The Science of The Total Environment,
Год журнала:
2024,
Номер
942, С. 173808 - 173808
Опубликована: Июнь 5, 2024
High
concentrations
of
microplastic
(MP)
particles
have
been
reported
in
the
Arctic
Ocean.
However,
studies
on
high-resolution
lateral
and
vertical
transport
MPs
from
European
waters
to
are
still
scarce.
Here,
we
provide
information
about
compositions
surface,
subsurface,
deeper
(<
1
m,
~
4
17–1679
m)
collected
at
18
stations
six
transects
along
Norwegian
Coastal
Current
(NCC)
using
an
improved
Neuston
Catamaran,
COntinuos
MicroPlastic
Automatic
Sampling
System
(COMPASS),
situ
pumps,
respectively.
FTIR
microscopy
spectroscopy
were
applied
measure
MP
concentration,
polymer
composition,
size
distribution.
Results
indicate
that
small
microplastics
(SMPs,
<300
μm)
varied
considerably
(0–1240
m−3)
within
water
column,
with
significantly
higher
surface
(189
subsurface
(38
compared
(16
m−3).
Furthermore,
average
concentration
SMPs
samples
was
four
orders
magnitude
than
abundance
large
(LMPs,
>300
μm),
overall,
<50
μm
account
for
>80
%
all
detected
MPs.
no
statistically
significant
geographical
patterns
observed
SMP
surface/subsurface
seawaters
between
sampling
transects,
suggesting
a
relatively
homogeneous
horizontal
distribution
upper
ocean
NCC/Norwegian
Atlantic
(NwAC)
interface.
The
Lagrangian
particle
dispersal
simulation
model
further
enabled
us
assess
large-scale
Northern
Arctic.
Water Research,
Год журнала:
2023,
Номер
232, С. 119707 - 119707
Опубликована: Фев. 5, 2023
Microplastics
(MPs)
are
one
of
the
most
widespread
contaminants
worldwide,
yet
their
risks
for
freshwater
ecosystems
have
seldom
been
investigated.
In
this
study,
we
performed
a
large
monitoring
campaign
to
assess
presence
and
MPs
in
Amazonian
ecosystems.
We
investigated
MP
pollution
40
samples
collected
along
1500
km
Brazilian
Amazon,
including
Amazon
River,
three
major
tributaries,
several
streams
next
important
urban
areas.
55-5000
µm
size
range
were
characterized
(size,
shape,
color)
by
microscopy
identified
(polymer
composition)
infrared
spectroscopy.
Ecotoxicological
assessed
using
chronic
Species
Sensitivity
Distributions
effects
triggered
food
dilution
tissue
translocation
data
alignment
methods
that
correct
polydispersity
environmental
bioaccessibility.
This
study
shows
ubiquitous
ecosystems,
with
measured
concentrations
(55-5000
µm)
ranging
between
5
152
MPs/m3
River
its
main
23
74,550
streams.
The
calculated
Hazardous
Concentration
5%
species
(HC5)
derived
from
SSDs
entire
(1-5000
1.6
×
107
(95%
CI:
1.2
106
-
4.0
108)
dilution,
1.8
1.5
4.3
translocation.
Rescaled
exposure
tributaries
ranged
6.0
103
105
MPs/m3,
significantly
lower
than
HC5
values.
1.7
5.7
108
exceeded
both
values
20%
locations.
ecological
impacts
contamination
not
likely
happen
tributaries.
However,
organisms
may
be
expected
near
densely
populated
areas,
such
as
cities
Manaus
or
Belem,
which
limited
wastewater
treatment
facilities.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
271, С. 115942 - 115942
Опубликована: Янв. 12, 2024
The
global
production
and
consumption
of
plastics,
as
well
their
deposition
in
the
environment,
are
experiencing
exponential
growth.
In
addition,
mismanaged
plastic
waste
(PW)
losses
into
drainage
channels
a
growing
source
microplastic
(MP)
pollution
concern.
However,
complete
understanding
environmental
implications
throughout
life
cycle
is
yet
to
be
fully
understood.
Determining
potential
extent
which
MPs
contribute
overall
ecotoxicity
possible
through
monitoring
PW
release
MP
removal
during
remediation.
Life
assessments
(LCAs)
have
been
extensively
utilized
many
comparative
analyses,
such
comparing
petroleum-based
plastics
with
biomass
single-use
multi-use
alternatives.
These
typically
yield
unexpected
or
paradoxical
results.
Nevertheless,
there
still
paucity
reliable
data
tools
for
conducting
LCAs
on
plastics.
On
other
hand,
impact
so
far
not
considered
LCA
studies.
This
due
absence
inventory-related
regarding
releases
characterization
factors
necessary
quantify
effects
MP.
Therefore,
this
review
paper
conducts
comprehensive
literature
order
assess
current
state
knowledge
impacts
that
occur
along
strategies
management
LCA.
Ecological Indicators,
Год журнала:
2023,
Номер
150, С. 110200 - 110200
Опубликована: Апрель 3, 2023
Microplastic
pollution
has
become
pervasive.
Identifying
a
bioindicator
species
to
track
the
occurrence
and
effects
of
microplastics
(MPs)
on
ecosystems
is
crucial
for
determining
their
impact
environment.
The
digestive
tract
Procambarus
clarkii
was
thought
be
interest
investigating
MPs
accumulation
in
freshwater
organisms.
Our
hypothesis
that
same
type
found
abiotic
compartments
(water
sediment)
could
P.
clarkii,
which
would
make
it
an
ideal
candidate
use
as
MP
ecosystems.
Water,
sediment,
specimens
were
collected
from
four
sites
lentic
ecosystem
(Lake
Candia;
northwestern
Italy)
two
consecutive
years
(2021–2022).
mean
abundance
1.75
±
0.95
items/m3
2021
2
0.81
2022
water
samples
6.75
1.5
items/kg
8
sediment
2022,
respectively.
In
2021,
average
0.06
0.07
items/g
males
0.05
females;
0.04
females,
fibers
fragments
(black,
white,
blue,
light
blue)
polypropylene
polyethylene
terephthalate
biotic
compartments.
generalized
linear
mixed
model
revealed
number
predicted
only
by
total
weight:
lowest
recorded
crayfish
with
highest
weight
probably
due
feeding
habits
clarkii.
findings
suggest
invasive
(smaller
individuals,
particular)
good
since
items
Further
research
needed
better
understand
behavior
dynamics
aquatic
