Environmental Geochemistry and Health,
Journal Year:
2024,
Volume and Issue:
46(9)
Published: July 29, 2024
Atmospheric
microplastics
are
important
contributors
to
environmental
contamination
in
aquatic
and
terrestrial
systems
pose
potential
ecological
risks.
However,
studies
on
atmospheric
still
limited
urban
regions
of
the
Tibetan
Plateau,
a
sentinel
region
for
climate
change
under
warming
climate.
In
this
study,
occurrence
risk
were
investigated
samples
suspended
collected
Lhasa
city
during
New
Year
February
2023.
The
results
show
that
average
abundance
was
7.15
±
2.46
MPs
m
Analytical Methods,
Journal Year:
2024,
Volume and Issue:
16(15), P. 2177 - 2197
Published: Jan. 1, 2024
The
escalating
prominence
of
micro-
and
nanoplastics
(MNPs)
as
emerging
anthropogenic
pollutants
has
sparked
widespread
scientific
public
interest.
These
minuscule
particles
pervade
the
global
environment,
permeating
drinking
water
food
sources,
prompting
concerns
regarding
their
environmental
impacts
potential
risks
to
human
health.
In
recent
years,
field
MNP
research
witnessed
development
application
cutting-edge
infrared
(IR)
spectroscopic
instruments.
This
review
focuses
on
advanced
IR
techniques
relevant
instrumentation
analyse
MNPs.
A
comprehensive
literature
search
was
conducted,
encompassing
articles
published
within
past
three
years.
findings
revealed
that
Fourier
transform
(FTIR)
spectroscopy
stands
most
used
technique,
with
focal
plane
array
FTIR
(FPA-FTIR)
representing
cutting
edge
in
spectroscopy.
second
popular
technique
is
quantum
cascade
laser
(QCL-IR)
spectroscopy,
which
facilitated
rapid
analysis
plastic
particles.
Following
closely
optical
photothermal
(O-PTIR)
can
furnish
submicron
spatial
resolution.
Subsequently,
there
atomic
force
microscopy-based
(AFM-IR)
made
it
feasible
MNPs
at
nanoscale
level.
instruments
identified
covered
this
were
compared.
Comparison
metrics
encompass
substrates/filters,
data
quality,
resolution,
acquisition
speed,
processing
cost.
limitations
these
identified,
recommendations
address
proposed.
offer
valuable
guidance
researchers
selecting
suitable
for
experiments,
thereby
facilitating
advancements
aimed
enhancing
our
understanding
health
associated
Microplastics,
Journal Year:
2024,
Volume and Issue:
3(1), P. 82 - 97
Published: Feb. 8, 2024
Micro-
and
nanoplastics
(MNPs)
are
an
important
atmospheric
aerosol
constituent.
However,
there
still
needs
to
be
a
standard
procedure
for
their
sampling
size
fractionation,
which
is
obstacle
the
aggregation
critical
analysis
of
results
obtained
by
different
research
groups.
This
review
focuses
on
fractionation
methodologies
used
MNPs.
Moreover,
streamlined,
simplified
methodology
proposed.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(25), P. 11140 - 11151
Published: June 13, 2024
Microplastic
records
from
lake
cores
can
reconstruct
the
plastic
pollution
history.
However,
associations
between
anthropogenic
activities
and
microplastic
accumulation
are
not
well
understood.
Huguangyan
Maar
Lake
(HML)
is
a
deep-enclosed
without
inlets
outlets,
where
sedimentary
environment
ideal
for
preserving
stable
historical
record.
(size:
10–500
μm)
characteristics
in
HML
core
were
identified
using
Laser
Direct
Infrared
Imaging
system.
The
earliest
detectable
microplastics
appeared
unit
1955
(1.1
items
g–1).
abundance
ranged
n.d.
to
615.2
g–1
1955–2019
with
an
average
of
134.9
g–1.
declined
slightly
during
1970s
then
increased
rapidly
after
China's
Reform
Opening
Up
1978.
Sixteen
polymer
types
detectable,
polyethylene
polypropylene
dominating,
accounting
23.5
23.3%
total
abundance,
size
at
10–100
μm
accounted
80%.
Socioeconomic
factors
dominated
based
on
random
forest
modeling,
contributions
GDP
per
capita,
plastic-related
industry
yield,
crop
yield
were,
respectively,
13.9,
35.1,
9.3%
1955–2019.
contribution
further
by
1.7%
Coarse
sediment
particles
soil
erosion
exacerbated
discharging
into
sediment.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
913, P. 169678 - 169678
Published: Dec. 28, 2023
The
number
of
studies
dealing
with
airborne
microplastics
(MPs)
is
increasing
but
sampling
and
sample
treatment
are
not
standardized,
yet.
Here,
a
fast
reliable
method
to
characterize
MPs
presented.
It
involves
the
study
two
passive
devices
collect
atmospheric
bulk
deposition
(wet
dry
deposition)
three
digestion
methods
(two
alkaline-oxidative
an
oxidative)
treat
samples.
based
on
KOH
NaClO
was
selected
for
mild
organic
matrix
digestion.
In
addition,
some
operational
parameters
high-throughput
quantum
cascade
laser-based
infrared
device
(LDIR)
were
optimized:
effective
automatic
tiered
approach
differentiate
fibres
from
particles
(>90
%
success
in
validation)
criterion
establish
positive
matches
when
comparing
unknown
spectrum
against
spectral
database
(proposed
match
index
>
0.85).
procedural
analytical
recoveries
very
good
(82–90
%)
slightly
lower
(62–73
%).
Finally,
amount
type
deposited
at
sub-urban
area
NW
Spain
evaluated.
Most
common
polymers
Polyethylene
(PE),
Polypropylene
(PP)
terephthalate
(PET).
rates
ranged
98–1220
MP/m2/day,
ca.
1.7
total
collected
particles.
More
than
50
20–50
μm
size
range,
whereas
mostly
50–500
range.
TrAC Trends in Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
178, P. 117859 - 117859
Published: July 9, 2024
Atmospheric
microplastics
(MPs)
are
a
significant
environmental
concern,
necessitating
tailored
analytical
methods
for
specific
sites
like
residential,
public,
and
outdoor
environments.
This
review
addresses
site-
target-specific
challenges
in
sampling,
pretreatment,
quantification
of
atmospheric
MPs.
Sampling
include
wet
dry
deposition,
sweeping,
active
with
classification
based
on
locations.
Circular
diagrams
classify
MP
types
shapes
commonly
found
different
areas,
aiding
identification
key
MPs
Indoors,
PET
fibers
common,
while
outdoors,
PE
fragments
additionally
detected
due
to
long-range
air
transport,
approaches.
Pretreatments
sieving,
digestion,
density
separation,
staining
introduced,
customized
approaches
each
target
MP.
Furthermore,
four
standards
(PET,
PE,
PP,
PS)
analyzed
using
advanced
techniques,
offering
distinct
analyses
type.
These
integrated
aim
provide
guidance
selective
methods,
ensuring
accurate
measurement
site
target.
