Sustainability,
Год журнала:
2024,
Номер
16(11), С. 4541 - 4541
Опубликована: Май 27, 2024
The
complex
aquatic
system
of
dam
reservoirs
is
known
to
trap
emerging
pollutants
as
microplastics
(MPs)
in
sediments
and
water
column.
Considering
the
knowledge
gaps
this
type
environment,
we
investigated
amount
distribution
MPs
surface
layer,
well
deep
Siriu
Reservoir
Buzău
River
system,
which
located
southern
area
Eastern
Carpathians,
Romania.
There
was
a
discrepancy
between
MP
abundancy
both
sediment
samples
collected
near
reservoir
(5.3
MPs/m3,
315.5
MPs/kg)
at
several
kilometers
downstream
(1.4
132.5
MPs/kg).
chronological
accumulation
lacustrine
determined
by
analyzing
5
cm
intervals
50
length
core
extracted
from
bed.
By
comparing
concentration
identified
each
interval
with
solid
debit
volumes
registered
last
decade,
found
that
flood
events
could
be
traced
easily
due
abundant
accumulation.
Morphologically,
particles
were
observed
mainly
fibers
fragments.
Fourier
transform
infrared
spectroscopy
(FT-iR)
investigations
most
polypropylene
(28%),
polyethylene
(26%),
terephthalate
(19%).
Journal of Hazardous Materials Advances,
Год журнала:
2024,
Номер
14, С. 100416 - 100416
Опубликована: Фев. 27, 2024
As
millions
of
tonnes
plastics
wind
up
in
the
environment,
plastic
pollution
is
a
severe
issue
that
worsens
with
time.
In
addition
to
primary
particles,
large
items
are
fragmented
due
ultraviolet
radiation,
degradation,
and
other
environmental
causes,
resulting
minuscule
compounds,
known
as
microplastics
or
nanoplastics.
They
adsorb
hazardous
contaminants
easily
get
absorbed
by
organisms,
for
example,
polychlorinated
biphenyls,
polycyclic
aromatic
hydrocarbons,
heavy
metals
adhered
microplastic
surfaces
their
tiny
size
surface
area.
Studies
on
toxicity
fate
crucial
light
these
challenges,
but
effectiveness
depends
sampling
procedure,
sample
preparation,
characterization,
analysis,
quantification
techniques.
The
standard
methods
characterization
performed
using
Fourier
transform
infrared
resonance,
Raman
Spectroscopy,
pyrolysis
Gas
Chromatography
Mass
Spectrometry.
Unfortunately,
none
techniques
can
achieve
in-situ
non-invasive
characterization.
These
processes
complex,
non-uniform
across
studies,
different
specific
domains
such
soil/sediment,
water
groundwater,
biota,
atmosphere.
Thus,
current
study
highlights
methodology
being
used
sampling,
analysis
from
solid,
aqueous,
air,
biota
samples.
This
review
paper
also
specifies
tool
concentration
types
Future
studies
should
prioritize
development
standardized
protocols
ensure
comparability
diverse
ecosystems.
Additionally,
employing
advanced
analytical
collaborating
interdisciplinary
fields
enhance
accuracy
reliability
separation
methods.
Ecotoxicology and Environmental Safety,
Год журнала:
2023,
Номер
266, С. 115537 - 115537
Опубликована: Окт. 6, 2023
This
study
focused
on
the
distribution
of
microplastics
in
water
and
sediment
Ganges
River
Basin
to
Meghna
Estuary
Bangladesh.
Thirty
points
were
sampled
from
Chapainawabganj
district
(India-Bangladesh
border)
Chandpur
(Meghna
Estuary).
The
morphological
appearances
recognized
by
stereomicroscope
SEM-EDX
analysis.
Potential
ecological
risks
also
measured.
average
microplastic
concentration
upstream
downstream
was
50.9
±
24.4
particles/L
64.1
26.3
particles/L,
respectively,
2953.49
1670.52
particles/kg
4014.66
1717.59
sediment.
In
water,
most
dominant
appearance
fragment
shape,
blue
colour
1-2
mm
size.
fragments
red
0.1-0.5
sediment,
<
0.1
fibre
Seven
polymer
types
discovered
dominated
low-density
polyethylene
(LDPE),
eight
polyamide
(PA).
correlation
between
size
shape
particles
analyzed
using
principal
component
overall
pollution
load
index
1.86,
higher
than
other
studies
done
Surprisingly,
nemerow
(NPI),
contamination
factor
(CF),
(PLI),
hazard
(PHI),
potential
risk
(Ei)-
all
five
indicators
had
low
very
high
due
exposure.
data
produced
through
this
will
drive
increasing
awareness
regarding
vast
river
ecosystem.
Given
widespread
presence
pollution,
it
highlights
necessity
for
continuous
national
monitoring
microplastics.
TrAC Trends in Analytical Chemistry,
Год журнала:
2023,
Номер
166, С. 117190 - 117190
Опубликована: Июль 17, 2023
Microplastics
(MPs)
form
the
most
investigated
plastic
category
since
their
size
(1
μm-
5
mm)
enables
them
to
accumulate
in
various
environmental
compartments
and
be
ingested
by
biota.
Beach
sand
sediment
can
indicators
of
MP
contamination
levels
coastal
marine
ecosystem
and,
thus,
they
are
widely
analyzed.
With
increasing
number
publications
recent
years,
there
is
a
need
for
constant
updates
on
variety
extraction
analysis
procedures
developed.
Thus,
this
review
aims
evaluate
sample
preparation
techniques
MPs
provide
critical
discussion
determination
based
studies
published
last
years.
We
also
report
conditions
imposed
identification
quantification
isolation
as
well
materials
used
procedures.
Finally,
we
address
expectations
new
challenges
related
instrumental
innovations.
