Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(2), P. 904 - 904
Published: Jan. 20, 2024
This
comprehensive
study
aimed
to
evaluate
the
water
quality
and
sediment
contamination
in
Chuhe
River
Nanjing.
The
spatial
assessment
of
10
samples
collected
September
highlighted
that,
surface
water,
Copper
(Cu)
>
Nickel
(Ni)
Zinc
(Zn)
Chromium
(Cr)
Lead
(Pb)
Arsenic
(As)
Cadmium
(Cd)
Mercury
(Hg),
whereas
sediments,
Zn
Cr
Cu
Pb
Ni
As
Cd
Hg.
coefficient
variation
(CV)
for
was
>15,
As,
Cu,
Pb,
had
a
CV
that
higher
than
15
indicating
variability
sources.
Pollution
Load
Index
values
ranged
between
2.16
3.05,
reflecting
varying
levels
across
samples.
Geoaccumulation
data
also
showed
moderate-to-considerable
contamination,
especially
elements
such
as
Cu.
Correlation
analyses
sediments
unearthed
significant
relationships,
with
notable
links
strong
correlations
sediments.
In
Total
Nitrogen
Phosphorus
were
significantly
correlated
Ni.
Potential
Ecological
Response
indicated
they
are
at
medium
high
risk
(307.47
±
33.17)
could
be
potentially
detrimental
aquatic
life
tributary.
tributary,
influenced
by
agricultural
runoff,
residential
areas,
other
anthropogenic
activities,
despite
Nemerow
pollution
index
being
below
1,
analysis
areas
concern.
Principal
Component
Analysis
(PCA)
conducted
identify
potential
sources
heavy
metal
contamination.
shared
negative
loadings
on
PC
1
(60.11%)
unified
influence,
likely
from
while
2
(14.26%)
revealed
additional
complexities.
Sediments
exhibited
unique
signature
(67.05%),
associated
cumulative
impacts,
(18.08%)
providing
insights
into
nuanced
factors,
composition
dynamic
interactions.
These
findings
offer
complete
insight
tributary’s
condition,
underlining
urgency
ongoing
monitoring
remediation
measures.
Chemistry and Ecology,
Journal Year:
2024,
Volume and Issue:
40(3), P. 322 - 349
Published: Jan. 22, 2024
Heavy
metals,
pervasive
in
the
environment
due
to
natural
processes
and
human
activities,
pose
substantial
threats
ecosystems
health.
This
study
aims
delve
into
sources,
contamination
pathways
waters,
subsequent
bioaccumulation
of
heavy
metals
across
various
organisms.
The
overview
encompasses
an
exploration
environmental
persistence,
dynamics,
ecotoxicological
impacts
these
metals.
Methodologically,
this
research
undertakes
a
comprehensive
review
synthesizing
existing
literature
studies
on
metal
contamination,
mechanisms,
ecotoxicity.
Key
findings
highlight
protracted
persistence
perpetuating
significant
ecological
balance
well-being.
Notably,
transfer
through
food
chains
culminates
their
diverse
organisms,
raising
concerns
about
potential
toxicity,
including
exposure.
discussion
underscores
imperative
nature
assessing
pollution
its
ramifications
Emphasizing
essential
role
bioindicators
biomarkers,
article
elucidates
significance
evaluating
metal-induced
stressors
impact
both
biota
populations.
contributes
nuanced
understanding
advocating
for
proactive
measures
monitoring
mitigating
deleterious
effects
Environmental Science and Ecotechnology,
Journal Year:
2024,
Volume and Issue:
21, P. 100427 - 100427
Published: April 25, 2024
Plastic
waste
discarded
into
aquatic
environments
gradually
degrades
smaller
fragments,
known
as
microplastics
(MPs),
which
range
in
size
from
0.05
to
5
mm.
The
ubiquity
of
MPs
poses
a
significant
threat
ecosystems
and,
by
extension,
human
health,
these
particles
are
ingested
various
marine
organisms
including
zooplankton,
crustaceans,
and
fish,
eventually
entering
the
food
chain.
This
contamination
threatens
entire
ecological
balance,
encompassing
safety
health
systems.
Consequently,
developing
effective
MP
removal
technologies
has
emerged
critical
area
research.
