Chemosphere,
Год журнала:
2024,
Номер
368, С. 143736 - 143736
Опубликована: Ноя. 1, 2024
The
potential
health
implications
of
environmental
micro/nanoplastics
(MNPLs)
are
increasingly
concerning.
Beyond
exposure,
other
sources
such
as
food
packaging,
including
herbal/teabags,
may
also
be
significant.
This
study
investigates
the
release
MNPLs
from
three
commercially
available
teabags.
By
simulating
tea
preparation,
MNPL
samples
were
extracted
and
characterized
using
a
range
analytical
techniques:
scanning
electron
microscopy
(SEM),
transmission
(TEM),
attenuated
total
reflectance/Fourier
transform
infrared
spectroscopy
(ATR-FTIR),
dynamic
light
scattering
(DLS),
laser
Doppler
velocimetry
(LDV),
nanoparticle
tracking
analysis
(NTA).
results
confirmed
that
teabags
made
nylon-6
(NY6),
polypropylene
(PP),
cellulose
(CL)
microfibers
nano-range
particles
(NPLs)
present
in
leachates.
NTA
data
revealed
number
released
NPLs
was
1.20
×
10
Analytical and Bioanalytical Chemistry,
Год журнала:
2023,
Номер
415(15), С. 3007 - 3031
Опубликована: Апрель 27, 2023
A
comprehensive
physicochemical
characterization
of
heterogeneous
nanoplastic
(NPL)
samples
remains
an
analytical
challenge
requiring
a
combination
orthogonal
measurement
techniques
to
improve
the
accuracy
and
robustness
results.
Here,
batch
methods,
including
dynamic
light
scattering
(DLS),
nanoparticle
tracking
analysis
(NTA),
tunable
resistive
pulse
sensing
(TRPS),
transmission
electron
microscopy
(TEM),
scanning
(SEM),
as
well
separation/fractionation
methods
such
centrifugal
liquid
sedimentation
(CLS)
field-flow
fractionation
(FFF)-multi-angle
(MALS)
combined
with
pyrolysis
gas
chromatography
mass
spectrometry
(pyGC-MS)
or
Raman
microspectroscopy
(RM)
were
evaluated
for
NPL
size,
shape,
chemical
composition
measurements
quantification.
set
representative/test
particles
different
natures,
(i)
polydisperse
polyethylene
(PE),
(ii)
(doped)
polystyrene
(PS)
NPLs,
(iii)
titanium
dioxide,
(iv)
iron
oxide
nanoparticles
(spherical
elongated),
was
used
assess
applicability
limitations
selected
methodologies.
Particle
sizes
number-based
concentrations
obtained
by
(DLS,
NTA,
TRPS)
comparable
monodisperse
spherical
samples,
while
higher
deviations
observed
polydisperse,
agglomerated
non-spherical
particles,
especially
methods.
CLS
TRPS
offer
further
insight
increased
size
resolution,
detailed
morphological
information
can
be
derived
(EM)-based
approaches.
Combined
FFF
coupled
MALS
RM
provide
complementary
on
physical
properties
online
measurements,
pyGC-MS
fractions
identification
polymer
(vs.
inorganic
particles)
their
offline
(semi)quantification.
However,
in
complex
will
continue
present
serious
without
significant
improvements
sample
preparation.
The Science of The Total Environment,
Год журнала:
2024,
Номер
919, С. 170592 - 170592
Опубликована: Фев. 12, 2024
The
expanded
uses
of
bioplastics
require
understanding
the
potential
health
risks
associated
with
their
exposure.
To
address
this
issue,
Drosophila
melanogaster
as
a
versatile
terrestrial
in
vivo
model
was
employed,
and
polylactic
acid
nanoplastics
(PLA-NPLs),
proxy
for
bioplastics,
were
tested
material
model.
Effects
determined
larvae
exposed
4
days
to
different
concentrations
(25,
100,
400
μg/mL)
463.9
±
129.4
nm
PLA-NPLs.
Transmission
electron
microscopy
(TEM)
scanning
microscope
(SEM)
approaches
permitted
detection
PLA-NPLs
midgut
lumen
larvae,
interacting
symbiotic
bacteria.
Enzymatic
vacuoles
observed
carriers,
collecting
enabling
crossing
peritrophic
membrane,
finally
internalizing
into
enterocytes.
Although
no
toxic
effects
egg-to-adult
survival,
cell
uptake
causes
cytological
disturbances
formation
large
vacuoles.
translocation
across
intestinal
barrier
demonstrated
by
presence
hemolymph.
PLA-NPL
exposure
triggered
damage,
oxidative
stress,
DNA
inflammation
responses,
evaluated
via
wide
set
marker
genes.
Collectively,
these
structural
molecular
interferences
caused
generated
high
levels
stress
damage
hemocytes
larvae.
point
out
need
further
studies
aiming
deepen
before
adopting
safe
plastic
alternative.
