Minerals,
Год журнала:
2023,
Номер
13(3), С. 305 - 305
Опубликована: Фев. 22, 2023
To
improve
the
ecological
environment
quality
of
industrial
cities
and
protect
health
residents,
we
determined
priority
control
factors
heavy
metal(loid)s
(HMs)
pollution
risk
in
resuspended
street
dust
(RSD)
Shijiazhuang,
an
emblematic
heavy-industrial
city
North
China,
according
to
probabilistic
assessment
method.
The
results
showed
that
HMs
studied
Shijiazhuang
RSD
exhibited
different
levels,
is,
Hg
moderate-to-severe
above;
Zn
moderate-and-above
pollution;
Co,
Cu
Pb
non-pollution
moderate
while
As,
Cr,
Mn
Ni
no
pollution.
overall
contamination
presented
moderate-to-above
levels
>94%
samples.
Mercury
considerable-to-very-high
risk.
synthetic
risks
were
considerable-to-above.
comprehensive
mainly
caused
by
Hg.
carcinogenic
local
inhabitants
their
non-carcinogenic
children
should
not
be
ignored.
Coal-related
sources
are
a
source
control.
As
We
suggest
governments
strengthen
management
coal-related
emissions.
Ecological Indicators,
Год журнала:
2022,
Номер
146, С. 109750 - 109750
Опубликована: Дек. 2, 2022
Urban
rivers
are
complex
ecosystems
that
directly
determine
the
living
environment
of
human
beings.
Monitoring
urban
river
water
quality
indexes
is
a
challenge
in
evaluation.
The
purpose
this
study
was
to
propose
multi-source
remote
sensing
inversion
method
based
on
small
number
samples
solve
problem
scale
inconsistency
among
data,
so
as
achieve
large-scale
and
efficient
quality.
Since
there
very
important
nonlinear
relationships
must
be
solved
between
simple
ground
point
data
inversion,
novel
self-optimizing
machine
learning
monitoring
proposed,
which
can
automatically
find
optimal
parameters
model
from
samples,
reduce
training
time.
Meanwhile,
order
strengthen
correlation
feature
enhancement
used
for
generating
input
data.
Moreover,
quantity
quality,
spatial
mapping
consistency
information
since
these
have
different
characteristics.
experimental
results
show
unmanned
aerial
vehicle
(UAV)
images,
R2
chlorophyll
(Chla),
turbidity
(TUB),
ammonia
nitrogen
(NH3-N)
reached
0.917,
0.877
0.846,
respectively.
Using
satellite
image,
Chla,
TUB,
NH3-N
reach
0.827,
0.679
0.779,
This
provides
new
way
realize
integration
air-space-ground
inland
future.
Environmental Challenges,
Год журнала:
2024,
Номер
14, С. 100865 - 100865
Опубликована: Янв. 1, 2024
This
paper
presents
an
analytical
risk
assessment
of
heavy
metals
(HMs)
in
twenty-three
rivers
and
two
typical
lakes
across
five
different
provinces
Nepal.
The
study
examines
their
effects
on
humans
varying
age
groups
ecological
systems
using
indexes
such
as
Hazard
Index
(HI),
Cancer
(CI),
hazard
quotient
(HQ).
human
health
reveals
that
female
children
are
the
most
vulnerable
to
metal
risks,
followed
by
male
children,
adults,
adults.
Notably,
Co,
Pb,
Cd,
As,
Cr,
Cu
present
substantially
high
non-carcinogenic
risks
for
all
adults
with
HI
values
ranging
from
1
more
than
100.
However,
this
is
confined
only
(both
female)
Mn
Ni.
HMs
Ni,
Pb
have
a
very
carcinogenic
some
(CI
>
1.00E-3).
Concerning
risk,
HQ
found
be
significantly
above
permissible
limit
order
Cu>Cd>Pb>Fe>Zn>Co>Ni>Mn.
Furthermore,
integration
various
treatment
technologies
would
enhance
effectiveness
eliminating
polluted
river
water,
ensuring
water
becomes
suitable
irrigation
other
purposes.
identified
priority
controlling
factors
potential
remediation
can
provide
valuable
insights
policymakers
making
informed
decisions
concerning
safety
system.
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.
Ecological Indicators,
Год журнала:
2023,
Номер
152, С. 110375 - 110375
Опубликована: Май 22, 2023
The
Yangtze
River
Economic
Belt
is
an
essential
ecological
security
barrier
and
demonstration
area
for
civilization
construction
in
China,
so
it
vital
to
prevent
resolve
eco-environmental
risks
its
healthy
development.
However,
the
state
of
development
this
region
has
remained
understudied.
Based
on
panel
data
from
2000
2020,
paper
analyzes
status
using
Dagum
Gini
coefficient,
kernel
density
estimation,
Moran's
I
test
model.
results
show
that:
(1)
risk
index
ranges
50.25
92.16,
which
represents
a
high
overall,
showing
obvious
characteristics
east
low
west.
(2)
overall
coefficient
decreased
0.059
0.0502
M-type
evolution
trend.
internal
difference
lower
reaches
largest,
followed
by
those
upper
middle
reaches.
average
0.0679,
while
that
0.0645,
0.0604.
contribution
rates
inside
reaches,
different
hypervariable
study
cycle
are
29.55%,
27.84%,
42.61%.
(3)
estimation
curve
shifts
with
low-risk
areas
adjacent
high-risk
areas,
especially
Zhejiang,
Jiangsu,
Anhui,
Shanghai,
where
high–low/low–high
clustering
more
significant.
Finally,
we
put
forward
some
policy
implications
provide
practical
support
sustainable
eco-environment.
