The
study
in
Rey
county,
Tehran,
Iran,
examined
microplastics
(MPs)
and
heavy
metals
(Pb,
Cd,
Cu)
agricultural
soils.
Results
show
microplastic
quantities
(29-270
items
kg-1),
predominantly
small
particles
(100µm
to
500µm),
black
(42.70%)
white
(40.5%)
color,
with
Polystyrene
(PS)
Polypropylene
(PP)
as
dominant
polymers
from
plastic
mulches.
Soil
concentrations
of
Pb,
Cu,
Cd
averaged
30.41
mg
kg-1,
23.02
4.97
respectively.
Microplastic-AES
analysis
detected
Cu
(5.86
(3.45
kg-1).
Agricultural
activities,
especially
mulches,
contribute
significantly
soil
contamination,
emphasizing
the
need
for
sustainable
practices
region.
Frontiers in Plant Science,
Journal Year:
2024,
Volume and Issue:
15
Published: April 5, 2024
Arsenic
(As)
accumulation
in
plants
is
a
global
concern.
Although
the
application
of
arbuscular
mycorrhizal
fungi
(AMF)
has
been
suggested
as
potential
solution
to
decrease
As
concentration
plants,
there
currently
gap
comprehensive,
quantitative
assessment
abiotic
and
biotic
factors
influencing
accumulation.
A
meta-analysis
was
performed
quantitatively
investigate
findings
76
publications
on
impacts
AMF,
plant
properties,
soil
plants.
Results
showed
significant
dose-dependent
reduction
with
higher
infection
rates,
leading
19.3%
concentration.
AMF
reduced
As(V)
by
19.4%
but
increased
dimethylarsenic
acid
(DMA)
50.8%.
significantly
decreased
grain
34.1%.
also
improved
P
dry
biomass
33.0%
62.0%,
respectively.
The
most
reducing
effects
properties
were
seen
single
inoculation
experiments
intermediate
durations.
Additionally,
benefits
enhanced
when
texture,
organic
carbon
(SOC),
pH
level,
Olsen-P,
DTPA-As
sandy
soil,
0.8%–1.5%,
≥7.5,
≥9.1
mg/kg,
30–60
easily
extractable
glomalin-related
protein
(EE-GRSP)
total
(T-GRSP)
23.0%
28.0%,
Overall,
investigated
had
implications
developing
AMF-based
methods
for
alleviating
negative
stress
Ore and Energy Resource Geology,
Journal Year:
2024,
Volume and Issue:
17, P. 100059 - 100059
Published: July 20, 2024
Due
to
the
lack
coupling
analysis
of
heavy
metals
in
soil-plant-atmosphere
system,
migration
and
transformation
remains
unclear.
In
this
study,
240
surface
(0–20
cm)
soil
samples,
365
plant
samples
168
atmospheric
dust
were
collected
a
large
coal
mining
area,
which
selected
arsenic
(As),
cadmium
(Cd),
chromium
(Cr),
copper
(Cu),
nickel
(Ni),
plumbum
(Pb),
zinc
(Zn)
analyzed,
elucidate
spatial
distribution
source
their
bioavailability.
According
results
ArcGIS
mapping
analysis,
patterns
Cd,
Cu,
Pb,
Zn
three
media
are
similar,
while
characteristics
Cr
Ni
highly
consistent.
The
factors
contributing
these
could
be
associated
with
human
activities
elements.
Compared
background
value,
Zn,
Cr,
Pb
soil,
Cu
plants
apparently
accumulated.
geological
accumulation
pollution
index
(Igeo)
shows
that
there
exist
mild
moderate
levels
Cd
air.
evaluation
potential
risks
showed
ecological
hazards
strong
dust.
sources
assessed
using
principal
component
(PCA),
land
use
type,
analysis.
Anthropogenic
main
metal
content.
Coal-related
industrial
processes
related
coal,
sewage
irrigation,
agricultural
chemicals,
vehicle
emissions
may
anthropogenic
metals.
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
289, P. 117634 - 117634
Published: Jan. 1, 2025
In
recent
decades,
the
study
of
heavy
metal
pollution
has
garnered
significant
attention
owing
to
advancement
industrialization.
To
explore
contamination
metals
in
an
intensive
industrial
and
agricultural
region
Shandong
province,
China,
101
surface
soil
samples
80
edible
crop
parts
were
collected
from
vicinity
park.
A
positive
matrix
factorization-multilayer
perceptron
model
(PMF-MLP)
was
established
identify
sources
quantify
complex
relationships
between
sources,
types,
status.
Index
human
health-risk
methods
used
assess
pollution.
The
results
show
that
(1)
lead
(Pb)
cadmium
(Cd)
may
originate
industrial-traffic
mixed
surrounding
park,
whereas
copper
(Cu)
is
derived
southern
farmland.
