Ecological Indicators,
Journal Year:
2023,
Volume and Issue:
150, P. 110215 - 110215
Published: April 6, 2023
Microplastic
(MP)
pollution
is
a
major
environmental
concern
for
mountain
ecosystem
and
high-mountain
lakes
in
particular,
which
are
recognized
indicators
of
global
change.
In
this
study,
the
presence
MPs
was
assessed
abiotic
(water
sediment)
biotic
(zooplankton,
tadpoles,
fish)
compartments
two
(Upper
Lake
Balma
Lower
Balma)
Cottian
Alps
(northwest
Italy).
No
were
found
water
zooplankton
samples,
whereas
mean
sediment
samples
1.33
±
0.67
items/m3
1.75
0.62
Upper
Balma,
respectively.
The
tadpoles
Rana
temporaria
0.33
0.58
items/individual
0.66
number
items
gastrointestinal
tract
(GIT)
fish
(Salvelinus
fontinalis)
considerably
higher
specimens
from
(0.45
items/g
GIT)
than
those
(0.20
GIT).
There
negative
relationship
between
size
(weight
age)
abundance
GIT
fish,
indicating
that
young
accumulated
more
MP
probably
due
to
high
prey
ingestion
rate
compared
adults.
same
color
(blue,
white,
black),
shape
(fibers
fragments),
chemical
type
(polypropylene
polyethylene)
both
lakes.
Our
findings
suggest
use
S.
fontinalis
as
an
indicator
Further
studies
needed
better
understand
sources
effects
these
remote
ecosystems.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
874, P. 162193 - 162193
Published: Feb. 23, 2023
Literature
regarding
microplastics
in
the
atmosphere
has
advanced
recent
years.
However,
studies
have
been
undertaken
isolation
with
minimal
collaboration
and
exploration
of
relationships
between
air,
deposition
dust.
This
review
collates
concentrations
(particle
count
mass-based),
shape,
size
polymetric
characteristics
for
ambient
air
(m3),
(m2/day),
dust
(microplastics/g)
snow
(microplastics/L)
from
124
peer-reviewed
articles
to
provide
a
holistic
overview
analysis
our
current
knowledge.
In
summary,
featured
<1
>1000
microplastics/m3
(outdoor)
microplastic/m3
1583
±
1181
(mean)
(indoor),
consisting
polyethylene
terephthalate,
polyethylene,
polypropylene.
No
difference
(p
>
0.05)
was
observed
indoor
outdoor
or
minimum
0.5).
Maximum
microplastic
sizes
were
larger
indoors
<
0.05).
Deposition
ranged
0.5
1357
microplastics/m2/day
475
19,600
including
polystyrene,
polypropylene,
terephthalate.
Concentrations
varied
0.05),
being
more
abundant
indoors,
potentially
closer
sources/sinks.
maximum
reported
within
Road
2
477
microplastics/g
(mean),
polyvinyl
chloride,
Mean
microplastic/g
(remote
desert)
18
225
microplastics/g,
comprised
polyamide,
Snow
0.1
30,000
microplastics/L,
containing
10
67,000
The
smaller
Although
comparability
is
hindered
by
differing
sampling
methods,
analytical
techniques,
polymers
investigated,
spectral
libraries
inconsistent
terminology,
this
provides
synopsis
knowledge
date
atmospheric
microplastics.
Water,
Journal Year:
2021,
Volume and Issue:
13(19), P. 2710 - 2710
Published: Sept. 30, 2021
Microplastic
disposal
into
riverine
ecosystems
is
an
emergent
ecological
hazard
that
mainly
originated
from
land-based
sources.
This
paper
presents
a
comprehensive
review
on
physical
processes
involved
in
microplastics
transport
ecosystems.
governed
by
characteristics
(e.g.,
plastic
particle
density,
shape,
and
size)
hydrodynamics
laminar
turbulent
flow
conditions).
High-density
are
likely
to
prevail
near
riverbeds,
whereas
low-density
particles
float
over
river
surfaces.
occurs
either
due
gravity-driven
(vertical
transport)
or
settling
(horizontal
Microplastics
subjected
various
natural
phenomena
such
as
suspension,
deposition,
detachment,
resuspension,
translocation
during
processes.
Limited
information
available
rising
velocities
for
polymeric
particles.
Therefore,
this
highlights
how
appropriately
empirical
models
explain
vertical
horizontal
distribution
of
microplastic
interact,
thus
feedback
loops
within
the
environment
govern
their
fate,
particularly
these
under
increasing
biodiversity
loss
climate
change
threat.
provides
outlines
fate
ecosystems,
which
will
help
scientists,
policymakers,
stakeholders
better
monitoring
mitigating
pollution.
The Science of The Total Environment,
Journal Year:
2022,
Volume and Issue:
825, P. 153935 - 153935
Published: Feb. 19, 2022
The
fate
of
mismanaged
plastic
waste
released
into
oceans
(ocean
plastics)
remains
a
topic
debate,
where
the
mass
imbalance
between
leakage
and
abundance
in
world's
appears
paradoxical.
In
present
study,
budget
for
ocean
was
estimated
based
on
combination
numerical
particle
tracking
linear
mass-balance
models,
both
validated
using
worldwide
dataset.
Integrating
time
series
macroplastic
emission
from
rivers
fisheries
industry
over
period
1961-2017
yielded
total
25.3
million
metric
tonnes
(MMT).
Macro-
microplastics
currently
floating
oceans,
beaches,
each
account
3-4%
plastics
emitted
to
date.
Overall,
23.4%
were
macroplastics
beaches.
Meanwhile,
66.7%
heavier
than
seawater
or
removed
upper
which
are
difficult
monitor
under
current
observation
frameworks
adopted
worldwide.
However,
study
suggested
that
whole
accounted
only
4.7%
(542.2
MMT)
generated
1960s
today.
Earth-Science Reviews,
Journal Year:
2022,
Volume and Issue:
226, P. 103924 - 103924
Published: Jan. 21, 2022
The
cryosphere
is
the
term
used
to
describe
frozen
areas
of
Earth,
including
all
forms
snow
and
ice,
which
are
primarily
influenced
by
anthropogenic
pollutants
through
atmospheric
transport.
In
this
review,
we
described
current
status
newly
emergent
pollutant-microplastics-in
ice
typical
cryospheric
regions
(e.g.,
Arctic,
Antarctic,
Alps,
Tibetan
Plateau,
Andes),
discussed
their
transport
pathways,
provided
perspectives
for
future
research.
A
brief
summary
sampling,
pretreatment,
identification
microplastics
in
suggested
that
standard
procedures
were
inadequate
urgently
required
improvement.
Microplastics
widely
distributed
across
regions,
indicating
ubiquitous
distribution
such
environments.
However,
abundance,
size
distribution,
shape,
polymer
composition
showed
significant
differences.
Sea
was
especially
important
temporal
storage,
transport,
release
Arctic
Antarctic.
land
cover
mountain
glaciers
emphasized
importance
transferal
regions.
particular,
non-polar
Andes,
or
Alps)
highlighted
as
receptors
mid-latitude
emissions
microplastics,
might
indicate
a
climatic
risk
considering
ability
absorb
radiation
accelerate
melting
snow.
retrieved
from
glacier
cores
may
also
provide
new
insights
into
historical
variations
pollutants.
potential
impact
on
carbon
cycle
needs
be
further
addressed
future.
