Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Сен. 14, 2023
Abstract
Heavy
metal
contamination
in
river
Ganga
is
one
of
the
factor
for
deterioration
its
water
quality,
also
adds
to
human
health
risks.
We
designed
our
study
achieve
a
holistic
approach
by
not
only
estimating
concentration
heavy
metals
(Lead,
Manganese,
Chromium
and
Cadmium)
at
different
sites
based
on
anthropogenic
activities
but
fishes
residing
same
that
are
collected
consumption
daily
basis.
found,
Varanasi
highly
loaded
with
(PLI
=
6.698)
Mean
was:
Pb
1.29
mg/L,
Mn
1.325
Cr
0.169
mg/L
Cd
0.161mg/L,
which
were
above
permissible
limits
stated
Environment
Protection
Agency
(EPA)
drinking
water.
Fishes
including
exotic
invasive
species
from
wild
processed
presence
these
their
living
tissues.
Degree
followed
liver
>
gills
muscles.
Highest
accumulation
was
observed
Carpio
(
Cyprinus
carpio)
(8.86
µg/g)
lowest
Baikari
(Clupisoma
garua)
muscles
(0.07
µg/g).
Total
Target
Hazard
Quotient
(THQ)
value
i.e.
hazard
index
(HI)
showed
values
following
sequence:
C.carpio
O.
nilotus
C.punctatus
J.coitor
M.armatus
M.tengara
.
Maximum
HI
recorded
,
consumed
fish
human,
hence
may
be
harmful
them.
Marine Pollution Bulletin,
Год журнала:
2023,
Номер
194, С. 115337 - 115337
Опубликована: Июль 27, 2023
Functioning
of
coastal
wetland
habitats
is
essential
for
the
ecosystem
integrity
and
sustainability
development
that
enables
human
progress
along
transitional
waterways.
However,
these
are
continuously
being
affected
by
a
variety
pollutants
including
metallic
elements.
In
this
study,
seasonal
variation,
pollution
status
ecological
risks
heavy
metals
(Cr,
Mn,
Co,
Ni,
As,
Cu,
Zn
Pb)
in
surface
sediment
several
types
wetlands
(estuaries,
mudflats,
sandy
beaches,
mangroves,
saltmarshes)
were
detected
using
X-ray
fluorescence
(EDXRF)
spectrometry.
The
results
showed
mean
concentration
level
surficial
samples
followed
order
Cu
(84.06
±
8.60
μg/g)
>
(51.00
8.97
Mn
(38.25
11.34
Cr
(3.52
0.91
Pb
(0.27
0.13
Co
(0.24
As
(0.21
0.12
Ni
(0.16
0.08
μg/g).
comparison
to
pre-monsoon
period,
post-monsoon
season
had
higher
concentrations
while
overall
accumulation
exhibited
pattern
estuarine
(28.47
31.35
mangrove
(22.23
30.79
mudflat
(21.79
29.71
beach
(21.47
28.15
saltmarsh
(21.28
30.02
Although,
assessment
indices
e.g.,
contamination
factor
(CF),
degree
(CD),
geoaccumulation
index
(Igeo)
load
(PLI)
minimal
levels
studied
sites,
enrichment
(EF)
suggested
greater
but
with
lowest
risk
(RI
<
40)
both
seasons.
Cluster
analysis,
principal
component
analysis
(PCA),
Pearson's
correlation
performed
determine
sources
collected
which
specified
Pb,
predominantly
came
from
natural
whereas
emerged
anthropogenic
such
as
industrial
effluents,
domestic
wastewater,
fertilizer
or
pesticide
consumption
on
farmland
riverbank,
vessel
emissions,
confluence
tributary
rivers.
Journal of Hazardous Materials Advances,
Год журнала:
2024,
Номер
14, С. 100434 - 100434
Опубликована: Май 1, 2024
The
major
issue
associated
with
coal
mine
drainage
is
its
contribution
to
river
pollution,
which
occurs
at
the
local,
regional,
and
global
levels.
pollution
of
surface
sediment
by
heavy
metals
a
environmental
health
concern
in
mining
downstream
areas.
This
study
explored
concentrations
eight
metal
components
sediments
from
Shari-Goyain
River
Bangladesh.
trend
decreasing
concentration
was
identified
as
Fe
>
Mn
Ni
Zn
Cu
Cr
Pb
Cd
sediment.
level
area
assessed
using
various
indicators
like
geo-accumulation
index
(Igeo),
load
(PLI),
contamination
factor
(CF),
potential
ecological
risk
factor,
(RI).
exhibited
PLI
values
ranging
0.133
0.543,
suggesting
low
evaluated
(PLI
<
1).
mean
Igeo
showed
that
unpolluted
whereas
moderately
polluted
status.
