Contamination
of
microplastics
in
soil
and
water
environments
has
become
a
matter
concern
globally.
To
explore
the
existence
agricultural
soils,
this
study
was
carried
out
different
systems
with
distinct
agronomic
practices
farm
inputs.
A
simple
cost-effective
digestion-density
separation
method
adapted
to
digest,
extract,
segregate
from
quantify
occurrence
microplastics.
The
pretreatment
Fenton
reagent
saturated
sodium
chloride
further
addition
30%
H2O2
at
60±2°C
reduced
organic
81%.
After
reducing
interference,
were
quantified.
With
microfibres
as
most
predominantly
found
microplastic
shape,
mean
abundance
observed
follows:
treated
sewage
irrigated
field
(1650±0.00
items
kg-1)
>
paddy
(1500±0.71
integrated
farming
system
(1250±2.12
inorganic
fertilizers
applied
(1025±4.60
manures
(1000±0.71
plastic
mulched
(800±5.66
kg-1).
per
cent
concentration
blue
(37.71±3.10),
black
(29.41±1.75),
pink
(23.87±1.62)
commonly
identified
colors
ascendancy
while
polyethylene
dominating
among
sorted
confirmed
through
PCA.
This
reveals
that
possible
sources
are
likely
inputs
used
farmlands
atmospheric
deposition
studied
lands.
Such
observations
systematic
emphasize
need
implement
sustainable
protect
quality
promote
public
health.
is
first
its
kind
work
Agricultural
Soils
India,
which
offers
significant
insights
into
present
status
pollution
soils
within
Coimbatore
area
Tamil
Nadu,
India.
These
findings
can
potentially
guide
policy
decisions
aimed
environmental
health
hazards
linked
contamination
initial
stages.
The Science of The Total Environment,
Год журнала:
2023,
Номер
896, С. 165291 - 165291
Опубликована: Июль 3, 2023
Microplastics
(MPs)
are
small
plastic
pieces
less
than
5
mm
in
size.
Previous
studies
have
focused
on
the
sources,
transports,
and
fates
of
MPs
marine
or
sediment
environments.
However,
limited
attention
has
been
given
to
role
land
as
primary
source
MPs,
how
polymers
transformed
into
through
biological
abiotic
effects
during
transport
process
remains
unclear.
Here,
we
focus
exploration
main
sources
soil,
highlighting
that
MP
generation
is
not
solely
a
byproduct
production
but
can
also
result
from
impact
factors
transport.
This
review
presents
new
perspective
understanding
degradation
considering
soil
distinct
fluid
suggesting
transformation
change
mediated
by
occur
surface,
while
biodegradation
occurs
interior.
viewpoint
suggested
because
some
becomes
obvious
interior,
whose
surface
expected
colonize
microorganisms,
gradually
considered
carbon
independent
photosynthesis
net
production.
emphasizes
need
understand
basic
information
for
rational
evaluation
its
environmental
toxicity.
Such
enables
better
control
pollution
affected
areas
prevents
contamination
unaffected
regions.
Finally,
knowledge
gaps
future
research
directions
necessary
advancements
this
field
provided.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(41), С. 15656 - 15666
Опубликована: Сен. 25, 2023
Nanoplastics
(NPs)
have
different
colors,
which
could
affect
their
photoaging
processes
in
aquatic
environments.
This
study
investigated
the
effects
of
irradiation
on
physicochemical
properties
and
aggregation
kinetics
five
colored
NPs.
Photodegradation
rates
photooxidation
degrees
ranked
white
≈
yellow
>
red
blue
black
NPs,
indicating
that
NPs
with
longer
color
wavelengths
photoaged
faster.
The
discoloration
process
followed
fading
(2-14
days,
except
for
NPs),
yellowing
(10-16
days),
(18
turning
transparent
(20-22
days).
White
exhibited
a
sequence
(C-H
→
C-OH
C═O
O-C═O)
from
others.
was
mainly
controlled
by
singlet
oxygen,
producing
13
chemicals
were
mostly
organic
acids.
overall
colloidal
stability
pristine
white.
Irradiation
16
days
retarded
other
NaCl
solution,
raising
critical
coagulation
concentration
(CCC)
82.14
0.85-7.90%,
respectively.
Contrarily,
promoted
CaCl2
solution
reducing
CCC
(67.37%)
(33.33-37.58%)
findings
demonstrate
underwent
white/transparent
focused
previous
work,
highlighting
important
role
environmental
fate
transport.
