Environmental Sciences Europe,
Journal Year:
2024,
Volume and Issue:
36(1)
Published: Nov. 7, 2024
Microplastic
pollution
is
a
pressing
issue
with
far-reaching
environmental
and
public
health
consequences.
This
study
delves
into
the
intricacies
of
predicting
microplastic
during
COVID-19
pandemic
in
Tehran,
Iran.
The
research
introduces
rigorous
comparative
analysis
that
evaluates
predictive
prowess
Deep
Random
Forest
algorithm
established
benchmarks,
such
as
Forest,
Decision
Trees,
Gradient
Boosting,
AdaBoost,
Support
Vector
Machine.
evaluation
process
encompasses
meticulous
70–30
training–testing
split
main
data
set.
Performance
assessed
by
metrics,
including
ROC
statistical
errors.
primary
set
distinct
categories,
household
wastes,
hospital
clinics
unknown-originated
susceptible
waste
which
categorized
Infected
items,
PPEs,
SUPs,
Test
kits,
Medical
packages,
Unknown-originated
mircoplastic
waste.
Deliberately,
this
was
partitioned
training
testing
subsets,
ensuring
robustness
reliability
subsequent
analyses.
Approximately
70%
database
allocated
to
set,
remaining
30%
constituting
findings
underscore
proposed
algorithm's
supremacy,
boasting
an
impressive
AUC
=
0.941.
exceptional
score
reflects
model's
precision
categorizing
microplastics.
These
results
have
profound
implications
for
management
pandemics.
positions
model
potent
tool
prediction,
encouraging
further
refine
models
tap
new
sources
more
comprehensive
understanding
dynamics
urban
settings.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(21), P. 9071 - 9081
Published: May 15, 2024
Little
research
exists
on
the
magnitude,
variability,
and
uncertainty
of
human
exposure
to
airborne
micro-
nanoplastics
(AMNPs),
despite
their
critical
role
in
MNPs.
We
probabilistically
estimate
global
intake
AMNPs
through
three
main
pathways:
indoor
inhalation,
outdoor
ingestion
during
meals,
for
both
children
adults.
The
median
inhalation
AMPs
is
1,207.7
(90%
CI,
42.5–8.48
×
104)
1,354.7
47.4–9.55
N/capita/day
adults,
respectively.
annual
13.18
mg/capita/a
19.10
which
approximately
one-fifth
one-third
mass
a
standard
stamp,
assuming
consistent
daily
medians.
majority
AMP
number
occurs
while
deposited
meals
contributes
most
terms
mass.
Furthermore,
ANP
9,638.1
N/day
(8.23
10–6
μg/d)
5,410.6
(4.62
respectively,
compared
5.30
105
(5.79
10–4
6.00
(6.55
via
inhalation.
Considering
increased
toxicity
smaller
MNPs,
significant
ANPs
inhaled
warrants
great
attention.
Collaborative
efforts
are
imperative
further
elucidate
combat
current
MPN
risks.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
469, P. 134017 - 134017
Published: March 13, 2024
Our
study
explores
the
pressing
issue
of
micro-
and
nanoplastics
(MNPs)
inhalation
their
subsequent
penetration
into
brain,
highlighting
a
significant
environmental
health
concern.
We
demonstrate
that
MNPs
can
indeed
penetrate
murine
warranting
further
investigation
neurotoxic
effects
in
humans.
then
proceed
to
test
impact
at
environmentally
relevant
concentrations,
with
focusing
on
variations
size
shape.
findings
reveal
these
induce
oxidative
stress,
cytotoxicity,
neurodegeneration
human
neurons,
cortical
neurons
being
more
susceptible
than
nociceptors.
Furthermore,
we
examine
role
biofilms
MNPs,
demonstrating
serve
as
vehicle
for
pathogenic
significantly
exacerbate
effects.
This
sequence
investigations
reveals
minimal
accumulation
cause
stress
risking
brain
highlights
need
understand
neurological
consequences
inhaling
MNPs.
Overall,
our
developed
vitro
testing
battery
has
significance
elucidating
factors
associated
pathological
mechanisms
neurons.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(16), P. e36449 - e36449
Published: Aug. 1, 2024
Highlights•Indoor
dust
all
around
Dhaka
contained
a
high
abundance
of
microplastics.•Fiber's
length
in
the
range
50–250
μm
were
predominant.•Deposition
rates
microplastics
varied
based
on
different
indoor
factors.•Various
polymers
identified
atmospheric
Dhaka.AbstractMicroplastic
(MP)
contamination
has
become
concern
due
to
its
ubiquitous
presence.
Recent
studies
have
found
MPs
be
present
multiple
human
organs.
This
study
was
carried
out
evaluate
presence
and
characterize
deposition.
Deposited
collected
from
fifteen
households
city.
The
samples
underwent
quantification
using
stereomicroscopy.
Fourier
Transform
Infrared
(FTIR)
spectroscopy
performed
understand
polymer
composition.
size
group
ranging
50
250
most
dominant.
deposition
7.52
×
10³
MPs/m2/day
66.29
MPs/m2/day,
with
mean
rate
being
34
MPs/m2/day.
Notably,
number
occupants
height
sampling
location
above
ground
level
influence
rates.
Various
polymers,
including
polyester
(PET),
polyethylene
(PE),
Nylon,
polypropylene
(PP),
identified.
estimated
inhalation
exposure
2986
±
1035
MPs/kg-BW/day.
work
highlights
need
for
additional
research
explore
microplastic
potential
effect
health
densely
inhabited
severely
polluted
megapolis
Dhaka,
Bangladesh.Graphical
abstract
Environmental Pollution,
Journal Year:
2024,
Volume and Issue:
361, P. 124629 - 124629
Published: July 27, 2024
The
global
apprehension
regarding
the
ubiquitous
presence
of
microplastics
(MPs)
and
their
associated
health
risks
underscore
a
significant
challenge.
However,
our
understanding
on
occurrence
characteristics
this
emerging
class
pollutants
in
different
environmental
compartments
remains
limited.
For
instance,
despite
housing
approximately
20-25%
population,
evidence
atmospheric
MPs
Indian
Subcontinent
is
exceedingly
rare.
Hence,
we
for
first-time
present
data
depositional
flux,
chemical
composition,
morphological
features
collected
from
foothills
Himalayas.
total
number
samples
ranged
65
to
752
particles,
with
an
average
317
±
171
particles
count.
flux
was
2256
1221
particles/m
Environmental Science Atmospheres,
Journal Year:
2024,
Volume and Issue:
4(10), P. 1161 - 1169
Published: Jan. 1, 2024
Atmospheric
microplastics
in
Hangzhou
were
predominantly
fibers,
with
tires
(27.0%)
and
PET
(19.7%)
as
the
dominant
types.
The
annual
MP
dry
deposition
flux
urban
area
was
estimated
to
be
16.9
±
2.9
tons.
