PM2.5 Speciation of Beta Attenuation Monitor Filters During Wildfire Smoke Events
Kelly Chen,
No information about this author
Zhongmin Wang,
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Jeff Wagner
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et al.
Atmosphere,
Journal Year:
2025,
Volume and Issue:
16(4), P. 361 - 361
Published: March 22, 2025
Beta
attenuation
monitors
(BAMs)
are
widely
used
for
the
regulatory
monitoring
of
fine
particulate
matter
(PM2.5)
and
fence
line
industrial
sites.
The
elemental
analysis
BAM
filter
tapes
potentially
could
enable
additional
source
PM2.5
attribution.
However,
chemical
characterization
glass
fiber
filters
is
hindered
by
high
background
metal
values.
A
sample
preparation
method
was
developed
using
ultrasonic
extraction
from
spots
in
nitric
acid
metals
inductively
coupled
plasma–mass
spectrometry
(ICP-MS)
scanning
electron
microscopy–energy-dispersive
X-ray
spectroscopy
(SEM-EDS).
To
demonstrate
utility
this
method,
were
analyzed
wildfire
smoke
periods
San
Francisco
Bay
Area
California
Fall
2023
indicated
elevated
levels
chromium
compared
to
a
non-wildfire
period
Spring
2023.
SEM-EDS
tape
probe
individual
morphology,
but
it
only
detected
Fe
Ba
at
above
blank
media.
be
future
events
extend
beta
monitor
monitoring.
Language: Английский
Personal exposure to PM2.5 and its chemical components in individuals with COPD: associations with lifestyle and lung function
Jiyoung Hwang,
No information about this author
Eri Saikawa,
No information about this author
Alexander Avramov
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et al.
Environment International,
Journal Year:
2025,
Volume and Issue:
unknown, P. 109560 - 109560
Published: May 1, 2025
Language: Английский
Satellite data to support air quality assessment and management
Journal of the Air & Waste Management Association,
Journal Year:
2025,
Volume and Issue:
75(6), P. 429 - 463
Published: May 28, 2025
Satellite
data
have
long
been
recognized
as
valuable
for
air
quality
applications.
These
applications
are
in
a
stage
of
rapid
growth:
new
geostationary
satellites
provide
hourly
or
sub-hourly
data;
improvements
algorithms
convert
measured
wavelengths
into
retrievals
atmospheric
constituents;
advances
machine
learning
support
improved
estimates
near-surface
pollution;
and
growing
interest
among
managers
has
led
to
range
satellite
Considering
mainly
activities
the
United
States
under
Clean
Air
Act,
we
discuss
proven
relevant
management,
including:
informing
epidemiological
studies
health
risk
assessments
setting
regulatory
standards;
evaluating
models;
constraining
emissions
inventories;
supporting
Exceptional
Event
Demonstrations
through
tracking
wildfire
plumes
other
sources;
characterizing
emission
patterns
ozone-forming
chemistry
State
Implementation
Plans;
improving
forecasting;
long-term
trends
evaluate
impact.
professionals
increasingly
using
these
related
analyses,
but
barriers
remain.
This
review
provides
summary
products
used
assessments;
progress
observations
deriving
surface-level
information
across
scales;
their
use
management.Implications:
The
covers
advancements
over
last
15
years.
Success
with
applications,
especially
PM2.5
NO2,
include
assessment,
inventories,
short-
relevance.
Solutions
co-developed
between
researchers
practitioners
show
promise
continued
value
Language: Английский