Journal of Hazardous Materials,
Journal Year:
2023,
Volume and Issue:
465, P. 133395 - 133395
Published: Dec. 28, 2023
Plastics
fragment
and
threaten
soil
ecosystems.
Degradation
of
structure
is
one
the
risks.
Despite
this,
data
on
impacts
different
sized
microplastics
(MPs)
aggregates
lacking.
This
study
systematically
investigated
effects
pristine
polyethylene
powders
sizes
(<35,
<125,
<500
μm)
concentrations
(0,
0.1,
1.0,
10
wt%)
aggregate
formation
their
properties
for
two
contrasting
soils
(woodland
soil,
WS;
agricultural
AS).
75
day
wet-dry
cycles
produced
newly-formed
in
all
treatments.
MP
size
concentration
impacted
incorporation
MPs
this
varied
with
size;
distribution
also
concentration.
Aggregates
containing
wt%
<35
μm
had
significantly
lower
MWDs
(mean
weight
diameters)
than
controls.
The
wettability
(>4
mm)
reduced
increasing
exposure
decreasing
size.
decreased
water
stability
(1-2
WS
but
increased
it
AS.
particle
density
concentration,
whereas
no
effect.
As
breakdown,
become
smaller
over
time,
potential
risk
to
aggregated
increases.
Current
concerns
regarding
tend
focus
toxicity
largely
ignore
that
can
inhibit
functioning.
Our
suggests
serious
degradation
due
contamination
occur
if
are
small
relative
present
at
high
concentrations;
coarser
unlikely
change
even
extreme
loadings.
degrade
overtime,
physical
impact
likely
increase
thus
will
increase.
Materials,
Journal Year:
2023,
Volume and Issue:
16(2), P. 674 - 674
Published: Jan. 10, 2023
Plastics
are
commonly
used
for
packaging
in
the
food
industry.
The
most
popular
thermoplastic
materials
that
have
found
such
applications
polyethylene
(PE),
polypropylene
(PP),
poly(ethylene
terephthalate)
(PET),
and
polystyrene
(PS).
Unfortunately,
plastic
is
disposable.
As
a
consequence,
significant
amounts
of
waste
generated,
entering
environment,
undergoing
degradation
processes.
They
can
occur
under
influence
mechanical
forces,
temperature,
light,
chemical,
biological
factors.
These
factors
present
synergistic
or
antagonistic
effects.
result
their
action,
microplastics
formed,
which
undergo
further
fragmentation
decomposition
into
small-molecule
compounds.
During
process,
various
additives
at
plastics'
processing
stage
also
be
released.
Both
negatively
affect
human
animal
health.
Determination
negative
consequences
on
environment
health
not
possible
without
knowing
course
processes
products.
In
this
article,
we
sources
microplastics,
causes
places
formation,
transport
particles,
plastics
often
production
storage,
affecting
said
its
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(13), P. 5821 - 5831
Published: Feb. 28, 2024
Microplastics
(MPs)
contamination
presents
a
significant
global
environmental
challenge,
with
its
potential
to
influence
soil
carbon
(C)
dynamics
being
crucial
aspect
for
understanding
C
changes
and
cycling.
This
meta-analysis
synthesizes
data
from
110
peer-reviewed
publications
elucidate
the
directional,
magnitude,
driving
effects
of
MPs
exposure
on
globally.
We
evaluated
impacts
characteristics
(including
type,
biodegradability,
size,
concentration),
properties
(initial
pH
organic
[SOC]),
experimental
conditions
(such
as
duration
plant
presence)
various
components.
Key
findings
included
promotion
SOC,
dissolved
C,
microbial
biomass
root
following
addition
soils,
while
net
photosynthetic
rate
was
reduced.
No
were
observed
respiration
shoot
biomass.
The
study
highlights
that
concentration,
along
other
attributes,
critically
influences
responses.
Our
results
demonstrate
both
nature
environment
interact
shape
cycling,
providing
comprehensive
insights
guiding
strategies
mitigating
impact
MPs.
