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:
2022,
Номер
56(17), С. 12267 - 12277
Опубликована: Авг. 11, 2022
Microplastics
in
the
environment
can
be
colonized
by
microbes
capable
of
forming
biofilms,
which
may
act
as
reactive
coatings
to
affect
bioaccessibility
pollutants
organisms.
This
study
investigated
dynamic
evolution
biofilm
colonization
on
microplastics
and
its
impacts
mechanisms
microplastic-associated
sulfamethazine
(SMT)
via
microcosm
incubation
surface
water
sediment.
After
60
days
incubation,
microbial
communities
formed
were
distinct
more
diverse
than
those
untethered
surroundings,
photoaging
treatment
decreased
affinity
biofilms
due
hydrophobicity.
Biofilm
formation
further
enhanced
desorption
microplastic-sorbed
SMT
In
vitro
experiments
indicated
that
critical
effects
mainly
related
stronger
interaction
gastrointestinal
components
(i.e.,
pepsin,
bovine
serum
albumin
(BSA),
NaT)
with
(e.g.,
extracellular
polymer
substances)
pure
microplastics,
competed
for
binding
sites
significantly.
Photoaging
enhancing
their
lower
accumulation
aged
microplastics.
is
first
attempt
reveal
role
associated
antibiotics
provide
insights
into
combined
risk
environment.
Frontiers of Environmental Science & Engineering,
Год журнала:
2022,
Номер
16(10)
Опубликована: Апрель 26, 2022
Abstract
Microplastics
(MPs)
are
recognized
as
vectors
for
the
transport
of
organic
contaminants
in
aquatic
environments
addition
to
their
own
adverse
effects
on
organisms.
Per-
and
polyfluoroalkyl
substances
(PFASs)
widely
present
due
widespread
applications,
thus
coexist
with
MPs.
Therefore,
we
focus
interaction
MPs
PFASs
related
combined
toxicity
this
work.
The
adsorption
is
critically
reviewed,
new
mechanisms
such
halogen
bonding,
π-π
interaction,
cation-π
interactions,
micelle
formation
proposed.
Moreover,
effect
transformation
discussed.
Based
four
typical
organisms
(shellfish,
Daphnia,
algae,
fish),
and/or
at
organismal
or
molecular
levels
also
evaluated
summarized.
Finally,
challenges
research
perspectives
proposed,
roles
shapes
aging
process
PFAS
biogeochemical
processes
toxicity,
especially
substitutes,
recommended
further
investigation.
This
review
provides
a
better
understanding
interactions
toxic
coexisting
environments.
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
