Toxics,
Год журнала:
2025,
Номер
13(3), С. 150 - 150
Опубликована: Фев. 23, 2025
River
sediments
serve
as
both
a
source
and
reservoir
for
potential
heavy
metal
pollutants,
providing
critical
insights
into
the
health
of
aquatic
ecosystems.
Heavy
contamination
in
global
river
systems
poses
significant
risks
to
human
through
food
chain.
This
study
investigates
contents
metals,
including
Fe,
Mn,
Cu,
Ni,
Zn,
Cr,
Pb,
Cd,
surface
sediment
samples
collected
from
mid–upper
reaches
Yellow
River,
which
flows
provinces
Qinghai,
Gansu,
Ningxia,
Inner
Mongolia,
Shaanxi,
Henan.
We
analyzed
spatial
distribution
characteristics
these
metals
assessed
their
pollution
levels
by
identifying
sources
contamination.
The
findings
reveal
elevated
concentrations
Cr
Cd
with
particularly
severe
observed
certain
urban
areas.
are
primarily
linked
activities
related
production
daily
life.
offers
valuable
guidance
local
control
prevention
strategies.
Soil and Sediment Contamination An International Journal,
Год журнала:
2024,
Номер
unknown, С. 1 - 17
Опубликована: Янв. 24, 2024
Gilgit
River
Basin
(GRB)
is
one
of
the
primary
fluvial
aquatic
systems
flowing
through
Gilgit-Baltistan
and
a
water
source
for
recreation,
fisheries,
irrigation,
drinking
to
more
than
1.8
million
people.
This
study
aimed
investigate
heavy
metals
(HM)
contamination
levels
in
sediments
GRB,
northern
Pakistan.
Fifty-five
samples
were
picked
from
various
sections
GRB
examined
HM
concentrations.
Fe
showed
maximum
average
concentration
27,743
mg/kg,
while
Cd
was
noted
with
minimum
1.06
mg/kg.
concentrations
within
world
river
system
guidelines
except
Cd,
which
also
surpassed
sediment
quality
set
by
USEPA.
used
geospatial
ecotoxicological
risk
indices.
Geospatial
analyses
higher
Ishkomen
GRB.
low
moderate
exposed
ecosystems.
Statistical
apportionment
suggesting
major
contribution
natural
activities.
recommends
seasonal
variation
studies
Ecotoxicology and Environmental Safety,
Год журнала:
2025,
Номер
289, С. 117634 - 117634
Опубликована: Янв. 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
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
30, С. 103076 - 103076
Опубликована: Фев. 22, 2023
Excessive
accumulation
of
heavy
metals
(HMs)
in
sediments
poses
significant
threats
to
the
aquatic
ecosystems.
This
study
comprehensively
determined
spatial
distribution,
sources,
and
ecological
risks
eight
HMs
85
surface
lower
reach
estuary
Yangtze
River
(YR),
third
longest
river
world.
Our
results
revealed
that
mean
concentrations
As,
Cd,
Cr,
Cu,
Hg,
Ni,
Pb,
Zn
were
11.32,
0.57,
87.31,
37.39,
0.10,
34.97,
32.27,
108.38
mg
kg
−1,
respectively.
The
contamination
assessment
Cd
Hg
significantly
higher
than
other
HMs.
had
a
variation,
with
concentration
riverine
estuarine
sediments.
source
apportionment
anthropogenic
activities
highest
contribution
occurrence
(78.53%),
including
industrial
activities,
shipping
transportation,
agricultural
production.
area
risk
because
its
dense
industrialization.
Besides,
large
diffusion
into
ocean
also
substantially
reduced
Altogether,
our
findings
provide
better
understanding
causes
sediment
HM
contamination.
Hence,
this
work
can
be
used
as
guide
help
government
efficiently
prevent
control
similar
areas.
