Water,
Journal Year:
2023,
Volume and Issue:
15(23), P. 4095 - 4095
Published: Nov. 25, 2023
Elucidating
the
hydrogeochemical
processes
and
quality
assessment
of
groundwater
holds
significant
importance
for
its
sustainable
development.
In
this
paper,
53
samples
were
collected
from
a
typical
agricultural
area
in
northeastern
Chongqing
municipality
SW
China.
The
integration
multivariate
statistical
analysis,
ion
ratio
geomodelling
entropy
water
index,
health
risks
assessment,
sensitivity
analysis
was
carried
out
to
explore
hydrochemical
study.
results
reveal
that
cationic
concentrations
followed
order
Ca2+
>
Mg2+
Na+
K+,
while
anionic
components
HCO3−
SO42−
NO3−
Cl−.
Based
on
Piper
trilinear
diagram,
types
shown
as
Ca-HCO3
Ca-Mg-HCO3
types.
Hierarchical
cluster
indicated
could
be
categorized
into
three
groups.
compositions
primarily
influenced
by
water–rock
interactions
(e.g.,
carbonate
dissolution
silicate
weathering).
terms
irrigation
suitability,
sodium
adsorption
ratios
(SARs)
ranged
0.05
1.82,
electrical
conductivity
(EC)
varied
116
1094
μs/cm,
indicating
most
suitable
irrigation.
entropy-weighted
index
15
94,
suggesting
drinking
purposes.
Non-carcinogenic
human
children
adult
females
males,
within
average
values
0.30,
0.21,
0.18,
respectively.
Sensitivity
showed
parameters
had
weight
NO3
body
(BW)
ingestion
rate
(IR)
exposure
frequency
(EF).
Hence,
we
recommend
prioritizing
management
areas
with
high
salinity
levels,
avoiding
excessive
use
nitrogen
fertilizers,
raising
awareness
among
local
residents
about
safe
groundwater,
providing
robust
support
development
areas.
Metals,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1062 - 1062
Published: Sept. 17, 2024
Fluoride
and
nitrate
contamination
in
groundwater
is
a
global
concern
due
to
their
toxicity
associated
negative
health
effects.
This
study
incorporated
comprehensive
methodology,
including
hydrogeochemical
analysis,
drinking
irrigation
water
quality
assessment,
source
apportionment,
risk
estimation
of
fluoride
lithium
ore
deposit
basin
western
Serbia.
Groundwater
major
ion
hydrogeochemistry
was
governed
by
water–rock
interactions,
with
Ca-Mg-HCO3
identified
as
the
predominant
type.
The
entropy-weighted
index
(EWQI),
sodium
adsorption
ratio
(SAR),
percentage
(%Na)
revealed
that
95%
samples
were
excellent
good
for
both
irrigation.
Moreover,
results
showed
fluorides
geogenic
origin,
whereas
nitrates
originated
from
agricultural
activities.
Although
levels
relatively
low,
averaging
1.0
mg/L
11.1
mg/L,
respectively,
assessment
ingestion
such
can
still
lead
non-cancerous
diseases.
threshold
one
hazard
exceeded
15%
35%
adults
children,
respectively.
Children
more
vulnerable
non-carcinogenic
risk,
being
primary
contributing
factor.
outcomes
serve
reference
other
lithium-bearing
areas
guide
management
regional
resources.
Frontiers in Earth Science,
Journal Year:
2024,
Volume and Issue:
12
Published: Sept. 27, 2024
Introduction
The
groundwater
in
arid
countries
such
as
Egypt
represent
the
main
water
resources
desert
regions
due
to
long
distance
between
these
(oasis)
and
Nile
River.
Contamination
of
limited
with
toxic
metals
threaten
health
individuals
regions.
Methods
current
study
integrates
isotopic
tracers,
hydrogeochemistry,
geophysical
logs,
positive
matrix
factorization
(PMF
model),
Monte
Carlo
(MCS)
simulation
for
pollution
source
apportionment
risks
associated
heavy
Nubian
Sandstone
aquifer
(NSSA).
Results
Discussion
resource
used
drinking
purposes
(NSSA)
is
pale
meteoric
(non-rechargeable
aquifer).