For
most
metals,
samples
recorded
degree
(CF
1)
except
Pb,
Cd,
moderate
(1
≤
CF
3).
Through
application
statistical
analyses,
has
been
possible
source
analyzed
River.
However,
RI
suggested
studied
To
improve
conditions
River,
it
crucial
construct
permanent
quality
monitoring
stations
conduct
extensive
investigations.
PLoS ONE,
Год журнала:
2025,
Номер
20(2), С. e0318579 - e0318579
Опубликована: Фев. 13, 2025
The
Yihe
River
is
the
largest
mountain
torrent
river
in
Shandong
Province,
which
plays
an
important
role
flood
control,
irrigation
and
climate
regulation.
Due
to
impacts
of
upstream
urban
domestic
sewage,
as
well
industrial
agricultural
wastewater,
Linyi
City
section
expected
have
a
high
risk
metal
pollution.
Sediments
are
main
reservoir
potential
release
source
metals
(metalloid)
systems.
Assessment
sediments
can
identify
anthropogenic
In
this
study,
25
sediment
samples
were
collected
from
its
tributaries,
concentration
As,
Cd,
Cr,
Cu,
Ni,
Pb
Zn
quantified
by
inductively
coupled
plasma
mass
spectrometry
(ICP-MS),
Hg
was
determined
atomic
fluorescence
(AFS).
pollution
levels
evaluated
determining
contamination
factor,
load
index,
geoaccumulation
ecological
assessment
toxicity
index.
Correlation
analysis
absolute
principal
component-multiple
linear
regression
(APCS-MLR)
used
conduct
apportionment.
Pb,
Zn,
detected
all
samples.
Overall,
stream
mostly
within
environmental
background
value,
overall
state
no
slightly
polluted,
while
tributaries
polluted
state.
Cd
two
pollutants
surface
study
area,
with
average
content
1.65
1.11
times
respectively.
Most
areas
free
pollution,
low
risk.
risks
(Suhe
River,
Benghe
Liuqinghe
River)
center
island
(Yihe
North
Island)
assessed
presenting
toxicity.
Source
showed
that
As
mainly
come
natural
sources
activities,
result
transportation
industry.
results
help
us
understand
distribution
sediments,
also
provide
management
support
local
departments
relevant
national
departments.
Journal of Marine Science and Engineering,
Год журнала:
2024,
Номер
12(7), С. 1131 - 1131
Опубликована: Июль 5, 2024
The
global
concern
over
trace
and
heavy
metal
contamination
in
aquatic
environments
necessitates
the
development
of
effective
remediation
strategies.
Using
plants
for
removal
is
a
relatively
economical
sustainable
technology
worldwide.
This
study
involved
collecting
sediment
plant
samples
(Acanthus
ilicifolius,
Typha
elephantina,
Cynodon
dactylon)
from
highly
urbanized
estuary
to
analyze
concentrations
sediment,
assess
ecological
risks,
explore
phytoremediation
potential.
Trace
metals
were
detected
using
Energy
Dispersive
X-ray
Fluorescence
Spectroscopy
(EDXRF).
found
decreasing
order
Fe,
Ti,
Mn,
Rb,
Zr,
Zn,
Sr,
Cu,
Co,
As.
As
below
certified
values,
whereas
Rb
exceeded
them.
Cumulatively,
pollution
load
index
(PLI)
values
close
1
(0.845),
indicating
that
area
likely
experiencing
pollution.
Contamination
Factor
(CF)
ranging
3,
indicated
moderate
degree
Rb.
Enrichment
(EF)
similarly
showed
enrichment
these
metals,
with
Cu
exhibiting
highest
enrichment.
Ecological
risk
assessment
highlighted
only
metal,
as
posing
greatest
among
studied
metals.
In
terms
potential,
bioconcentration
factor
(BCF)
followed
C.
dactylon
>
A.
ilicifolius
T.
elephantina
most
low
BCF
(<1)
accumulator
However,
translocation
(TF)
Zn
(1.464)
(1.299)
species
greater
than
1,
accumulation
potential
but
hyper-metabolizing
capabilities,
allowing
accumulate
its
aerial
parts,
making
it
phytostabilization.
