substantial
implications
BC,
which
should
be
considered
future
models
accurate
evaluation
its
climate
impact.
Язык: Английский
Chemical and Optical Distinctions Between Elemental Carbon Subcategories Char-EC and Soot-EC: Insights from a Haze Event in North China
Environmental Pollution,
Год журнала:
2025,
Номер
unknown, С. 126306 - 126306
Опубликована: Апрель 1, 2025
Язык: Английский
Characterization of Freshly-Emitted Particles from Poplar Wood Burning: OC/EC, Morphology, and Elemental Analysis Under Varying Ignition Temperatures
Atmospheric Environment,
Год журнала:
2025,
Номер
unknown, С. 121271 - 121271
Опубликована: Май 1, 2025
Язык: Английский
Distinct Sources of Char and Soot Black Carbon Aerosols During Winter Haze at Pair Sites in North China: Source Apportionment From Dual‐Carbon Isotope Constrained PMF
Journal of Geophysical Research Atmospheres,
Год журнала:
2025,
Номер
130(11)
Опубликована: Июнь 5, 2025
Abstract
Char
and
soot
black
carbon
(BC)
are
distinct
in
physicochemical
properties
climate
effects,
but
quantitative
source
apportionment
of
which
ambient
aerosols
remains
limited.
A
comparison
char
fine
particles
megacity
Beijing
its
southwest
upwind
rural
site,
Gucheng,
during
winter
haze
2018
was
conducted,
utilizing
dual‐carbon
isotope
constrained
positive
matrix
factorization
for
apportionment.
BC
concentrations
Gucheng
were
twice
those
Beijing,
with
accounting
90%
at
both
sites.
Despite
similar
char/soot
ratios,
contributions
differed
significantly
between
the
two
Fossil
fuel
combustion
emerged
as
major
(82.1%)
(72.1%),
higher
to
(96.3%
86.2%,
respectively).
Heavy
oil
(51.2%)
predominant
values
from
had
been
previously
underestimated.
Traffic‐related
sources
identified
principal
contributors
(51.2%).
Residential
coal
largest
contributor
(35.3%)
(47.6%)
whereas
biomass
burning
(∼10%
than
Beijing)
also
non‐negligible.
Our
findings
underscore
issue
elevated
Beijing‐Tianjin‐Hebei
region
complexity
urban
environments.
Accurately
quantifying
various
fossil
nonfossil
soot,
developing
comprehensive
emission
inventories,
essential
improving
assessments
effects
on
environment.
Язык: Английский
Understanding the Dynamics of Source-Apportioned Black Carbon in an Urban Background Environment
Atmosphere,
Год журнала:
2024,
Номер
15(7), С. 832 - 832
Опубликована: Июль 11, 2024
This
study
aims
to
delineate
the
characteristics
of
black
carbon
(BC)
in
atmosphere
over
urban
background
environment
Vilnius
(Lithuania)
from
1
June
2021
31
May
2022
using
aethalometer
(Magee
Scientific)
measurements.
The
annual
mean
concentrations
BC
originating
fossil
fuels
(BCff)
and
biomass
burning
(BCbb)
were
found
be
0.63
μg
m−3
with
a
standard
deviation
(SD)
0.67
0.27
µg
(0.35
m−3).
further
findings
highlight
dominance
fossil-fuel-related
throughout
period
(71%)
seasonal
variability
pollution,
biomass-burning-related
making
largest
contribution
during
summer
season
(41%)
smallest
autumn
(23%).
information
provides
valuable
insights
into
sources
dynamics
pollution
region.
composition
on
days
highest
levels
influenced
by
combination
local
regional
factors
every
season.
Additionally,
this
employs
an
advanced
approach
understanding
focusing
high-pollution
(18),
identified
based
daily
mass
concentration
exceeding
95th
percentile,
alongside
analysis
overall
diurnal
variations.
methodology
surpasses
many
those
previous
studies,
offering
comprehensive
examination
pollution.
Язык: Английский