Journal of Toxicology and Environmental Health Part B,
Год журнала:
2024,
Номер
27(4), С. 153 - 187
Опубликована: Март 22, 2024
The
widespread
production
and
use
of
plastics
have
resulted
in
accumulation
plastic
debris
the
environment,
gradually
breaking
down
into
smaller
particles
over
time.
Nano-plastics
(NPs)
microplastics
(MPs),
defined
as
than
100
nanometers
5
millimeters,
respectively,
raise
concerns
due
to
their
ability
enter
human
body
through
various
pathways
including
ingestion,
inhalation,
skin
contact.
Various
investigators
demonstrated
that
these
may
produce
physical
chemical
damage
cells,
tissues,
organs,
disrupting
cellular
processes,
triggering
inflammation
oxidative
stress,
impacting
hormone
neurotransmitter
balance.
In
addition,
micro-
nano-plastics
(MNPLs)
carry
toxic
chemicals
pathogens,
exacerbating
adverse
effects
on
health.
magnitude
nature
are
not
yet
fully
understood,
requiring
further
research
for
a
comprehensive
risk
assessment.
Nevertheless,
evidence
available
suggests
environment
potential
uptake
causes
concern.
Urgent
measures
reduce
pollution
limit
exposure
MNPLs
necessary
safeguard
health
environment.
this
review,
current
knowledge
regarding
influence
is
summarized,
toxicity
mechanisms,
pathways,
outcomes
across
multiple
organs.
critical
need
additional
also
emphasized
comprehensively
assess
risks
posed
by
degradation
inform
strategies
addressing
emerging
environmental
challenge.
Finally,
new
directions
proposed
evaluation
gene
regulation
associated
with
exposure.
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
477, С. 135299 - 135299
Опубликована: Июль 22, 2024
The
increasing
accumulation
of
small
plastic
particles,
in
particular
microplastics
(>1
µm
to
5
mm)
and
nanoplastics
(<
1
µm),
the
environment
is
a
hot
topic
our
rapidly
changing
world.
Recently,
studies
were
initiated
better
understand
behavior
micro-
(MNP)
within
complex
matrices
like
soil,
as
well
their
characterization,
incorporation
potential
toxicity
terrestrial
biota.
However,
there
remains
significant
knowledge
gaps
understanding
wide-extent
impacts
MNP
on
invertebrates.
We
first
summarized
facts
global
pollution
generation
MNP.
Then,
we
focused
compiling
existing
literature
examining
consequences
exposure
diversity
investigated
biological
endpoints
(from
molecular
individual
levels)
compiled
get
comprehension
effects
according
different
factors
such
shape,
polymer
type,
organism,
concentration
duration.
sublethal
are
acknowledged
literature,
yet
no
general
conclusion
was
drawn
highly
dependent
characteristic
experimental
design.
Finally,
synthesis
highlighted
some
research
remediation
strategies,
protocol
standardize
ecotoxicological
studies.
Toxics,
Год журнала:
2023,
Номер
11(9), С. 782 - 782
Опубликована: Сен. 14, 2023
Microplastics
are
readily
available
in
the
natural
environment.
Due
to
pervasiveness
of
microplastic
pollution,
its
effects
on
living
organisms
necessitate
further
investigation.
The
size,
time
exposure,
and
amount
particles
appear
be
most
essential
factor
determining
their
toxicological
effects,
either
organismal
or
sub-organismal.
For
our
research
work,
we
preferred
work
a
terrestrial
model
organism
Drosophila
melanogaster
(Oregon
R+).
Therefore,
present
study,
characterized
2-100
µm
size
PET
confirmed
accumulation
Drosophila,
which
allowed
us
proceed
work.
At
larger
dosages,
locomotory
activities
such
as
climbing,
jumping,
crawling
indicated
decline
physiological
neuromuscular
functions.
Our
studies
also
determined
retarded
development
flies
decreased
survival
rate
female
after
exposure
highest
concentration
microplastics.
These
experimental
findings
provide
insight
into
possible
potential
neurotoxic
microplastics
detrimental
growth
flies.
TrAC Trends in Analytical Chemistry,
Год журнала:
2023,
Номер
161, С. 116993 - 116993
Опубликована: Фев. 24, 2023
Agricultural
systems
are
increasingly
impacted
by
micro-
and
nanoplastic
(MNP)
pollution
raising
concerns
for
food
safety
security.
To
understand
the
scale
of
problem
develop
mitigation
strategies,
there
is
a
need
to
characterise
effects
impacts
MNP.
Here,
we
discuss
main
MNP
entry
pathways
into
human
chain
their
effects/impact
on
feed
sources,
identifying
major
research
gaps
hindering
robust
risk
assessments
pollution.
We
identified
emerging
current
analytical
methods
facilitate
closing
those
gaps.
An
interdisciplinary
approach
combining
omics
strategies
with
novel
fast
reliable
measurement
plastic
additive
leaching
characterisation
across
multiple
dynamic
environments
can
accurately
quantify
risks.
Data
this
type
essential
support
policy
development
legislation
prevent
further
from
causing
security
problems
worldwide.
