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.
Air Quality Atmosphere & Health,
Journal Year:
2024,
Volume and Issue:
17(9), P. 1851 - 1866
Published: March 20, 2024
Abstract
Microplastics
(MPs)
have
become
a
growing
concern
in
the
context
of
environmental
pollution,
with
an
increasing
focus
on
their
presence
indoor
environments,
including
university
facilities.
This
study
investigates
and
characteristics
MPs
different
environments.
Initial
examination
ambient
involved
physical
characterization
through
optical
microscopy,
focusing
classifying
by
shape
color.
Various
types
MPs,
fibers,
fragments,
pellets,
foams,
films,
lines,
were
identified,
most
common
colors
being
black,
red,
blue,
brown.
Fragments
predominant
type
found,
although
accurately
quantifying
numbers
proved
challenging
due
to
dense
sample
content.
These
displayed
rough
irregular
margins
suggestive
abrasion.
Subsequent
chemical
elemental
was
conducted
using
micro-Raman
SEM-EDX,
revealing
25
PA
66,
PTFE,
PP,
HDPE,
PE.
The
indicates
that
inhabitants
are
exposed
airborne
(≥
2.5–336.89
μm)
at
inhalation
rates
13.88–18.51
MPs/m
3
180–240
daily.
exhibited
significant
variations
size,
distribution
varied
among
environments
studied.
SEM-EDX
analysis
revealed
elements
identified
C,
O,
F,
Na,
Cl,
Al,
Si,
others
consistently
detected.
research
is
first
comprehensively
analyze
nine
active
sampling.
Identifying
reducing
MP
contamination
these
facilities
might
stimulate
more
awareness,
promote
extensive
scientific
investigation,
facilitate
development
informed
policies.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
278, P. 116426 - 116426
Published: May 8, 2024
The
increase
of
micro-
and
nano-plastics
(MNPs)
in
aquatic
environments
has
become
a
significant
concern
due
to
their
potential
toxicological
effects
on
ecosystems,
food
web
dynamics,
human
health.
These
plastic
particles
emerge
from
range
sources,
such
as
the
breakdown
larger
waste,
consumer
products,
industrial
outputs.
This
review
provides
detailed
report
transmission
dangers
MNPs
environmental
behavior,
interactions
within
webs,
emphasizing
toxic
impact
marine
life.
It
explores
relationship
between
particle
size
toxicity,
distribution
different
tissues,
process
trophic
transfer
through
web.
MNPs,
once
consumed,
can
be
found
various
organs,
including
digestive
system,
gills,
liver.
Their
consumption
by
lower
level
organisms
facilitates
progression
up
chain,
potentially
leading
bioaccumulation
biomagnification,
thereby
posing
substantial
risks
health,
reproduction,
behavior
species.
work
also
how
persistence
bioaccumulation,
pose
biodiversity
disrupt
relationships.
addresses
implications
for
particularly
contaminated
seafood,
highlighting
direct
indirect
pathways
which
humans
are
exposed
these
pollutants.
Furthermore,
highlights
recommendations
future
research
directions,
integration
ecological,
toxicological,
health
studies
inform
risk
assessments
develop
mitigation
strategies
address
global
challenge
pollution
environments.
Plastic
debris,
including
nanoplastic
particles
(NPPs),
has
emerged
as
an
important
global
environmental
issue
due
to
its
detrimental
effects
on
human
health,
ecosystems,
and
climate.
Atmospheric
processes
play
role
in
the
transportation
fate
of
plastic
environment.
In
this
study,
a
high-resolution
time-of-flight
aerosol
mass
spectrometer
(HR-ToF-AMS)
was
employed
establish
first
online
approach
for
identification
quantification
airborne
submicrometer
polystyrene
(PS)
NPPs
from
laboratory-generated
ambient
aerosols.
The
fragmentation
ion
C
Discover Environment,
Journal Year:
2024,
Volume and Issue:
2(1)
Published: March 18, 2024
Abstract
The
pollution
caused
by
microplastics
(MPs)
is
a
growing
concern
on
global
scale,
especially
considering
the
significant
proportion
of
time
that
individuals
spend
indoors.
contamination
in
question
has
potential
to
directly
impact
human
population
through
exposure
indoor
dust
and
air.
This
research
undertook
comprehensive
analysis
deposition
MPs
university
classrooms,
employing
various
investigative
tools.
present
study
aimed
comprehensively
analyze
physical
chemical
properties
found
classrooms.
Analyzing
samples
under
stereomicroscope,
predominant
were
identified
as
fibers
varied
colors,
mainly
attributed
clothing.
Sizes
these
significantly
across
different
with
general
average
size
range
120–2222
µm.
observed
morphological
changes
MPs,
including
cracks
grooves,
hint
at
degradation
into
nanosized
plastics
over
time.
observation
raises
concerns
about
increased
concentrations
nanoplastics
environments.
Using
µRaman
analysis,
eleven
types
identified,
potentially
originating
from
clothing,
shoes,
stationery.
majority
polyamide
6,
polypropylene,
12.
scanning
electron
microscope
energy-dispersive
X-ray
spectroscopy
(SEM–EDX)
technique
unveiled
elemental
composition
carbon,
fluorine,
oxygen
being
dominant.
findings
align
past
studies
but
highlight
need
understand
MPs'
structural
components
any
possible
contaminants.
Compared
existing
literature,
this
adopts
methodological
approach
combining
optical
microscopy,
µRaman,
SEM–EDX,
enriching
knowledge
MP
aiding
future
directions.
Environmental Monitoring and Assessment,
Journal Year:
2024,
Volume and Issue:
196(5)
Published: April 25, 2024
Abstract
The
potentially
harmful
effects
of
consuming
toxic
elements
(PTEs)
and
microplastics
(MPs)
regularly
via
drinking
water
are
a
significant
cause
for
worry.
This
study
investigated
PTEs
(Cd,
Cu,
Cr,
Ni,
Pd,
Zn,
Co),
MPs,
turbidity,
pH,
conductivity,
health
risk
assessment
in
the
treatment
plant
Kielce,
Poland.
Zn
had
highest
concentrations
throughout
facility,
whereas
Cd,
Pb,
Co
lower
(<
0.1
µg/L).
order
among
specified
was
like
Zn˃Cu˃Ni˃Cr˃Cd˃Pb
Co.
minimum
turbidity
0.34,
maximum
1.9
NTU.
range
pH
samples
6.51—7.47.
conductivity
1,203—1,445
ms
samples.
These
identified
MPs
were
categorized
into
fiber
fragments.
color
these
blue,
red,
black,
green,
transparent.
size
196
4,018
µm,
while
average
2,751
±
1,905
µm.
concentration
per
liter
108.88
55.61.
listed
C,
O,
Na,
Mg,
Al,
Si,
K,
Ca,
Ti.
Fe
predominant
seen
using
EDX.
HQ
values
less
than
one
adults
children.
human
associated
with
all
detected
revealed
that
exhibit
satisfactory
degree
non-carcinogenic
adverse
risk.
HI
children
age
groups
one.
In
most
samples,
carcinogenic
value
exceeds
threshold
10
−6
.
MP
should
be
periodically
monitored
to
minimize
consumers'
environmental
pollution
risks.