Cambridge Prisms Plastics,
Год журнала:
2024,
Номер
2
Опубликована: Янв. 1, 2024
Abstract
Environmental
plastic
pollution
comprises
partially
degraded
particles
representing
a
continuum
of
sizes,
shapes,
polymer
types
and
chemical
compositions.
Owing
to
their
potential
for
biological
uptake,
small
microplastic
(sMP;
<100
μm)
nanoplastics
(NPs)
are
considered
be
risk
organisms.
Understanding
how
sMPs
NPs
behave
in
the
environment,
environmental
matrices
affect
detection,
is
fundamental
quantifying
exposures,
assessing
hazards
understanding
these
risks.
For
this
purpose,
high-quality,
well-characterised
environmentally
relevant
test
reference
materials
crucial.
The
current
lack
sMP
NP
has
resulted
many
studies
applying
commercially
available
spherical,
homogenous
monodisperse
particles,
typically
produced
specific
purposes
without
relevance.
There
need
test/reference
fate
effects
assessments
analytical
protocol
validation
that
more
accurately
represent
present
environment.
To
date,
feasible
methods
producing
sufficient
quantities
remain
lacking.
review
provides
an
overview
comparison
methods,
highlighting
those
show
most
promise
with
further
development
optimisation.
Environmental Science & Technology Letters,
Год журнала:
2024,
Номер
11(3), С. 273 - 279
Опубликована: Фев. 28, 2024
Tap
water
nano/microplastics
(NMPs)
escaping
from
centralized
treatment
systems
are
of
increasing
global
concern,
because
they
pose
potential
health
risk
to
humans
via
consumption.
Drinking
boiled
water,
an
ancient
tradition
in
some
Asian
countries,
is
supposedly
beneficial
for
human
health,
as
boiling
can
remove
chemicals
and
most
biological
substances.
However,
it
remains
unclear
whether
effective
removing
NMPs
tap
water.
Herein
we
present
evidence
that
polystyrene,
polyethylene,
polypropylene
coprecipitate
with
calcium
carbonate
(CaCO3)
incrustants
upon
boiling.
Boiling
hard
(>120
mg
L–1
CaCO3)
at
least
80%
size
between
0.1
150
μm.
Elevated
temperatures
promote
CaCO3
nucleation
on
NMPs,
resulting
the
encapsulation
aggregation
within
incrustants.
This
simple
boiling-water
strategy
"decontaminate"
household
has
harmlessly
alleviating
intake
through
NanoImpact,
Год журнала:
2023,
Номер
31, С. 100474 - 100474
Опубликована: Июль 1, 2023
Micro
and
nanoplastics
(MPs
NPs,
respectively)
in
agricultural
soil
ecosystems
represent
a
pervasive
global
environmental
concern,
posing
risks
to
biota,
hence
health
food
security.
This
review
provides
comprehensive
current
summary
of
the
literature
on
sources
properties
MNPs
ecosystems,
methodology
for
isolation
characterization
recovered
from
soil,
MNP
surrogate
materials
that
mimic
size
soil-borne
MNPs,
transport
through
matrix.
Furthermore,
this
elucidates
impacts
crops
microorganisms
fauna.
A
significant
source
MPs
is
plasticulture,
involving
use
mulch
films
other
plastic-based
implements
provide
several
agronomic
benefits
specialty
crop
production,
while
include
irrigation
water
fertilizer.
Long-term
studies
are
needed
address
knowledge
gaps
formation,
surface
subsurface
transport,
including
derived
biodegradable
films,
which,
although
ultimately
undergoing
complete
mineralization,
will
reside
months.
Because
complexity
variability
difficulty
recovering
deeper
understanding
fundamental
relationships
between
MPs,
biota
microbiota,
ecotoxicological
effects
earthworms,
soil-dwelling
invertebrates,
beneficial
microorganisms,
geochemical
attributes.
In
addition,
geometry,
distribution,
chemical
properties,
concentration
contained
soils
required
develop
reference
can
be
used
across
laboratories
conducting
laboratory
studies.
Toxics,
Год журнала:
2024,
Номер
12(6), С. 420 - 420
Опубликована: Июнь 7, 2024
Transgenerational
nanoplastic
toxicity
could
be
detected
in
Caenorhabditis
elegans
after
exposure
at
the
parental
generation
(P0-G);
however,
underlying
mechanisms
remain
largely
unclear.
We
aimed
to
examine
role
of
germline
nuclear
hormone
receptors
(NHRs)
controlling
transgenerational
polystyrene
nanoparticles
(PS-NPs)
based
on
gene
expression
screening
and
functional
analysis.
Among
NHR
genes,
daf-12,
nhr-14,
nhr-47
expressions
were
increased
nhr-12
was
decreased
by
PS-NPs
(1
10
μg/L).
alterations
these
four
genes
also
induced
RNAi
caused
resistance,
whereas
conferred
susceptibility
PS-NP
toxicity.
After
exposure,
ins-3,
daf-28,
ins-39
encoding
insulin
ligands,
efn-3
Ephrin
ligand,
lin-44
Wnt
as
well
their
receptor
(daf-2,
vab-1,
and/or
mig-1),
dysregulated
nhr-47,
nhr-12.
Therefore,
alteration
certain
NHRs
mediate
induction
affecting
secreted
ligands
offspring
exposed
organisms.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Photochemical
weathering
and
eco-corona
formation
through
natural
organic
matter
(NOM)
adsorption
play
vital
roles
in
the
aggregation
tendencies
of
nanoplastics
(NPs)
aquatic
environments.
However,
it
remains
unclear
how
photochemical
alters
patterns
NOM
conformation
eco-corona,
subsequently
affecting
NPs.
This
study
examined
effect
Suwannee
River
on
kinetics
pristine
photoaged
polystyrene
(PS)
NPs
monovalent
electrolyte
solutions.
The
results
showed
that
influenced
which,
turn,
determined
NP
stability
presence
NOM.
Hydrophobic
components
predominantly
bound
to
hydrophobic
π–π
interactions,
extended
hydrophilic
segments
water
hindered
via
steric
repulsion.
Conversely,
hydrogen
bonding
facilitated
binding
these
multiple
NPs,
thereby
destabilizing
them
polymer
bridging.
Additionally,
stabilization
destabilization
capacities
increased
with
its
concentration
molecular
weight.
These
findings
shed
light
role
weathered
offering
new
perspectives
environmental
colloidal
chemistry
fate
complex
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.
