Water,
Год журнала:
2023,
Номер
15(5), С. 921 - 921
Опубликована: Фев. 27, 2023
The
widespread
occurrence
of
microplastics
(MPs)
has
resulted
in
their
interaction
with
biological
processes.
Thus,
there
is
a
great
concern
about
the
potential
toxicity
MPs
on
animal
and
plant
cells
possibility
that
reach
humans
through
food
web.
In
order
to
shed
light
both
issues,
laboratory
assays
were
performed
for
evaluating
effects
polyethylene
(PE)
microparticles
aquatic
Spirodela
polyrhiza
(L.)
Schleid.
gammarid
Echinogammarus
veneris
(Heller,
1865).
Moreover,
stock
MP-treated
plants
was
used
feed
individuals,
presence
MP
particles
digestive
tracts
analyzed.
Results
evidenced
lack
toxic
plants,
evaluated
at
growth
physiological
level
by
biometric
parameters,
pigment
content,
photosynthetic
performance
estimated
chlorophyll
fluorescence
imaging
ETPT
(EcoTox
Photosystem
Tool).
Only
slight
reduction
pigment-related
indices
observed.
A
remarkable
genotoxic
effect
instead
highlighted
Comet
assay
hemocytes
individuals
exposed
MPs,
three
times
more
DNA
damage
(expressed
as
Tail
Moment)
compared
control
ones.
Finally,
gut
content
gammarids
fed
revealed
7.6
particles/individual,
highlighting
trophic
transfer
among
freshwater
ecosystem
organisms.
Novel
indications
impact
PE
compartment
are
provided.
Notably,
between
primary
producer
consumer
organisms
chain
associated
ingestion
such
issues
web
leading
human
diet.
Environmental Pollution,
Год журнала:
2023,
Номер
323, С. 121303 - 121303
Опубликована: Фев. 15, 2023
Microplastic
(MPs)
pollution
has
become
a
subject
of
environmental
concern
due
to
its
wide
ubiquity
in
the
environment.
Microplastics
are
possible
sources
other
hazardous
chemicals
aquatic
organisms
their
composition
and
sorption
properties.
In
this
study,
MPs
occurrence
water
sediment
samples
Plankenburg
River,
Western
Cape,
South
Africa
was
investigated.
The
physicochemical
characterization
river
done
onsite.
30
L
were
collected
filtered
10
triplicates
through
250
μm
mesh
onsite
using
metal
bucket.
An
additional
12
sample
4
20
laboratory.
extraction
from
laboratory
by
density
separation.
Sediment
also
at
selected
sites,
oven-dried
microplastics
Sampling
conducted
over
four
seasons
-
spring,
summer,
autumn,
winter.
classified
visual
observation
Fourier
Transform
Infrared
Spectroscopy
(FTIR-ATR).
seasonal
distribution
surface
varied
across
all
sites.
However,
spring
had
highest
(5.13
±
6.62
MP/L)
least,
autumn
(1.52
2.54
MP/L).
observed
(1587.50
599.32
MP/kg).
Fibres
most
dominant
microplastic
particle
type
(shape),
with
size
range
500-1000
different
infrared
spectroscopic
analysis
confirmed
polymer
be
polyethylene.
This
study
provides
an
understanding
River
system
gives
baseline
for
future
monitoring
assessment
African
freshwater
systems.
ACS Omega,
Год журнала:
2023,
Номер
8(38), С. 34235 - 34248
Опубликована: Сен. 16, 2023
Microplastics
(MPs)─i.e.,
plastic
particles
less
than
5
mm
in
length─are
becoming
a
growing
environmental
concern
due
to
their
potential
ecotoxicological
impacts
on
aquatic
ecosystems.
In
India,
MPs
contamination
is
significantly
problem
increased
production
as
well
its
low
rate
of
recycling.
As
result,
research
work
India
has
gained
considerable
attention
the
last
two
decades.
The
objective
this
study
conduct
comprehensive
review
existing
scientific
literature
freshwater
ecosystems
(e.g.,
lakes
and
rivers)
India.
A
bibliographical
search
was
used
across
number
databases
including
ScienceDirect,
Google
Scholar,
ResearchGate.
We
found
that
comparison
marine
ecosystem
source,
transport,
fate
are
still
underexplored,
we
only
18
relevant
papers.
This
reveals
there
no
standard
procedure
for
separating
from
water
sediment
samples,
comparing
results
challenging
task.
larger
(>500
μm)
sediments
were
identified
most
commonly
using
attenuated
total
reflection
(ATR)
Fourier
Transform
Infrared
(FTIR)
spectroscopy
technique
(ATR-FTIR),
whereas
smaller-sized
(<500
FTIR
fitted
with
confocal
microscope,
also
known
μ-FTIR
imaging
or
chemical
imaging.
white-colored
fibers
fragments
polypropylene
(PP),
polyethylene
terephthalate
(PET),
(PE)
common
polymer
types
Although
momentum
over
past
decade,
limited
understanding
impact
MPs'
weathering
patterns,
role
biofouling,
hyacinths
services
Furthermore,
fluxes
Indian
oceans
not
constrained,
atmospheric
transport
high-altitude
mountains,
which
have
already
been
made
fragile
by
climate
change,
fully
investigated.
study,
therefore,
calls
additional
assessments
ecosystems─particularly
central
parts
