Environmental Research,
Год журнала:
2022,
Номер
216, С. 114834 - 114834
Опубликована: Ноя. 15, 2022
Microplastics
(MPs)
and
perfluoroalkyl
substances
(PFASs)
are
two
types
of
pollutants
coexisting
in
the
environment.
Their
co-exposure
is
a
source
increasing
concern.
MPs
present
natural
environment
suppose
an
ideal
surface
for
sorption
hazardous
contaminants.
This
study
investigates
adsorption
behaviour
six
PFASs
on
polyamide
(PA)
MPs.
Adsorption
experiments
under
various
internal
(PA
dosage,
PA
particle
size)
environmental
(pH,
ionic
strength,
dissolved
organic
matter)
factors
were
carried
out.
Isotherm
results
(from
0.1
to
25
mg/L
PFASs)
showed
that
maximum
capacity
selected
was
as
follows:
perfluorooctanesulfonic
acid
(PFOS,
0.873
mg/g)
>
perfluorooctanoic
(0.235
perfluoroheptanoic
(0.231
perfluorohexanoic
(0.201
perfluoropentanoic
(0.192
perfluorobutanoic
(0.188
(pH
5.88,
0%
salinity
matter).
The
PFOS
has
more
tendency
be
sorbed
onto
than
perfluorocarboxilic
acids.
MP
characterization
by
scanning
electron
microscopy,
X
ray
diffraction
Fourier
transform
infrared
spectroscopy
changes
after
assays.
Pore
filling,
hydrophobic
interactions
hydrogen
bonds
governed
process.
crucially
affected
size
19.6%
99.9%
3
mm
50
μm
size,
respectively).
process
not
significantly
influenced
while
matter
exerted
negative
effect
(decrease
from
100%
26%
presence
humic
acid).
Finally,
rates
quantified
real
water
matrices
(influent
effluent
wastewater,
tap
samples).
revealed
between
evidenced
role
vector
transport
aquatic
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
The
plastisphere,
defined
as
the
ecological
niche
for
microbial
colonization
of
plastic
debris,
has
been
recognized
a
hotspot
pathogenic
and
antibiotic-resistant
bacteria.
However,
interactions
between
bacteria
phages
facilitated
by
well
their
impact
on
risks
to
public
health,
remain
unclear.
Here,
we
analyzed
metagenomic
data
from
180
plastisphere
environmental
samples,
stemming
four
different
habitats
two
types
(biodegradable
nonbiodegradable
plastics)
obtained
611
nonredundant
metagenome-assembled
genomes
(MAGs)
4061
phage
contigs.
community
exhibited
decreased
diversity
virulent
proportion
compared
those
found
in
environments.
Indexes
phage-host
interaction
networks
indicated
significant
associations
with
(ARB),
particularly
biodegradable
plastics.
Known
phage-encoded
auxiliary
metabolic
genes
(AMGs)
were
involved
nutrient
metabolism,
antibiotic
production,
quorum
sensing,
biofilm
formation
which
contributed
enhanced
competition
survival
pathogens
ARB
hosts.
Phages
also
carried
transcriptionally
active
virulence
factor
(VFGs)
resistance
(ARGs),
could
mediate
horizontal
transfer
communities.
Overall,
these
discoveries
suggest
that
form
symbiotic
relationships
hosts,
encoding
AMGs
mediating
gene
(HGT)
increase
source
plastisphere.
Molecules,
Год журнала:
2022,
Номер
27(5), С. 1744 - 1744
Опубликована: Март 7, 2022
Microplastics,
due
to
their
surface
properties,
porosity
and
electrostatic
interactions
have
a
high
affinity
for
cations
sorption
from
the
aqueous
phase.
As
soil
is
complex
matrix,
between
microplastics,
constituents
heavy
metals
(HM)
may
modify
microenvironment
metal
mobilization/immobilization
processes.
In
order
better
understand
problem,
three
commonly
found
forms
of
microplastics
in
(fibers,
fragments
microbeads)
were
mixed
with
Cu2+-
or
Pb2+-contaminated
incubated
at
22
°C
180
days.
samples
pH
content
water
acid
exchangeable
species
analyzed.
The
results
this
study
showed
that
presence
HM-contaminated
affected
speciation,
increasing
amount
easily
potentially
bioavailable
Cu2+
Pb2+
tested
soil.
Soil
also
increased,
confirming
microplastic
particles
affect
properties
relevant
sorption/desorption
process
cations.
Overall,
smallest
(≤1
mm),
such
as
fibers
glitter
microbeads,
had
greater
impact
on
change
desorption
conditions
than
larger
particles.
findings
our
show
form,
shape
size
should
be
considered
important
factors
influence
mobility
ACS Nano,
Год журнала:
2022,
Номер
16(10), С. 17157 - 17167
Опубликована: Окт. 6, 2022
Nanoplastics
are
ubiquitous
in
ecosystems
and
impact
planetary
health.
However,
our
current
understanding
on
the
impacts
of
nanoplastics
upon
terrestrial
plants
is
fragmented.
The
lack
systematic
approaches
to
evaluating
these
limits
ability
generalize
from
existing
studies
perpetuates
regulatory
barriers.
Here,
we
undertook
a
meta-analysis
quantify
overall
strength
nanoplastic
developed
machine
learning
approach
predict
adverse
identify
contributing
features.
We
show
that
primarily
associated
with
toxicity
metrics,
followed
by
plant
species,
mass
concentration
size,
exposure
time
medium.
These
results
highlight
threats
depend
diversity
reactions
across
molecular
ecosystem
scales.
rooted
both
spatial
functional
complexities
and,
as
such,
specific
plastic
characteristics
environmental
conditions.
findings
demonstrate
utility
interrogating
data
literature
update
risk
assessments
evidence-based
policy
actions.
Nanomaterials,
Год журнала:
2022,
Номер
12(13), С. 2256 - 2256
Опубликована: Июнь 30, 2022
The
studies
on
microplastics
are
significant
in
the
world.
According
to
literature,
have
greatly
specific
surface
areas,
indicating
high
adsorption
capacities
for
highly
toxic
pollutants
aquatic
and
soil
environments,
these
could
be
used
as
adsorbents.
influencing
factors
of
microplastic
adsorption,
classification
microplastics,
mechanisms
using
adsorbing
organic,
inorganic,
mixed
summarized
paper.
Furthermore,
influence
pH,
temperature,
functional
groups,
aging,
other
related
performances
plastics
discussed
detail.
We
found
that
greater
advantages
efficient
performance
cost-effectiveness.
In
this
paper,
adsorptions
by
their
is
proposed,
which
provides
guidance
future
research
field.