Here,
we
summarize
mechanisms
recently
reported
strategies
for
removing
ecosystems.
Strategies
combining
physical
chemical
pretreatments
with
microbial
degradation
have
shown
promise
decomposing
MPs.
Microorganisms
such
bacteria,
fungi,
algae,
specific
enzymes
being
leveraged
remediation
efforts.
Recent
advancements
focused
on
innovative
methods
membrane
bioreactors,
synthetic
biology,
organosilane-based
techniques,
biofilm-mediated
remediation,
nanomaterial-enabled
strategies,
nano-enabled
demonstrating
substantial
potential
enhance
efficiency.
review
aims
stimulate
further
innovation
methods,
promoting
environmental
social
well-being.
Journal of Molecular Liquids,
Journal Year:
2024,
Volume and Issue:
410, P. 125592 - 125592
Published: July 20, 2024
Heavy
metals
pose
a
significant
threat
to
ecosystems
and
human
health
because
of
their
toxic
properties
ability
bioaccumulate
in
living
organisms.
Traditional
removal
methods
often
fall
short
terms
cost,
energy
efficiency,
minimizing
secondary
pollutant
generation,
especially
complex
environmental
settings.
In
contrast,
molecular
simulation
offer
promising
solution
by
providing
in-depth
insights
into
atomic
interactions
between
heavy
potential
adsorbents.
This
review
highlights
the
for
removing
types
pollutants
science,
specifically
metals.
These
powerful
tool
predicting
designing
materials
processes
remediation.
We
focus
on
specific
like
lead,
Cadmium,
mercury,
utilizing
cutting-edge
techniques
such
as
Molecular
Dynamics
(MD),
Monte
Carlo
(MC)
simulations,
Quantum
Chemical
Calculations
(QCC),
Artificial
Intelligence
(AI).
By
leveraging
these
methods,
we
aim
develop
highly
efficient
selective
unravelling
underlying
mechanisms,
pave
way
developing
more
technologies.
comprehensive
addresses
critical
gap
scientific
literature,
valuable
researchers
protection
health.
modelling
hold
promise
revolutionizing
prediction
metals,
ultimately
contributing
sustainable
solutions
cleaner
healthier
future.
Materials Chemistry and Physics,
Journal Year:
2024,
Volume and Issue:
318, P. 129253 - 129253
Published: March 26, 2024
Mesoporous
silica
nanoparticles,
functionalized
by
APTES,
were
used
to
modify
glassy
carbon
electrodes
(GCE)
and
their
performance
was
assessed
for
the
accurate
quantification
of
trace
Pb2+
ions
under
electrochemical
methods.
(3-aminopropyl)
triethoxysilane
modified-silica
particles
(SiO2-APTES),
about
200
nm,
synthesized
modified
Stӧber
method
in
presence
cetyltrimethylammonium
bromide.
Silica
characterized
X-Ray
diffraction
analysis,
scanning
electron
microscopy,
infrared
spectrum
techniques
such
as
cyclic
voltammetry
impedance
spectroscopy
(EIS).
Furthermore,
mesoporous
characteristics
investigated
analysis
N2
adsorption/desorption
isotherms.
The
functional
groups
on
particle
surface
showed
remarkable
selectivity
towards
Pb2+.
Various
experimental
parameters,
including
incubation
time,
pH
buffered
solution,
quantity
SiO2-APTES
deposited
electrode
systematically
identify
optimal
operating
conditions
system.
After
optimization,
sensors
covered
a
working
dynamic
range
from
8.8
×
10−8
M
1.2
10−6
achieving
noteworthy
limit
detection
2.6
M.
Interference
studies
have
demonstrated
that
GCE/SiO2-APTES
exhibit
high
sensitivity
specificity
detection,
making
them
promising
tool
rapid
portable
this
heavy
metal.
Finally,
feasibility
these
evaluated
real
samples
seawater
(obtained
Monastir,
Tunisia)
tap
water
using
standard
addition
method.
accuracy
reliability
GCE
excellent
recovery
studies,
which
ranged
88
104%
all
spiked
samples.
overall
finding
supports
practical
applicability
sensor
real-world
context
confirms
its
potential
environmental
monitoring.