TrAC Trends in Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
170, P. 117391 - 117391
Published: Nov. 4, 2023
Biodegradable
plastic
mulches
(BDMs)
can
offer
an
eco-sustainable
alternative
to
conventional
polyethene
(PE)
mulch
films
in
agriculture.
While
PE
must
be
removed
after
use,
BDMs
are
tilled
into
the
soil,
where
they
expected
biodegrade.
However,
their
long-term
impacts
on
soil
ecosystem
(functions,
processes,
and
microbial
communities)
remain
unclear.
This
review
critically
analyses
evidence
about
potential
of
as
a
possible
eco-friendly
traditional
mulches.
It
updates
available
literature
fate
agriculture
ecosystems,
pinpointing
crucial
aspects
that
deserve
further
investigation.
The
combined
findings
indicated
BDM
incorporation
could
stimulate
activity
may
ultimately
affect
organic
matter
dynamics.
using
should
linked
risks
incomplete
biodegradation
by
releasing
residual
bio-microplastics,
bio-nanoparticles
additives.
We
here
highlighted
gaps
knowledge
(i.e.
impact
ecology
risk
toxicity)
need
for
studies
natural
environmental
conditions
well
field
experiments
evaluate
actual
health
agroecosystem
sustainability.
Moreover,
there
still
needs
more
clarity
standards
covering
under
which
biodegradable
biodegrade
ensure
safe
end-of-life.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(33), P. 12137 - 12152
Published: Aug. 14, 2023
Microorganisms
colonizing
the
surfaces
of
microplastics
form
a
plastisphere
in
environment,
which
captures
miscellaneous
substances.
The
plastisphere,
owning
to
its
inherently
complex
nature,
may
serve
as
"Petri
dish"
for
development
and
dissemination
antibiotic
resistance
genes
(ARGs),
adding
layer
complexity
tackling
global
challenge
both
ARGs.
Increasing
studies
have
drawn
insights
into
extent
proliferation
ARGs
occurred
presence
micro/nanoplastics,
thereby
increasing
antimicrobial
(AMR).
However,
comprehensive
review
is
still
lacking
consideration
current
increasingly
scattered
research
focus
results.
This
focuses
on
spread
mediated
by
microplastics,
especially
challenges
perspectives
determining
contribution
AMR.
accumulates
biotic
abiotic
materials
persistent
surfaces,
which,
turn,
offers
preferred
environment
gene
exchange
within
across
boundary
plastisphere.
Microplastics
breaking
down
smaller
sizes,
such
nanoscale,
can
possibly
promote
horizontal
transfer
environmental
stressors
inducing
overgeneration
reactive
oxygen
species.
Additionally,
we
also
discussed
methods,
quantitatively
comparing
ARG
profiles
among
different
samples
this
emerging
field
that
multidimensional
parameters
are
great
necessity
systematically
determine
risk
Finally,
based
biological
sequencing
data,
offered
framework
assess
AMR
risks
micro/nanoplastics
biocolonizable
microparticles
leverage
AMR-associated
messages,
including
ARGs'
abundance,
mobility,
potential
acquisition
pathogens.
Processes,
Journal Year:
2024,
Volume and Issue:
12(4), P. 635 - 635
Published: March 22, 2024
The
aging
processes
of
microplastics
(MPs)
are
prevalent
in
natural
environments.
Understanding
the
mechanisms
MPs
is
crucial
for
assessing
their
environmental
behavior
and
potential
risks.
In
this
study,
we
selected
polylactic
acid
(PLA)
polyethylene
(PE)
as
representatives
biodegradable
conventional
plastics,
respectively,
to
examine
changes
physicochemical
properties
induced
by
water
UV
light
exposure.
Laboratory
resulted
significant
fragmentation,
characterized
cracks
pores
on
surfaces,
both
types
MPs,
with
PLA
exhibiting
more
severe
changes,
particularly
under
combined
Notably,
tended
become
progressively
smaller
after
aging,
whereas
PE
did
not
show
size
changes.
Chemical
analyses
aged
using
micro-Fourier-transform
infrared
spectroscopy
(FTIR)
X-ray
photoelectron
(XPS)
revealed
a
substantial
increase
carbonyl
index
(CI)
oxygen
content
PE,
suggesting
surface
oxidation
during
photo-oxidation.
Conversely,
displayed
CI
decrease,
along
an
increase,
indicating
breakdown
ester
linkages
formation
other
products.
Furthermore,
developed
optimized
pyrolysis–gas
chromatography–mass
spectrometry
(Py–GC–MS)
methods
identify
chemical
degradation
products
PLA,
considering
differing
thermal
stabilities.
We
observed
distinct
trend
regarding
peaks
chromatogram
identified
typical
crosslinking
PLA.
Additionally,
process,
exhibited
organic
carbon
content,
eluate
containing
submicron/nano-sized
particles.
This
study
provides
scientific
foundation
deeper
understanding
various
regards
effects
irradiation
