Applied Sciences,
Journal Year:
2022,
Volume and Issue:
12(18), P. 9345 - 9345
Published: Sept. 18, 2022
As
a
primary
sink
of
pollutants,
urban
soil
heavy
metal
pollution
and
its
influence
on
residents
ecosystems
has
been
becoming
one
the
most
important
environmental
problems.
In
present
study,
four
indices,
Geoaccumulation
index
(Igeo),
improved
Nemerow
(IMN),
degree
contamination
(mCd),
security
(CSI),
as
well
potential
ecological
risk
(RI),
were
used
to
evaluate
individual
or
integrated
for
samples
collected
from
city
parks,
vicinity
landfill,
an
industrial
area
within
Guangzhou.
The
results
indicated
that
(IMN)
calculated
was
suitable
assessment
soils
landfills
areas.
(mCd)
more
than
IMN.
Heavy
metals
Cd,
Hg,
Zn,
main
elements
in
Potential
risks
mainly
caused
by
Cd
Hg
Soil
parks
moderately
highly
even
extremely
seriously
polluted
metals.
Differing
traditional
cognition
public,
impact
landfill
similar
better
parks.
Nanoscale,
Journal Year:
2023,
Volume and Issue:
15(31), P. 12853 - 12867
Published: Jan. 1, 2023
Nanozymes,
which
can
be
defined
as
nanomaterials
with
excellent
catalytic
function,
are
well
known
to
the
scientific
community
due
their
distinct
merits,
such
low
cost
and
high
stability,
render
them
preferable
natural
enzymes.
As
porous
organic-inorganic
coordination
materials,
metal-organic
frameworks
(MOFs)
possess
a
large
number
of
active
sites
thus
effectively
mimic
properties
Recently,
MOF-based
nanozymes
have
also
exhibited
good
application
potential
for
analysis
heavy
metal
ions.
In
comparison
traditional
detection
methods
ions,
nanozyme-based
colorimetric
sensing
permits
intuitive
visual
by
using
relatively
simple
instruments,
facilitating
rapid
on-site
screening.
this
minireview,
preparation
different
nanozyme
activity
types
briefly
described,
peroxidase-like
oxidase-like,
relevant
mechanisms
elaborated.
Based
on
this,
response
turn-off,
turn-on,
turn-off-on,
discussed.
addition,
applications
ions
summarized.
Finally,
current
research
status
future
development
direction
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(5), P. 2527 - 2527
Published: Feb. 22, 2022
To
understand
the
influence
of
Pb/Zn
smelter
on
surrounding
environment,
110
soil
and
62
wheat
grain
samples
(62
paired
samples)
were
collected
nearby
a
in
Jiaozuo
City,
Henan
Province,
China.
The
content
spatial
distribution
metal(loid)s
soil-wheat
system,
potential
health
risk
via
consumption
grains
determined.
Results
showed
that
average
Pb,
Cd,
As,
Cu,
Zn,
Ni
129.16,
4.28,
17.95,
20.43,
79.36,
9.42
mg/kg,
respectively.
Cd
almost
all
(99.1%)
exceeded
national
limitation
China
(0.6
mg/kg).
Spatial
analysis
indicated
atmospheric
deposition
might
be
main
pollution
source
Zn
soil.
In
addition,
0.62,
0.35,
0.10,
3.7,
35.77,
0.15
respectively,
with
Pb
exceeding
bioaccumulation
factor
these
followed
following
order:
(0.507)
>
Cu
(0.239)
(0.134)
(0.024)
(0.007)
As
(0.006).
Health
assessment
noncarcinogenic
children
(6.78)
was
much
higher
than
adults
(2.83),
carcinogenic
is
acceptable
range,
an
value
2.43
×
10−2.
These
results
humans
who
regularly
consume
have
serious
diseases.
Metals,
Journal Year:
2022,
Volume and Issue:
12(8), P. 1330 - 1330
Published: Aug. 8, 2022
This
paper
reviews
research
on
phytoremediation
(2002–2021),
particularly
for
the
estimation
of
plant
efficiency
and
soil
pollution
indices,
examining
extraction
metals
from
plants
growing
under
both
artificial
(spiked
with
specific
metal)
natural
conditions.