(2)
Pollution
primarily
concentrated
central
northern
regions
area.
analysis
PMF-MLP
indicates
activities
account
for
majority
(79.6
%)
risk
associated
with
Among
them,
industrial,
traffic,
livestock
farms,
types
contribute
49.3,
24.5,
5.80
%
total
risk,
respectively.
(3)
oral
intake
represents
primary
route
entry
into
body.
Cd
Cu
are
most
elements
adverse
health,
contributing
carcinogenic
non-carcinogenic
risks
both
adults
children,
will
provide
references
formulation
control
strategies
curb
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 24, 2025
Abstract
Baotou,
a
city
renowned
for
its
steel
production
and
rare
earth
resource
development,
is
facing
significant
threats
from
heavy
metal
pollution
in
urban
soils.
This
study
analyzed
nine
soil
samples
Baotou
to
assess
the
bioavailability
of
metals,
including
elements
(REEs),
As,
Pb,
evaluate
environmental
risks
posed
by
these
The
bioavailabilities
REEs,
Pb
were
quantitatively
examined
through
vitro
simulated
digestion
experiments
involving
physiologically
based
extraction
tests
(PBET)
gastrointestinal
(IVG)
methods.
results
indicate
that
REEs
relatively
low,
with
higher
observed
PBET
compared
IVG
tests.
Overall,
REE
was
lower
than
those
As
gastric
phase
phase.
Speciation
analysis
revealed
approximately
80%
present
residual
fraction.
Meanwhile,
non-residual
fractions
primarily
composed
carbonate-bound,
Fe/Mn
oxides-bound,
strong
organic
matter-bound
exchangeable
accounting
less
0.5%.
PLoS ONE,
Journal Year:
2025,
Volume and Issue:
20(2), P. e0317527 - e0317527
Published: Feb. 13, 2025
Arsenic
is
a
widespread
environmental
contaminant
that
poses
significant
threat
to
global
health
due
its
toxicity
and
carcinogenicity.
Given
the
high
levels
of
arsenic
found
in
drinking
water
western
areas
Tehran,
objective
this
study
was
analyze
multiple
biological
samples
(blood,
hair,
nails)
collected
from
residents
living
these
areas.
This
cross-sectional
conducted
over
three
weeks
November
2022
five
villages.
A
total
67
villages
were
included
exposure
group.
Analysis
carried
out
by
using
Perkin
Elmer
Optima
8000
ICP-OES
instrument
coupled
with
FIAS
100
flow
injection
module
after
sample
digestion.
The
average
concentration
people’s
blood
4.19
μg/l,
which
exceeds
standard
limit
ATSDR
(1
μg/l)
about
4
times.
Additionally,
47.8%
exceeded
standard,
while
for
nail
hair
samples,
percentages
22.4%
13.4%,
respectively.
Water
showed
highest
percentage
above
67.2%.
There
no
relationship
between
water,
blood.
However,
positive
correlation
observed
samples.
mean
hazard
quotient
(HQ)
carcinogenic
risk
(CR)
indices
suggest
daily
intake
examined
area
acceptable
thresholds
((HQ
<
1)
(CR
1
×
10
−4
)).
Although
demonstrated
elevated
among
population
our
findings
concentrations
Therefore,
further
research
required
identify
other
potential
pathways
develop
targeted
intervention
strategies.
remediation
measures
improve
quality
remain
essential
rural
area.
Agriculture,
Journal Year:
2025,
Volume and Issue:
15(5), P. 545 - 545
Published: March 3, 2025
The
detection
of
available
Cr(VI)
in
soil
is
critical
due
to
its
high
uptake
by
plants,
which
enables
it
enter
the
food
chain
and
pose
significant
health
risks
humans.
Traditional
methods
are
often
time-consuming
labor-intensive,
limiting
their
suitability
for
rapid,
on-site
measurements.
This
study
introduces
a
novel
approach
rapid
soil,
utilizing
portable
X-ray
fluorescence
spectrometry
(pXRF)
combination
with
ion-exchange
resin.
method
was
validated
using
samples
from
three
distinct
regions,
representing
different
types.
Compared
conventional
laboratory
methods,
rates
ranged
80.73%
124.14%,
relative
standard
deviations
repeated
analyses
ranging
3.05%
5.73%,
both
comply
national
standards.
Regression
analysis
confirms
strong
linear
relationship
between
spectral
values
concentration
solutions
(R2
=
0.9986).
Through
resin
enrichment,
limit
(LoD)
solution
reaches
0.070
mg/kg,
facilitating
trace-level
soil.
In
contrast
traditional
pXRF-ion-exchange
minimizes
secondary
environmental
contamination,
cost-effective
time-efficient,
does
not
require
complex
pretreatment.
Consequently,
highly
suitable
analysis.
presents
an
innovative
soils.
effectively
reduced
time
simplified
sample
pretreatment,
thus
holds
substantial
potential
practical
application.
