International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(10), С. 5060 - 5060
Опубликована: Май 7, 2024
The
present
study
employs
X-ray
photoelectron
spectroscopy
(XPS)
to
analyze
plastic
samples
subjected
degradation
processes
with
the
aim
gain
insight
on
relevant
chemical
and
disclose
fragmentation
mechanisms.
Two
model
plastics,
namely
polystyrene
(PS)
polyethylene
(PE),
are
selected
analyzed
before
after
artificial
UV
radiation-triggered
weathering,
under
simulated
environmental
hydrodynamic
conditions,
in
fresh
marine
water
for
different
time
intervals.
object
of
is
identify
quantify
groups
possibly
evidencing
occurrence
hydrolysis
oxidation
reactions,
which
basis
environment,
determining
macroplastic
fragmentation.
Artificially
weathered
also
by
Raman
FT-IR
spectroscopy.
Changes
surface
chemistry
weathering
revealed
XPS,
involving
increase
moieties
(hydroxyl,
carbonyl,
carboxyl
functionalities)
can
be
correlated
responsible
On
other
hand,
absence
significant
modifications
upon
plastics
evidenced
confirms
importance
investigating
surface,
represents
very
first
part
materials
exposed
agents,
thus
revealing
power
XPS
studies
this
purpose.
data
experimentally
particles
compared
ones
obtained
microplastics
collected
from
real
environment
occurring
processes.
The Science of The Total Environment,
Год журнала:
2024,
Номер
946, С. 174259 - 174259
Опубликована: Июнь 25, 2024
Investigating
microplastics
(MPs)
in
groundwater
suffers
from
problems
already
faced
by
surface
water
research,
such
as
the
absence
of
common
protocols
for
sampling
and
analysis.
While
use
plastic
instruments
during
collection,
processing,
analysis
samples
is
usually
avoided
order
to
minimize
unintentional
contamination,
research
encompassing
MPs
faces
unique
challenges.
Groundwater
typically
relies
on
pre-existing
monitoring
wells
(MWs)
(WWs)
that
are
often
constructed
with
polyvinyl
chloride
(PVC)
casings
or
pipes
due
their
favorable
price-performance
ratio.
Despite
convenience,
however,
suitability
PVC
MP
questionable.
Unfortunately,
specifics
these
not
detailed
published
studies.
Current
literature
does
indicate
significant
pollution
risks
casings,
suggesting
might
still
be
viable
Our
preliminary
existing
indicates
if
exceeds
6
%
total
concentration,
it
likely
made
a
source
pollution.
Above
this
threshold,
additional
investigations
MWs
WWs
suggested.
Environmental Science Nano,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Our
approach
lowers
the
size
of
nanosized
plastics
detectable
via
micro-Raman
spectroscopy,
exploiting
resonance
Raman
signal
from
blue-pigmented,
highly
abundant
microplastics.
Journal of Environmental Quality,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 19, 2025
Microplastics
(MPs)
are
emerging
pollutants
in
aquatic
systems,
but
their
presence
groundwater,
particularly
thermal
waters,
is
understudied.
This
study
investigates
the
prevalence
and
characteristics
of
MPs
waters
Kütahya,
Turkey,
marking
first
such
exploration
country
globally
groundwater
systems.
Twenty-one
samples
(3
L
each)
were
collected
across
nine
regions
filtered
using
GF/C
filters
(0.45-µm
pore
size).
Microscopic
examination
μ-Raman
spectroscopy
revealed
an
average
MP
concentration
0.85
±
0.71
MPs/L
(850
MPs/m3),
with
highest
at
ST-8
(4.88
2.98
MPs/L).
Fibers
(50%),
fragments
(39.8%),
films
(10.2%)
identified,
polyethylene
(22.2%)
being
most
common
polymer
type.
Variability
abundance
stations
suggests
multiple
contamination
sources,
including
agricultural
runoff,
anthropogenic
activities,
material
used
water
transport
infrastructure.
The
findings
indicate
low-level
which
could
influence
both
ecological
health
human
activities
relying
on
these
as
tourism
greenhouse
irrigation.
pioneering
highlights
necessity
for
integrated
waste
management
policies
to
mitigate
pollution
underscores
role
understanding
dynamics
Environmental Quality Management,
Год журнала:
2025,
Номер
34(4)
Опубликована: Май 1, 2025
ABSTRACT
One
area
of
growing
concern
was
the
presence
microplastics
(MPs)
in
agricultural
irrigation
systems,
where
they
entered
and
affected
soil
quality
plant
health.
This
study
evaluated
impact
MPs
on
growth
through
a
comprehensive
analysis
existing
literature,
focusing
studies
that
examined
water,
including
their
identification,
occurrence,
environmental
impacts
systems.
systems
are
transported
by
deposited
soil,
trapped
sediments,
or
infiltrated
deeper
layers,
interacting
with
chemicals
increasing
toxicity
risks.
Additionally,
water
disrupted
physical
properties
reducing
porosity
aggregate
stability,
while
altering
nutrient
cycling
processes,
carbon,
nitrogen,
phosphorus
dynamics.
Moreover,
negatively
microbial
communities
fauna,
further
compromising
fertility.
These
disturbances
significantly
hinder
productivity
health,
suggesting
urgent
need
for
mitigation
strategies.
The
uptake
translocation
crops
impaired
growth,
reduced
photosynthetic
efficiency,
induced
oxidative
stress.
highlights
potential
long‐term
risks
contamination,
emphasizing
threat
to
sustainability.
Consequently,
posed
significant
health
productivity,
underscoring
importance
addressing
this
emerging
issue
ensure
sustainable
practices.