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 20
Опубликована: Фев. 5, 2024
To
explore
the
existence
of
microplastics
(MPs)
in
agricultural
soils
Coimbatore
region
Tamil
Nadu,
India,
this
study
was
carried
out
six
sites
with
distinct
agronomic
practices
and
inputs.
Using
density-digestion
separation
method,
81%
organic
matter
(OM)
removed
MPs
were
quantified
characterised
using
a
stereo
microscope
ATR-FTIR.
MP
abundance
treated
sewage
irrigated
field
(1,650
items
kg−1)
>
paddy
(1,500
integrated
farming
system
(1,250
inorganic
fertilisers
applied
(1,025
manures
(1,000
plastic
mulched
(800
assessed
more
than
50%
at
<
500
µm
size,
which
exhibited
that
smaller
tend
to
transfer
into
soil
layers
affect
organisms
through
food
chain.
The
most
prevailing
colours
blue
(37.71%),
black
(29.41%),
pink
(23.87%)
polyethylene
as
widely
distributed
polymer
type
among
all
composition.
risk
assessment
revealed
highest
hazard
level
category
V
contamination
irrespective
abundance.
This
emphasises
significant
influence
inputs,
irrigation
practices,
location,
atmospheric
inputs
provides
baseline
for
further
research
understand
trophic
ecosystems
its
effects
on
Journal of Environmental Management,
Год журнала:
2024,
Номер
367, С. 121951 - 121951
Опубликована: Июль 30, 2024
This
comprehensive
review
critically
assesses
traditional
and
emerging
technologies
for
domestic
wastewater
treatment
reuse,
focusing
on
the
transition
from
conventional
centralised
systems
to
innovative
decentralised
approaches.
Through
an
extensive
literature
search
serving
a
population
equivalent
of
less
than
or
equal
10,
study
juxtaposes
linear
circular
methods
highlights
their
impact
urban
water
management
environment.
The
papers
reviewed
were
classified
into
five
categories:
Environmental
studies,
economic
social
technological
reviews
policy
papers.
analysis
was
carried
out
separately
approaches
within
each
category.
In
addition,
maturity
technology
(lab/pilot
full-scale
application)
taken
account
in
analysis.
research
landscape
is
shown
be
evolving
towards
that
promise
sustainability
through
resource
recovery,
despite
dominance
perspectives.
lack
clear
progress
technologies,
scarcity
circularity
assessments
challenges
integration
are
highlighted.
Operational
reliability,
regulatory
compliance
support
identified
as
key
barriers
adoption
systems.
While
pollutants
environmental
impacts
well
addressed
systems,
its
infancy.
Conclusions
these
hazardous
tentative
cautious.
Social
studies
mainly
based
virtual
scenarios,
which
useful
tools
achieving
goals.
conceptual
frameworks
assessing
dimension
need
further
refinement
effective.
paper
argues
balanced
centralisation
decentralisation,
proposing
dual
strategy
emphasizes
development
interoperable
technologies.
It
calls
research,
widespread
implementation
promote
solutions
pave
way
sustainable
ecosystems.
MethodsX,
Год журнала:
2024,
Номер
12, С. 102777 - 102777
Опубликована: Май 31, 2024
The
contamination
of
microplastics
in
humans
is
increasing
concern.
Therefore,
the
aim
this
study
was
to
develop
effective
methods
determine
concentration
and
types
entering
human
digestive
system.
To
levels
MPs
humans,
an
excellent
indicator
are
stools.
Indeed,
stools,
thus
system,
can
be
level
humans.
Hence,
objective
find
extract,
quantify
characterize
stool
small
intestine
samples.
samples
studied
were
stools
pig
jejunum
(which
has
human-like
characteristics).
optimized
by
observing
extraction
efficiency,
compatibility
Fourier-transform
infrared
spectroscopy
(FTIR)
characterization
non-deformation
microplastics.
steps
procedure
were:•
Sampling
avoid
plastic
contamination•
Non-aggressive
chemical
enzymatic
digestion•
Counting
characterizationThe
validated,
recovery
repeatability.
two
simple,
with
high
analytical
performance
have
been
developed.
present
counted
stereoscopic
microscope
characterized
FTIR,
finding
several
such
as
synthetic
cellulose,
polyethylene,
polypropylene,
polystyrene,
polyethylene
terephthalate,
among
others.
