Water Emerging Contaminants & Nanoplastics,
Год журнала:
2024,
Номер
3(4)
Опубликована: Дек. 30, 2024
Microplastic
(MP;
plastic
particles
<
5
mm)
pollution
is
pervasive
in
the
marine
environment,
including
remote
polar
environments.
This
study
provides
first
pan-Antarctic
survey
of
MP
Southern
Ocean
sea
ice
by
analyzing
cores
from
several
diverse
Antarctic
regions.
Abundance,
chemical
composition,
and
particle
size
data
were
obtained
19
archived
core
samples.
The
melted,
filtered,
chemically
analyzed
using
Fourier-transform
infrared
spectroscopy
4,090
identified.
Nineteen
polymer
types
found
across
all
samples,
with
an
average
concentration
44.8
(±
50.9)
particles·L-1.
Abundance
composition
varied
type
geographical
location.
Pack
exhibited
significantly
higher
concentrations
than
landfast
ice,
suggesting
open
ocean
sources
pollution.
Winter
had
more
MPs
spring
summer-drilled
cores,
formation
processes
play
a
role
incorporation.
Smaller
dominated
Polyethylene
(PE)
polypropylene
(PP)
most
common
polymers,
mirroring
those
identified
habitats.
Higher
developing
during
autumn
winter,
contrasting
lower
levels
observed
summer,
suggest
turbulent
conditions
faster
growth
rates
are
likely
responsible
for
increased
incorporation
particles.
contamination
stems
both
local
distant
sources.
However,
circulation
deep
waters
long-range
transport
contribute
to
accumulation
regional
gyres,
coastlines,
their
eventual
into
ice.
Additionally,
seasonal
variations
influence
compositions,
reflecting
underlying
waters.
The Science of The Total Environment,
Год журнала:
2024,
Номер
946, С. 174320 - 174320
Опубликована: Июнь 26, 2024
Antarctica
has
traditionally
been
viewed
as
a
relatively
isolated
ecosystem.
Although
still
considered
pristine,
it
is
increasingly
also
being
affected
by
microplastic
pollution.
Reported
high
sea
floor
concentrations
raise
concern
that
these
ecosystems
might
act
major
sink
for
This
significant
species
in
those
remote
are
likely
more
sensitive
to
rapid
environmental
change
due
level
of
specialization,
and
lower
tolerance
levels.
Microplastic
ingestion
fish
barely
assessed
latitude
environments.
Here
we
aimed
provide
baseline
data
the
eastern
Weddell
Sea,
which
particularly
remote,
suggested
an
area
conservation.
By
analyzing
gastrointestinal
tracts
40
specimens
from
five
species,
report
overall
incidence
rate
0.23.
than
recent
studies
have
found
other
Southern
Ocean,
below
global
means.
The
highest
was
detected
L.
squamifrons
(0.67),
followed
P.
evansii
(0.29).
most
common
polymer
polyethylene
recovered
8
particles
(42.1
%)
one
specimen,
while
remaining
11
microplastics
polyester
(36.8
%).
study
shows
even
region
Antarctic
Ocean
with
almost
no
vessel
traffic,
fisheries
or
touristic
activity,
bathydemersal
bathypelagic
exhibit
their
tract.
Environments,
Год журнала:
2025,
Номер
12(3), С. 77 - 77
Опубликована: Март 2, 2025
In
recent
years,
microplastic
pollution
has
become
one
of
the
major
global
concerns
and
represents
a
complex,
multidimensional,
multisectoral
reality.
The
considerable
existing
data
relating
to
in
matrices
such
as
water
soil
suggests
that
microplastics
are
widespread
globally,
but
there
several
knowledge
gaps
regarding
their
actual
distribution
mostly
remote
locations
far
from
sources.
this
review
we
examine
current
on
Antarctic
continent.
Antarctica,
unique
continent
not
permanently
anthropized,
is
southernmost
part
planet
its
geographic
isolation
does
protect
against
harmful
impact
human
activities.
This
characterized
by
limited
internal
sources
high-burden
external
routes
contaminants
natural
laboratory
analyze
how
can
reach
every
biosphere.
reports
presence
organic
inorganic
only
at
marine
level
(water,
sediments,
benthic
organisms,
krill,
fish)
also
freshwater
(lakes,
rivers,
snow,
glaciers)
highlighting
contamination
endemic
environment.
Microplastic
great
environmental
concern
everywhere,
characteristics
ecosystems
suggest
they
could
be
more
sensitive
harm
pollution.
