Interaction of Microplastics with Emerging Organic Pollutants: A Study on Atrazine Adsorption and Phytotoxicity
Toxics,
Год журнала:
2025,
Номер
13(4), С. 257 - 257
Опубликована: Март 29, 2025
The
adsorption
of
atrazine
(ATZ)
onto
pristine
and
aged
polyethylene
microplastics
(MPs)
was
investigated
in
distilled
water
(DW)
hydroponic
nutrient-enriched
(EW)
to
evaluate
its
phytotoxic
effects
on
Lactuca
sativa
germination.
Aged
(AMPs)
exhibited
higher
ATZ
both
conditions:
0.646
mg/g
(14.49%)
DW
0.742
(15.87%)
EW,
compared
0.405
(9.08%)
0.504
(10.78%)
for
(PMPs),
respectively.
This
increase
attributed
photodegradation-induced
surface
modifications
MP,
including
increased
roughness
the
formation
oxygenated
functional
groups.
phytotoxicity
assays
showed
that
adsorbed
AMPs
inhibited
seed
germination
more
severely,
with
a
maximum
inhibition
34%
at
2
mg/L,
evidencing
microplastic
aging
enhances
increases
toxicity
risks
aquatic
environments,
particularly
under
eutrophic
conditions.
combined
presence
MP
resulted
greater
toxicity,
synergistic
effect,
as
observed
dry
wet
mass
inhibition.
These
findings
indicate
pollutant
interactions
amplify
negative
impacts
plant
development.
Furthermore,
primarily
affects
root
growth
through
direct
physical
contact
rather
than
via
desorption
into
water.
Язык: Английский
Effects of biodegradable microplastics on soil microbial communities and activities: Insight from an ecological mesocosm experiment
The Science of The Total Environment,
Год журнала:
2025,
Номер
975, С. 179288 - 179288
Опубликована: Апрель 2, 2025
Microplastics
(MP)
are
being
released
into
the
environment
at
an
increasing
rate,
causing
extensive
pollution
in
soils
and
affecting
biota
processes.
Although
use
of
biodegradable
plastic
has
increased,
its
effects
on
soil
microbial
community
not
yet
well
understood.
A
controlled
mesocosm
experiment
was
conducted
to
investigate
response
communities
amounts
starch-polybutylene
adipate
terephthalate
MPs
(PBAT-BD-MPs)
added
soil.
The
included
microbes,
earthworms,
springtails,
plants.
PBAT-BD-MPs
were
column
doses
ranging
from
0
0.8
%
w/w
dry
mass,
columns
incubated
for
11
weeks
under
climatic
conditions.
Bacterial
fungal
amplicon
sequencing
used
dose-dependent
communities'
alpha
beta
diversity.
diversity
indices
bacterial
increased
with
PBAT-BD-MP
concentration.
richness
highest
MP
concentration
(0.8
%).
similar
trend
observed
community,
a
significant
increase
as
increased.
both
significantly
treatments
compared
control
treatment.
At
%),
abundance
phylum
Planctomycetes
showed
increase,
while
Firmicutes
decrease.
phyla
Ascomycota
Mortierellomycota
also
group.
Alongside
changes
we
rise
respiration
Our
three-month
study
demonstrates
that
introduction
microplastics
natural
standard
realistic
concentrations
(0-0.025-0.05-0.2-0.8
%)
particle
size
distribution
alters
community.
Язык: Английский