Microplastics
(MPs)
have
been
widely
documented
in
marine
biota,
especially
bivalve
species.
The
uneaven
occurrence
of
MP
reveals
hotspots,
whose
identification
is
relevant
for
guiding
actions,
assessing
effects,
and
monitoring
efforts.
Thus,
he
objective
the
study
was
to
identify
oyster
contamination
hotspots
along
Paranaguá
Estuarine
Complex
-
Brazil.
We
recorded
widespread
variable
oysters
at
regional
local
scales.
frequency
(FO%)
94.31%,
with
a
trend
toward
lower
values
more
remote
and/or
environmental
protection
areas.
average
8.16
±
6.39
MP.ind-1,
1.06
1.28
MP.g-1ww
(wet
weight)
7.54
6.55
MP.g-1dw
(dry
weight
),
influenced
by
location
evaluated.
recommend
that
future
studies
present
information
as
biometric
data
organisms,
which
will
assist
discussion
comparison
concentrations
biota
different
special
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 3, 2025
Currently,
there
is
a
lack
of
comprehensive
understanding
the
behavior
polycyclic
aromatic
hydrocarbons
(PAHs)
in
complex
multimedia
urban
environmental
systems.
Taking
Urumqi
City
as
case
study,
we
developed
an
integrated
model
to
simulate
inter-media
transport
processes
PAHs
across
air,
water,
soil,
sediment,
vegetation,
and
impervious
surfaces.
The
predictive
results
this
were
good
agreement
with
actual
monitoring
data
from
2021,
confirming
its
accuracy.
Notably,
simulated
for
2021
indicate
that
total
amount
soil
reached
1.06
×
106
kg,
accounting
97.44%
City,
highlighting
primary
sink
PAHs.
Further
analysis
fluxes
revealed
atmospheric
transfer
pathways
vegetation
are
main
mechanisms
driving
distribution
environments.
Additionally,
sensitivity
identified
temperature,
vegetation-related
parameters
factors
influencing
Based
on
concentration,
risk
assessment
showed
had
higher
carcinogenesis
human
body.
This
study
deepens
our
environments
provides
insights
into
how
activities
affect
fate
transformation
these
contaminants
