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
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
874, P. 162193 - 162193
Published: Feb. 23, 2023
Literature
regarding
microplastics
in
the
atmosphere
has
advanced
recent
years.
However,
studies
have
been
undertaken
isolation
with
minimal
collaboration
and
exploration
of
relationships
between
air,
deposition
dust.
This
review
collates
concentrations
(particle
count
mass-based),
shape,
size
polymetric
characteristics
for
ambient
air
(m3),
(m2/day),
dust
(microplastics/g)
snow
(microplastics/L)
from
124
peer-reviewed
articles
to
provide
a
holistic
overview
analysis
our
current
knowledge.
In
summary,
featured
<1
>1000
microplastics/m3
(outdoor)
microplastic/m3
1583
±
1181
(mean)
(indoor),
consisting
polyethylene
terephthalate,
polyethylene,
polypropylene.
No
difference
(p
>
0.05)
was
observed
indoor
outdoor
or
minimum
0.5).
Maximum
microplastic
sizes
were
larger
indoors
<
0.05).
Deposition
ranged
0.5
1357
microplastics/m2/day
475
19,600
including
polystyrene,
polypropylene,
terephthalate.
Concentrations
varied
0.05),
being
more
abundant
indoors,
potentially
closer
sources/sinks.
maximum
reported
within
Road
2
477
microplastics/g
(mean),
polyvinyl
chloride,
Mean
microplastic/g
(remote
desert)
18
225
microplastics/g,
comprised
polyamide,
Snow
0.1
30,000
microplastics/L,
containing
10
67,000
The
smaller
Although
comparability
is
hindered
by
differing
sampling
methods,
analytical
techniques,
polymers
investigated,
spectral
libraries
inconsistent
terminology,
this
provides
synopsis
knowledge
date
atmospheric
microplastics.
Journal of Hazardous Materials,
Journal Year:
2022,
Volume and Issue:
441, P. 129942 - 129942
Published: Sept. 7, 2022
There
is
an
urgent
need
for
data
on
microplastics
(MPs)
in
uptake
media
relevant
to
humans.
Here
we
apply
Laser
Direct
Infra-Red
(LDIR)
spectroscopy
the
rapid
analysis
of
MP>
10
µm
clean
matrices
such
as
bottled
drinking
water
and
(deposited)
air
samples,
using
strict
QA/QC
criteria.
Nine
bottles
three
different
brands
were
found
contain
average
96
particles/L
(range
7–364,
median
44
particles/L)
with
polymer
abundances
order
polyethylene
terephthalate
and/or
polyurethane
>
polyamide
polyvinylchloride.
Further,
laboratory
household
rooms,
MP
deposition
rates
measured,
ranging
from
0
573
particles
m−2
h−1.
For
these
translate
7
0–16)
consumed
meal.
Polyethylene
polypropylene
most
abundant
polymers.
We
find
a
statistically
significant
positive
relationship
between
total
surface
area
textile
per
unit
room
volume
(m2/m3)
MP.
Power
law
distributions
particle
width,
height,
area,
mass
constructed
both
sample
types,
slopes
1.9
3.8.
LDIR
appears
be
relatively
fast
measurement
method,
recovery
during
preparation
potential
improvement
point.
Environmental Toxicology and Pharmacology,
Journal Year:
2023,
Volume and Issue:
100, P. 104140 - 104140
Published: May 1, 2023
Since
inhalation
is
a
relevant
exposure
route,
studies
using
appropriate
micro/nanoplastic
(MNPLs)
models,
representative
targeted
cells,
and
biomarkers
of
effect
are
required.
We
have
used
lab-made
polyethylene
terephthalate
(PET)NPLs
obtained
from
PET
plastic
water
bottles.
Human
primary
nasal
epithelial
cells
(HNEpCs)
were
as
model
the
first
barrier
respiratory
system.
Cell
internalization
intracellular
reactive
oxygen
species
(iROS)
induction,
well
effects
on
mitochondria
functionality
in
modulation
autophagy
pathway,
evaluated.
The
data
indicated
significant
cellular
uptake
increased
levels
iROS.
Furthermore,
loss
mitochondrial
membrane
potential
was
observed
exposed
cells.
Regarding
PETNPLs
significantly
increases
LC3-II
protein
expression
levels.
also
induced
p62.
This
study
showing
that
true-to-life
can
alter
pathway
HNEpCs.
