Sustainability,
Journal Year:
2025,
Volume and Issue:
17(5), P. 2084 - 2084
Published: Feb. 28, 2025
Maize
and
wheat
grains
are
at
significant
risk
of
accumulating
excessive
heavy
metals
in
acidic
soils,
but
relatively
few
comparative
studies
have
been
conducted
on
the
two.
This
study
employed
Spearman
correlation
analysis,
random
forest
modeling,
structural
equation
modeling
to
systematically
investigate
interdependences
between
soil
properties
metal
accumulation
(Cd,
Cr,
As,
Pb,
Hg)
cereal
grains.
The
results
revealed
distinct
patterns
content
sequences
maize
grains:
exhibited
Cr
>
Pb
As
Cd
Hg,
while
followed
Hg.
Bioconcentration
factor
(BCF)
differed
significantly,
showing
Hg
versus
wheat.
Soil
cation
exchange
capacity
demonstrated
strongest
influence
both
crops.
Arsenic
mechanisms
displayed
species-specific
dependencies,
with
primarily
regulated
by
organic
matter
clay
content.
Notably,
a
positive
(p
≤
0.05)
concentrations
was
observed
crops,
suggesting
potential
homologous
pollution
sources.
These
findings
elucidate
crop-specific
governed
physicochemical
properties.
demonstrates
that
under
similar
growing
conditions,
(BCF
=
0.068)
exhibits
weaker
ability
accumulate
compared
0.467).
Moreover,
showed
responses
properties,
particularly
their
Cd.
By
addressing
contamination
this
work
supports
development
safer
agricultural
practices
improved
crop
quality
control.
Land,
Journal Year:
2025,
Volume and Issue:
14(2), P. 221 - 221
Published: Jan. 22, 2025
Heavy
metal
contamination
in
soil
is
a
global
issue
threatening
human
health
and
ecosystems.
Accurate
spatial
maps
of
heavy
metals
(HMs)
are
vital
to
mitigating
the
adverse
effects
on
ecosystem.
This
study
utilizes
GIS
multivariate
analysis
evaluate
HMs
agricultural
soils
from
Al
Ghat
Governorate,
Saudi
Arabia,
analyzing
Al,
As,
Co,
Cr,
Cu,
Fe,
Mn,
Ni,
Pb,
V,
Zn
using
ICP-AES
35
samples.
Methods
included
factor
(CF),
enrichment
(EF),
risk
index
(RI),
geoaccumulation
(Igeo),
pollution
load
(PLI),
quality
guidelines
(SQGs),
analysis.
The
soils,
characterized
by
sandy
texture,
low
organic
matter,
alkalinity
due
arid
conditions
high
calcium
carbonate,
had
following
HM
concentrations
(mg/kg)
descending
order:
Fe
(11,480)
˃
(7786)
Mn
(278)
(72.37)
Ni
(28.66)
V
(21.80)
Cr
(19.89)
Co
(19.00)
Cu
(12.46)
Pb
(5.46)
As
(2.69).
EF,
CF,
Igeo
suggest
natural
sources
for
most
HMs,
predominantly
sedimentary
sequence,
with
localized
Zn,
linked
mixed
influences.
PLI
RI
indicated
acceptable
levels,
posing
no
ecological
risk.
All
samples
fell
below
SQG
thresholds
confirming
minimal
threat.
Statistical
highlighted
cover
as
primary
source,
activities
contributing
levels.
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
289, P. 117699 - 117699
Published: Jan. 1, 2025
A
comprehensive
understanding
of
cadmium
(Cd)
migration
in
soils
near
contaminated
hotspots
is
crucial
for
optimizing
remediation
efforts
and
ensuring
crop
health.
This
study
investigates
agricultural
from
four
sites
mining
sewage-irrigation
areas,
assessing
the
impact
inorganic
organic
fertilizer
application
on
soil
Cd
remobilization.
Results
revealed
that
fertilization,
particularly
with
mineral
phosphorus,
disrupts
stability,
substantially
increases
short-term
mobility
vulnerable
regions.
Random
Forest
analysis
identified
elevated
dissolved
matter
pH
changes
as
key
drivers
Monte
Carlo
simulation,
integrating
Michaelis-Menten
reaction
kinetics
model,
further
accessed
potential
risk
The
model
predicted
probabilities
grain
exceeding
thresholds
ranged
021.6
%
rice,
13.8
%100
wheat,
084.2
maize
absence
use.
Fertilization
significantly
increased
these
exceedance
by
6.1
%87.4
%,
highest
risks
observed
irrigation-contaminated
soils,
under
phosphorus
fertilization.
Nevertheless,
it
recommended
while
fertilization
can
elevate
remobilization
hotspots,
strategies
might
not
always
be
necessary.
highlights
hybrid
data-driven
approaches,
combining
machine
learning,
mechanistic
stochastic
prediction
to
simplify
complex
environmental
process,
allowing
integrated
evaluations.
