Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 8, 2025
The
escalating
environmental
concern
over
secondary
microplastics
(SMPs)
stems
from
their
physicochemical
evolution
primary
(PMPs),
yet
the
contribution
of
varying
transformations
to
ultimate
risks
remains
unknown.
In
this
study,
a
photomechanical
degradation
process
was
employed
convert
sunscreen-derived
(SDMPs)
into
SDMPs.
While
mechanical
caused
physical
fragmentation,
photodegradation
induced
both
and
chemical
alterations,
introducing
surface
oxidation,
bond
scission,
cross-linking
Employing
combination
alkaline
digestion
pyrolysis
GC-MS
techniques,
it
observed
that
fragmentation
photooxidation
led
heightened
intracellular
sequestration
MPs.
Although
bioaccumulated
SDMPs
could
be
indicated
by
enlarged
lysosomes
fragmented
mitochondria,
toxicity
at
cellular
level
primarily
driven
post-photodegradation.
A
nontargeted
analysis
employing
high-resolution
mass
spectrometry
identified
46
plastic-associated
compounds
in
leachate,
with
photodegradation-induced
playing
crucial
role
dissociation
hydrophobic
additives
oxidative
conversion
leached
compounds.
leachate
exacerbated
photodegradation,
mitochondrial
serving
as
subcellular
biomarker,
indicative
toxicity.
This
study
elucidates
pivotal
augmenting
cytotoxicity
SDMPs,
shedding
light
on
intricate
interplay
between
risks.
Microplastics,
Год журнала:
2023,
Номер
2(3), С. 278 - 303
Опубликована: Сен. 4, 2023
Microplastic
pollution
has
become
a
global
environmental
concern
with
detrimental
effects
on
ecosystems
and
human
health.
Effective
removal
of
microplastics
from
water
sources
is
crucial
to
mitigate
their
impacts.
Advanced
oxidative
processes
(AOPs)
have
emerged
as
promising
strategies
for
the
degradation
elimination
microplastics.
This
review
provides
comprehensive
overview
application
AOPs
in
water.
Various
AOPs,
such
photocatalysis,
ozonation,
Fenton-like
processes,
shown
significant
potential
microplastic
degradation.
These
generate
highly
reactive
species,
hydroxyl
radicals,
which
can
break
down
into
smaller
fragments
or
even
mineralize
them
harmless
byproducts.
The
efficiency
photocatalytic
oxidation
depends
several
factors,
including
choice
photocatalysts,
reaction
conditions,
physicochemical
properties
Furthermore,
this
discusses
challenges
associated
oxidation,
need
optimization
operating
parameters
formation
harmful
Overall,
offers
avenue
water,
contributing
preservation
aquatic
safeguarding
However,
further
research
needed
address
limitations
optimize
implementation
process
effective
sustainable
remediation.
ACS Catalysis,
Год журнала:
2024,
Номер
14(11), С. 8694 - 8719
Опубликована: Май 20, 2024
Microplastics
(MPs,
particle
size
<
5
mm)
have
become
increasingly
ubiquitous
on
Earth
due
to
the
cleavage
and
degradation
of
heavy
use
plastics.
MPs
recently
been
reported
be
detected
in
human
blood,
alveoli,
breast
milk,
embryos,
other
organs,
raising
concerns
about
their
environmental
risks.
Photocatalysis
has
identified
as
a
potential
means
for
conversion,
which
utilizes
solar
energy
stimulate
semiconductor
photocatalyst.
However,
study
photocatalytic
conversion
is
still
incubation
period.
This
review
overviews
current
state-of-the-art
technologies
conversion.
Then,
fundamental
principles,
challenges,
analytical
techniques,
evaluation
indexes
reforming
are
highlighted.
We
systematically
summarized
recent
advances
key
factors
influencing
performance.
Finally,
we
propose
some
perspectives
developing
efficient
systems
MPs.
will
provide
guideline
applying
technology
MPs,
significantly
contribute
this
emerging
research
field.
Environment International,
Год журнала:
2024,
Номер
186, С. 108638 - 108638
Опубликована: Апрель 1, 2024
Microplastics
(MPs)
are
pervasive
pollutants
in
the
natural
environment
and
contribute
to
increased
levels
of
illness
both
animals
humans.
However,
specific
impacts
MPs
on
skin
damage
alopecia
not
yet
well
understood.
In
this
study,
we
have
examined
effects
two
types
polystyrene
(pristine
aged)
hair
follicle
mice.
UV
irradiation
changed
chemical
physical
properties
aged
MPs,
including
functional
groups,
surface
roughness,
contact
angles.
vivo
vitro
experiments,
cell
injuries
related
oxidative
stress,
apoptosis,
tight
junctions
(TJs),
alopecia,
mitochondrial
dysfunction,
other
damages
were
observed.
Mechanistically,
can
induce
TJs
via
stress
pathway
inhibition
antioxidant-related
proteins,
lead
alopecia.
The
regulation
apoptosis
was
also
observed,
is
involved
ROS-mediated
signaling
pathway.
Importantly,
showed
exacerbated
toxicity,
which
may
be
due
their
elevated
irregularities
altered
compositions.
Collectively,
study
suggests
a
potential
therapeutic
approach
for
caused
by
pollution.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(22), С. 9875 - 9886
Опубликована: Май 9, 2024
Zinc
oxide
nanoparticles
(ZnO
NPs)
cause
biotoxicity
and
pose
a
potential
ecological
threat;
however,
their
effects
on
plant
metabolism
eco-corona
evolution
between
NPs
organisms
remain
unclear.
This
study
clarified
the
molecular
mechanisms
underlying
physiological
metabolic
responses
induced
by
three
different
ZnO
with
sizes
hydrophobicity
in
sprouts
(
Microplastics
(MPs)
originate
from
industrial
production
of
<1
mm
polymeric
particles
and
the
progressive
breakdown
larger
plastic
debris.
Their
environmental
behavior
is
governed
by
their
interfacial
properties,
which
dominate
due
to
small
size.
This
Perspective
highlights
complex
surface
chemistry
MPs
under
stressors
discusses
how
physical
attributes
like
shape
roughness
could
influence
fate.
We
further
identify
wastewater
treatment
plants
(WWTPs)
as
critical
hotspots
for
MP
accumulation,
where
are
inadvertently
transferred
sewage
sludge
reintroduced
into
environment.
emphasize
potential
colloid
science
not
only
improve
our
fundamental
understanding
but
also
advance
mitigation
strategies
in
such
WWTPs.
