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.
Water,
Год журнала:
2025,
Номер
17(8), С. 1136 - 1136
Опубликована: Апрель 10, 2025
Marine
microplastics
are
a
global
environmental
issue,
and
understanding
their
distributions
in
estuaries
coastal
areas
is
critical
prerequisite
for
the
effective
sustainable
management
of
microplastic
pollution.
Owing
to
lack
methods
that
exist
quantifying
content,
characterizing
distribution
difficult.
The
mass
concentration
an
objective
indicator
reflects
distribution.
Therefore,
formula
calculating
proposed
through
parameters
number
concentration,
size,
mesh
addition
proportions
particles
with
different
sizes
shapes.
On
basis
large
amount
existing
measured
data,
concentrations
calculated.
It
can
be
concluded
polypropylene
(PP;
72%)
polyethylene
(PE;
67%)
most
abundant
ocean.
Additionally,
marine
more
common
(102–103
mg/L)
than
open
sea
(0–10
mg/L).
maximum
surface
water
approximately
8.0
g/L.
Moreover,
pollution
has
significantly
increased
surrounding
sewage
treatment
plants
aquaculture
farms.
Microplastics,
Год журнала:
2025,
Номер
4(2), С. 24 - 24
Опубликована: Май 7, 2025
Microplastics
(MPs),
defined
as
plastic
particles
smaller
than
5
mm,
are
an
emerging
global
environmental
and
health
concern
due
to
their
pervasive
presence
in
aquatic
ecosystems.
This
systematic
review
synthesizes
data
on
the
distribution,
shapes,
materials,
sizes
of
MPs
various
water
sources,
including
lakes,
rivers,
seas,
tap
water,
bottled
between
2014
2024.
Results
reveal
that
river
constitutes
largest
share
studies
MP
pollution
(30%),
followed
by
lake
(24%),
sea
(19%),
(17%),
(11%),
reflecting
critical
roles
transport
accumulation.
Seasonal
analysis
indicates
concentrations
peak
wet
season
(38%),
dry
(32%)
transitional
(30%)
seasons.
Spatially,
China
leads
research
globally
USA
(7.8%)
India
(5.9%).
predominantly
composed
polyethylene
(PE),
polypropylene
(PP),
terephthalate
(PET),
with
fibers
fragments
being
most
common
shapes.
Sub-millimeter
(<1
mm)
dominate
globally,
significant
variations
driven
anthropogenic
activities,
industrial
discharge,
factors
such
rainfall
temperature.
The
study
highlights
gaps
understanding
long-term
ecological
impacts
MPs,
emphasizing
need
for
standardized
methodologies,
improved
waste
management,
innovative
mitigation
strategies.
underscores
urgency
addressing
microplastic
through
collaboration
stricter
regulatory
measures.
Toxics,
Год журнала:
2024,
Номер
12(8), С. 542 - 542
Опубликована: Июль 26, 2024
Microplastic
pollution
is
a
pervasive
issue,
with
remarkably
high
concentrations
observed
even
in
the
most
remote
locations
such
as
Arctic
sea
ice
and
snow.
The
reason
for
large
microplastic
abundances
still
speculative
applies
mainly
to
saline
or
freshwater
conditions.
In
this
study,
we
investigated
seasonal
core
samples
collected
March
2021
from
northern
Baltic
Sea
(Gulf
of
Bothnia)
their
distributions.
characterized
by
low
salinity
can
be
ice-covered
up
six
months
annually.
Microplastics
were
analyzed
melted
using
an
adsorption
technique
Raman
microscopy
identify
abundances,
colors,
shapes,
sizes
calculate
masses.
Due
strong
dynamic
layer
repeated
melting
freezing
processes
during
formation,
no
discernible
trends
masses,
polymer
types
throughout
length.
average
abundance
(±SD)
was
determined
22.3
±
8.6
N
L
Journal of Environmental Management,
Год журнала:
2024,
Номер
368, С. 122207 - 122207
Опубликована: Авг. 23, 2024
Mountain
salts
produced
from
the
highland
region
in
NE
Sarawak
have
a
market
value
and
also
provide
basic
income
to
communities.
During
salt-making
process,
microplastics
(MPs)
may
enter
into
commercial
table
various
sources,
which
has
not
been
explored
yet.
Hence,
current
research
investigates
presence
of
MPs
rock
saline
water
two
different
locations
(L1
L2)
Sarawak.
Among
brine
salt
samples
analysed,
highest
concentrations
were
detected
samples.
It
revealed
that
both
concentration
occurring
within
size
range
1-1000
μm.
Transparent
are
most
common
colour
observed
samples,
followed
by
white,
blue,
red,
black.
The
prevalent
shapes
fibers,
account
for
almost
47%
87%
Based
on
ATR-FTIR
study,
polyethylene
(PE)
is
polymer
polypropylene
(PP),
polystyrene
(PS),
terephthalate
(PET).
In
PP
dominating
polymer,
PE
PS.
Through
SEM
microphotographs,
fiber-type
smooth
surfaces,
fragment-type
rough
edges,
sheet-type
layered
surfaces.
EDX
analysis
carbon
(C)
oxygen
(O)
abundant
elements,
aluminium
(Al)
sodium
(Na)
MPs.
results,
it
inferred
mainly
sourced
stages
production.
This
preliminary
study
shed
light
characteristics
this
region.
outcomes
could
support
sustainable
management
plans
improve
quality
enhance
value.
Microscopy Research and Technique,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 2, 2024
Microplastic
(MP)
contamination
has
become
a
serious
environmental
concern
that
affects
terrestrial
environments,
aquatic
ecosystems,
and
human
health.
The
current
study
assesses
the
presence,
abundance,
morphology
of
MPs
present
in
surface
water
Rohtak
district,
Haryana,
India,
which
is
rapidly
undergoing
industrialization.
While
morphological
studies
were
conducted
through
stereo
microscopy
field
emission-scanning
electron
(FE-SEM),
elemental
composition
polymers
was
analyzed
attenuated
total
reflectance-Fourier
transform
infrared
(ATR-FTIR).
results
revealed
significantly
contaminated
by
polyethylene,
polypropylene,
polystyrene.
Moreover,
abundance
found
to
be
16-28
particles/L
with
an
average
value
23
particles/L.
Most
had
fibrous
specifics
being,
fibers
(43.9%),
fragments
(23.7%),
films
(17%),
pellets
(15.4%).
exhibited
size
range
0.61-4.87
mm,
measured
at
2.03
±
0.04
mm.
Also,
MP
pollution
load
index
values
for
bodies
below
10,
indicating
low
risk
category.
Though
currently
designated
as
"low
risk,"
it
important
mitigation
strategies
brought
over
this
juncture
further
prevent
deterioration
quality
water.
Thus,
not
only
intends
bring
forth
impact
activities,
industrial
waste,
open
waste
dumping,
inadequate
municipal
management
practices
on
increasing
concentration
but
also
highlights
sustainable
alternatives
address
emerging
pollutant
urban
systems.
For
prevention,
implementation
stringent
regulations
on-site
plastic
segregation
critical
component
preventing
disposal
bodies.
RESEARCH
HIGHLIGHTS:
particles/L,
district
fall
into
hazard
categories
less
than
10.
overall
water,
across
all
five
areas,
based
color
order:
white/transparent
(39.1%),
black
(15%),
gray
(9.1%),
green
(8.7%),
blue
(7.8%),
red
orange
(6.3%),
yellow
(6.1%).
dominant
polyethylene
(PE)
(42%)
polypropylene
(41%)
determined
FTIR
spectroscopy.
