Microplastic Contamination in Agricultural Soils Across India: A Systematic Review of Studies and Research Gaps
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 4, 2025
Abstract
Microplastic
contamination
in
India
has
been
extensively
studied
aquatic
ecosystems,
yet
its
implications
for
agricultural
soils
remain
insufficiently
addressed.
This
research
paper
bridges
this
gap
by
analyzing
data
from
73
studies
published
between
2020
and
2024,
synthesizing
findings
on
microplastic
across
diverse
ecosystems
assessing
their
potential
impact
land.
While
most
focus
microplastics
beaches,
rivers,
lakes,
ponds,
only
a
limited
number
directly
investigate
soils,
highlighting
significant
gap.
Key
sources
identified
include
irrigation
with
polluted
water,
atmospheric
deposition,
industrial
discharge,
inadequate
waste
management,
practices
such
as
plastic
mulch
use.
In
Northern
India,
extensive
networks
sourcing
water
the
Ganga,
Yamuna,
Sutlej
rivers
pose
risks
of
infiltration
into
farmland.
Western
experiences
high
due
to
effluents,
urban
waste,
practices.
Southern
Eastern
coastal
regions
face
marine
estuarine
pollution,
potentially
affecting
soil
crop
health.
Additionally,
Northeastern
shows
threats
microplastic-laden
bodies
deposition
near
lands.
The
review
underscores
urgent
need
standardized
methodologies,
comprehensive
sampling,
targeted
pathways
ecosystems.
By
identifying
high-risk
zones
knowledge
gaps,
study
provides
foundation
future
aimed
at
mitigating
growing
threat
pollution
India’s
sector.
Addressing
these
challenges
is
crucial
ensuring
health,
food
security,
environmental
sustainability.
Язык: Английский
Distribution, Sources, and Heavy Metal Interactions of Microplastics in Groundwater and Sediment of Semi‐Arid Regions of Northwest India
Land Degradation and Development,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 22, 2025
ABSTRACT
Microplastic
(MP)
pollution
is
a
growing
public
health
concern,
yet
its
presence
in
groundwater,
critical
potable
water
source,
remains
underexplored.
This
study
investigates
MPs
groundwater
from
open
and
closed
well
systems,
as
sediment
samples,
the
semi‐arid
region
of
Didwana‐Kuchaman,
Rajasthan,
Northwest
India.
The
MPs,
identified
using
fluorescence
microscope,
were
ubiquitous
at
all
sampling
sites,
with
concentrations
ranging
3
to
122
particles/L
(average
=
35.46
particles/L)
abundance
170
1140
particles/kg
505.52
particles/kg).
Morphologically,
beads/pellets
within
20–200
μm
size
range
dominated
MP
while
polyethylene
polystyrene
dominant
polymer
types.
A
significant
positive
correlation
(
r
0.65)
between
concentration
open‐well
samples
was
noted,
highest
values
observed
near
landfills
agricultural
areas.
Heavy
metals
(HMs)
(ppb)
ranked
following
order:
As
(396.11)
>
Mn
(280.18)
Zn
(184.67)
Co
(71.8)
Ni
(60.56)
Pb
(24.24)
Cr
(1.26).
hazard
quotient
derived
for
both
children
adults
indicates
Co,
significantly
above
acceptable
threshold
(HQ
1),
suggesting
considerable
contamination
risk.
Although
no
HMs
SEM–EDX
analysis
revealed
adherence
HMs,
including
Ni,
As,
Cr,
Zn,
Mn,
Pb,
surfaces,
potential
interactions
co‐transport
mechanisms.
results
underscore
concerning
co‐occurrence
raising
alarming
concerns
about
synergistic
effects.
highlights
urgent
need
comprehensive
risk
assessments
mitigation
strategies
addressing
HM
resources.
Язык: Английский