From
analysis
>200
published
experimental
results,
it
was
found
that
contamination
factor
geo-accumulation
index
as
well
translocation
bioconcentration
factors
are
most
important
metrices,
respectively,
which
gaining
importance
to
assess
level
metal
its
transfer
find
a
better
clean-up
strategy
phytoremediation.
To
access
concentration,
widely
accepted
extractants
dissolve
extract
were
HNO3
HClO4
(mainly
in
5:1;
v/v
or
4:1;
v/v),
used
studies.
Moreover,
such
Pteris
vittata,
Monochoria
korsakowi,
Lolium
perenne,
Festuca
rubra,
Poa
pratensis,
Ricinus
communis,
Siegesbeckia
orientalis
can
act
hyperaccumulators
experiments
be
directly
implemented
into
fields
without
checking
their
further
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
271, P. 115968 - 115968
Published: Jan. 12, 2024
The
physicochemical
properties,
chemical
fractions
of
six
metals
(Cu,
Zn,
Pb,
Cd,
Cr,
and
Mn),
microbial
communities
soil
around
a
typical
sanitary
landfill
were
analyzed.
results
indicate
that
soils
the
from
neutral
to
weak
alkalinity.
contents
organic
matter
(OM),
total
nitrogen
(TN),
phosphorous
(TP),
activities
catalase,
cellulase,
urease
significantly
higher
in
than
those
background
soils.
Negative
correlations
found
between
pH
metals.
Cr
was
dominant
metal.
Cu,
Mn
accumulated
nearby
farmland
Cd
had
highest
percentage
exchangeable
fraction
(33.7%-51.8%)
soils,
suggesting
high
bioavailability
environment
affected
by
landfill.
existed
mostly
oxidable
fraction,
Cu
Zn
residual
fraction.
There
low
risk
based
on
RI
values,
while
according
RAC
classification,
very
environmental
risk.
MisSeq
sequencing
showed
Actinobacteria,
Proteobacteria,
Chloroflexi,
Acidobacteria
phyla
bacteria,
most
abundant
phylum
fungi
Ascomycota.
NMDS
analysis
revealed
could
influence
fungal
more
intensely
bacterial
communities.
TN,
bioavailable
(Pb-Bio
Cr-Bio)
identified
have
main
influences
Pb-Bio
driving
factor
for
community
structures.
For
fungi,
negatively
related
Olpidiomycota
Cr-Bio
negative
correlation
with
It
manifests
play
important
roles
assessing
risks
structures
Environmental Geochemistry and Health,
Journal Year:
2024,
Volume and Issue:
46(3)
Published: Feb. 23, 2024
Abstract
This
study
investigates
human
health
risks
associated
with
heavy
metals
(HMs)
occurrence
in
municipal
solid
waste
(MSW)
landfills.
For
testing
of
selected
MSW
landfills
steps
were
involved,
including
site
characterization,
soil
sampling
and
chemical
testing,
statistical
analysis,
as
well
risk
assessment,
carcinogenic
non-carcinogenic
effects.
the
Polish
landfill
(Radiowo)
average
HMs
concentrations
found
following
order:
Zn
(52.74
mg/kg
DM)
>
Pb
(28.32
Cu
(12.14
Ni
(4.50
Cd
(3.49
DM),
while
for
Czech
(Zdounky):
(32.05
(14.73
(4.73
(0.10
=
DM).
Strong
positive
correlations
between
demonstrated
identical
origins.
Principal
component
analysis
(PCA)
performed
Radiowo
transferred
parameters
into
three
principal
components
(PCs),
accounting
87.12%
total
variance.
The
results
PCA
Zdounky
revealed
PCs
responsible
95.16%
exposure
pathways
ingestion
dermal
absorption
inhalation.
both
landfills,
values
hazard
quotient
lower
than
1,
indicating
no
potential
negative
In
terms
index
(HI),
adverse
effects
occur
(HI
<
1).
incremental
lifetime
cancer
(ILCR)
indicated
negligible
or
acceptable
(average
ILCR
range
from
5.01E−10
to
5.19E−06).