As
emerging
contaminants,
microplastic
contamination
of
the
coastal
ecosystems
is
one
world’s
most
pressing
environmental
concerns.
Coastal
sediments
have
been
polluted
to
varying
degrees
by
microplastics,
and
ubiquitous
presence
microplastics
in
poses
a
threat
marine
organisms.
However,
there
currently
no
ecological
risk
assessment
towards
aquatic
biota
sediments.
This
study
for
first
time
established
new
procedure
evaluate
toxicity
on
based
probabilistic
(PRA)
concept.
The
choice
Zhelin
Bay
as
case
site
was
its
severe
pollution
status.
average
content
21.71
items/10
g
dry
weight,
these
consisted
52
different
species.
Microplastics
presented
five
forms,
with
film
form
being
main
composition,
particle
sizes
ranging
from
100-500
μm.
Correlation
analysis
(CA)
reveals
that
significant
negative
correlations
were
found
between
abundance,
Al2O3
SiO2.
PRA
concept
shows
surface
had
low
probability
(3.48%)
toxic
effects
biota.
Water Research,
Год журнала:
2024,
Номер
273, С. 122947 - 122947
Опубликована: Дек. 18, 2024
In
recent
years,
it
has
become
clear
that
plastic
pollution
poses
a
significant
threat
to
aquatic
environments
and
human
health.
Rivers
act
as
entry
points
for
land-based
waste,
while
certain
fraction
of
entrained
plastics
is
carried
into
marine
environments.
As
such,
the
accurate
modelling
transport
processes
in
riverine
systems
plays
crucial
role
developing
adequate
remediation
strategies.
this
paper,
we
review
two
main
multiphase
flow
numerical
approaches
used
modelling,
comprising
Lagrangian
Transport
Models
(LTMs)
Eulerian
(ETMs).
Although
LTMs
ETMs
can
be
regarded
complementary
equivalent
approaches,
focus
on
trajectories
individual
particles,
whereas
represent
behaviour
particles
terms
their
mass
or
volume
concentrations.
Similar
results
are
expected,
our
shows
models
yet
improved,
specifically
with
respect
formulation
implementation
boundary
conditions,
interactions
channel
bed,
river
bank,
free
surface,
well
biota.
We
anticipate
an
these
conditions
will
allow
better
representation
different
modes,
including
bed
load,
suspended
surface
load.
Finally,
provide
suggestions
future
research
directions,
novel
threshold
detachment
plastics,
hope
inspire
community,
thereby
triggering
new
developments
rapidly
advancing
field
modelling.
Microplastics,
Год журнала:
2023,
Номер
2(4), С. 422 - 436
Опубликована: Дек. 16, 2023
Microplastics
(MP)
have
been
evidenced
in
marine
and
coastal
areas
worldwide,
including
the
Gulf
of
California
Mexico,
where
Vaquita
Marina
refuge
area
is
located,
which
turn
borders
protected
natural
Alto
Golfo
de
y
Delta
del
Rio
Colorado.
This
research
aimed
to
determine
concentrations
microplastics
protection
zone,
analyzing
samples
ten
transects
surface
water
sand
five
beaches
on
coast
surrounding
polygon.
The
total
MP
were
from
0.000
0.020
MP/m3
their
most
recurrent
characteristics
fragments
(69.0%),
chemical
composition
polyethylene
(60.0%),
blue
color
(39.0%)
a
size
2.1–3.0
mm
(31.0%).
While
for
beaches,
these
corresponded
averages
ranging
28.2
±
36.4;
17.6
200.7
77.9;
193.7
MP/m2,
common
filaments
(33.2%),
PE
(32.3%),
white
(28.0%),
4.1–5.0
(32.0%).
results
suggest
that
part
could
come
urban
such
as
activities
fishing.
It
recommended
study
all
polygon
more
it
different
seasons
better
understand
status
pollution.
As
emerging
contaminants,
microplastic
contamination
of
the
coastal
ecosystems
is
one
world’s
most
pressing
environmental
concerns.
Coastal
sediments
have
been
polluted
to
varying
degrees
by
microplastics,
and
ubiquitous
presence
microplastics
in
poses
a
threat
marine
organisms.
However,
there
currently
no
ecological
risk
assessment
towards
aquatic
biota
sediments.
This
study
for
first
time
established
new
procedure
evaluate
toxicity
on
based
probabilistic
(PRA)
concept.
The
choice
Zhelin
Bay
as
case
site
was
its
severe
pollution
status.
average
content
21.71
items/10
g
dry
weight,
these
consisted
52
different
species.
Microplastics
presented
five
forms,
with
film
form
being
main
composition,
particle
sizes
ranging
from
100-500
μm.
Correlation
analysis
(CA)
reveals
that
significant
negative
correlations
were
found
between
abundance,
Al2O3
SiO2.
PRA
concept
shows
surface
had
low
probability
(3.48%)
toxic
effects
biota.