Silicate
weathering,
old
trapped
sea
water,
reverse
ion
exchange
evaporation,
dissolution
are
dominant
mechanisms
controlling
chemistry.
PMF
model
showed
that
major
ions
NSSA
originated
from
four
significant
sources
(anthropogenic
activities,
minerals,
iron-bearing
mixing
seawater,
hydrothermal
water).
total
risk
(HI)
oral
values
highlighted
non-carcinogenic
dangers
adults
children
through
exposure.
At
same
time,
dermal
contact
posed
a
no
high
children.
Most
samples
had
carcinogenic
(CR)
higher
than
allowed
limits
(1.0E-4)
like
Cadmium,
chromium,
lead,
suggesting
effects
across
all
age
groups.
approach-based
concern
evaluation
assessed
5th
%
CR
(child)
0.00012,
0.0036,
0.0088
Cd,
Cr,
Pb,
respectively,
indicating
more
potential
Urgent
comprehensive
treatment
measures
imperative
mitigate
identified
area.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
Abstract
The
availability
of
uncontaminated
groundwater
is
pivotal
significance
for
the
sustainable
sustenance
human
development.
High
concentrations
heavy
metals
in
can
pose
substantial
risks
to
health.
This
study
explores
spatial
distribution
patterns,
sources
pollution,
and
health
risk
assessment
(Mn,
Ni,
U,
Zn,
V,
Cu,
Cr,
Cd
Pb)
shallow
Huainan
coal
mining
area
China.
Mn
Ni
were
found
be
relatively
high.
characteristics
analyzed
using
inverse
distance
weighting,
revealing
that
Cd,
Pb
U
was
similar,
suggesting
typical
point
source
pollution.
PMF
model
indicated
activities,
industrial
local
geogenic
processes
main
factors
affecting
quality,
with
contributions
42.76%,
440.78%
16.46%,
respectively.
results
demonstrate
non-carcinogenic
each
metal
within
safety
threshold;
however,
carcinogenic
posed
by
should
not
overlooked.
It
observed
values
children
exceed
those
adults.
Consequently,
must
undergo
specific
purification
measures
before
utilization.
findings
this
offer
a
scientific
foundation
ensuring
quality
drinking
water
plain
areas
affected
mining.
Environmental Quality Management,
Journal Year:
2025,
Volume and Issue:
34(4)
Published: March 28, 2025
ABSTRACT
This
study
investigates
groundwater
quality
in
Raebareli
district,
India,
with
a
specific
focus
on
heavy
metal
contamination
and
its
implications
for
human
health
ecological
risk.
The
part
of
the
central
Indo‐Gangetic
alluvium,
is
representative
regions
facing
significant
pollution
challenges.
Using
indices
such
as
index
(HPI)
risk
(ERI),
levels
were
assessed
through
weighted
arithmetic
methods
sub‐index
calculations.
identified
lead
(Pb)
predominant
contaminant,
affecting
93.75%
analyzed
water
samples,
59.3%
sites
classified
critically
polluted
unsuitable
drinking
or
other
purposes.
Health
assessments
revealed
that
cadmium
(Cd)
posed
highest
noncarcinogenic
carcinogenic
risks
among
detected
metals.
Hazard
quotient
analysis
indicated
children
more
vulnerable
to
chronic
risks,
particularly
from
Pb
ingestion,
which
exceeded
safe
thresholds
at
20
stations
adults
22
children.
Cd
contributed
78.2%
75%
adults.
Ecological
showed
50%
samples
low
46.8%
moderate
3.1%
considerable
risks.
Statistical
tools,
including
Pearson's
correlation,
hierarchical
cluster
(HCA),
principal
component
(PCA),
associations
between
pairs,
distinct
clustering
patterns,
sources,
both
natural
anthropogenic.
findings
emphasize
urgent
need
public
awareness
programs
rapid
mitigation
measures
safeguard
resources
health.
Prolonged
exposure
metals
linked
severe
conditions,
neurological
disorders,
kidney
damage,
cardiovascular
issues,
cancer,
highlighting
critical
sustainable
resource
management.
provides
essential
baseline
data
insights
support
informed
decision‐making
effective
strategies
addressing
groundwater.
