PLANETARY SUSTAINABILITY,
Год журнала:
2024,
Номер
2(2)
Опубликована: Июль 31, 2024
The
study
examined
the
distribution
of
physicochemical
parameters
and
toxic
metals
in
Niger
Delta
Coast,
Nigeria.
shellfish
(T.
fuscatus),
water,
sediments,
data
were
collected
from
three
sampling
stations
over
a
six-month
period.
findings
revealed
considerable
variability
levels
heavy
features
between
stations.
Station
2
had
higher
temperature
salinity
but
lower
total
dissolved
solids,
pH,
biological
oxygen
demand,
oxygen.
1
highest
concentrations
Fe,
Zn,
Cd,
Pb,
Cu,
As
water
sediment
samples,
while
consistently
lowest
concentrations.
3
Fe
Zn
values
terms
bioaccumulation.
found
no
significant
differences
(p
>
0.05)
all
T.
fuscatus
2,
except
for
which
showed
slight
variation
<
0.05).
In
fish,
Cu
sediment,
1.
For
bioaccumulation,
greatest
concentration,
measuring
0.00000123
mg/kg,
both
Stations
shared
bioaccumulation
at
0.00000058
mg/Kg.
possibly
due
to
local
conditions
or
iron
sources.
Higher
metal
these
areas
may
lead
potential
environmental
health
implications
their
susceptibility
pollution.
suggests
that
constant
assessment
remedial
measures
are
needed
safeguard
aquatic
ecosystem
area.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
32, С. 103397 - 103397
Опубликована: Окт. 11, 2023
Water
pollution
is
a
pressing
concern
in
China
as
well
other
countries
around
the
world.
Despite
escalating
water
quality
issues
associated
with
sources
of
Xuzhou,
Jiangsu
Province,
China—namely
Weishan
and
Luoma
Lakes—a
dearth
scientific
systematic
guidance
regarding
environmental
management
remains.
This
study
investigated
potential
Lakes
through
hydrochemical
analysis,
correlation
analysis
(CA),
principal
component
(PCA),
analyses
Quality
Index
(WQI)
evaluation
index
(PEI).
Results
showed
that
average
values
some
components,
such
turbidity,
total
dissolved
solids
(TDS),
nitrogen
(TN),
hardness
(TH),
alkalinity
(ALK),
were
higher
than
standard
limits.
The
CA
results
revealed
heterogeneity
pathways
pollutants
ions.
PCA
was
used
to
identify
five
key
indicators
for
Lakes,
explaining
cumulative
variance
85.26–86.64%
83.56–85.64%,
respectively.
In
Lake,
anthropogenic
industrial
primary
contributors
pollution,
whereas
natural
source,
followed
by
agricultural
sources.
general,
WQI
PEI
indicated
Lake
classified
"good"
during
period,
despite
deterioration
both
lakes.
Overall,
implementing
robust
plan
maintaining
aquatic
environment
these
two
lake
areas
necessary.
The
Nile
River
is
the
primary
source
of
freshwater
in
Egypt.
water
quality
seven
permanent
Islands
(three
upstream
Aswan
and
four
downstream
Cairo)
was
assessed
using
a
variety
chemical,
physical,
bacteriological
variables
indices.
A
total
84
samples
were
collected
from
shores
during
winter
summer
seasons.
Standard
methods
used
to
analyze
for
various
variables,
including
nutrients,
bacteria,
heavy
metals.
significant
difference
found
most
especially
metals,
between
Cairo
Islands.
On
all
shores,
Cu,
Zn,
Co,
Cr,
Pb,
Cd
levels
exceeded
acceptable
limits
set
by
international
standards
aquatic
life
protection.
distribution
patterns
these
are
strongly
influenced
island
activities.
average
index
at
islands
ranged
79
90,
indicating
suitable
organisms.
chemical
pollution
classified
as
slightly
polluted
throughout
dry
season.
However,
metal
indices
consistently
showed
some
degree
contamination
on
Although
not
severely
polluted,
continuous
monitoring
important,
given
potential
decrease
Egypt's
share
water,
increase
contaminants,
changes
land
use
following
completion
Grand
Ethiopian
Renaissance
Dam.
