International Journal of Environment and Geoinformatics,
Journal Year:
2023,
Volume and Issue:
10(3), P. 139 - 153
Published: Sept. 13, 2023
Located
in
western
Anatolia
(Turkey),
Lake
Marmara
is
a
wetland
with
high
ecological
value.
Marmara,
which
was
exposed
to
intense
anthropogenic
effects
after
1940,
experiencing
deterioration
recent
years.
This
study
aimed
analyze
the
risk
level
of
lake
by
using
Enrichment
Factor
(EF),
Toxic
Risk
Index
(TRI),
Modified
Potential
Ecological
(mER)
etc.
The
research
hypothesized
that
discharge
water
from
Gediz
River
and
Kum
Stream
1940
triggered
problems.
Moderate
toxic
risk,
low
potential
moderate
element
contamination
were
detected
throughout
lake.
It
determined
Mo,
P
Hg
origin
As,
Ni,
Cr,
Cu
lithological
created
at
regional
scale.
Domestic-industrial
wastes
agriculture
basin
around
identified
as
dominant
activity.
temporal
variation
indices
based
on
elements
did
not
reflect
traces
into
basin.
However,
TOC,
N,
CDP
showed
interventions
According
threshold
values;
highly
contaminated
N
close
severely
limit.
findings,
while
confirming
hypothesis,
factor
elemental
contamination,
but
organic
pollutants,
nitrogen
phosphate.
Journal of Hazardous Materials Advances,
Journal Year:
2024,
Volume and Issue:
13, P. 100402 - 100402
Published: Jan. 9, 2024
The
contamination
of
cropland
with
heavy
metals
poses
a
significant
threat
to
human
health
and
food
security.
Black
soil,
characterized
by
high
organic
matter
content
associated
grain
yields,
is
particularly
susceptible
metal
accumulation.
Total
99
surface
soil
samples
were
gathered
from
the
Changchun
black
area
in
Jilin
Province,
order
determine
spatial
distribution,
sources,
pollution
risk
assessment
seven
toxic
elements.
average
concentrations
Cu,
Ni,
Cr
Cd
are
1.15,
1.08,
1.22
1.19
times
higher
than
respective
background
values.
variation
demonstrated
that
Cd,
As
exhibited
heterogeneity
study
area.
Through
distribution
multivariate
statistical
analysis,
elements
Pb,
Zn
Ni
mainly
derived
nature
source,
while
comes
anthropogenic
agriculture
production
industrial
transportation
being
primary
factors.
By
geo-accumulation
index
single
factor
showed
accumulation
relatively
high.
Potential
ecological
at
low
level
overall,
but
there
still
several
points
Gongzhuling
City
moderate
levels.
