Vestnik of Saint Petersburg University Earth Sciences,
Год журнала:
2023,
Номер
68(4)
Опубликована: Янв. 1, 2023
Speciation
of
ore
and
accompanying
elements
(Cu,
Zn,
Fe,
Ni,
Pb,
Cd,
Cr,
V,
Ba,
Sr)
in
steppe
soils
the
Transurals
(vicinity
city
Sibay,
Bashkortostan)
was
studied
with
sequential
extraction
method.
Attention
given
to
change
elements’
speciation
area
affected
by
mining
(Cu-Zn
deposit).
The
results
are
supplemented
chemical
analysis
humic
acids
(isolated
alkaline
extraction)
granulometric
fractions.
It
revealed
that
background
areas
characterized
low
mobility
a
relatively
uniform
distribution
over
soil
profile.
Residual
fraction
percentage
(fraction’s
share
element’s
total
content)
is
highest.
Percentage
exchangeable
carbonate
fractions
insignificant
(Sr
Ba
exceptions).
crystalline
Fe
hydroxides,
reduceable
oxidizable
varies
from
shares
percent
15%.
Cd
stands
out
for
high
(up
30%
residual
50%).
Comparison
obtained
allows
us
suggest
near
objects
industry
dust
enriched
Cu,
Pb
Sb
comes
surface.
This
leads
shard
increase
content
upper
layer
chernic
horizon,
these
among
Increase
not
only
due
prevailing
fraction;
fraction,
reducible
hydroxides
significantly
increase.
Sharp
(largely
sulfides)
noted.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
33, С. 103474 - 103474
Опубликована: Дек. 6, 2023
The
current
situation
regarding
soil
cadmium
pollution
in
China
is
far
from
optimistic,
necessitating
the
exploration
of
more
viable
Cd
pollution-remediating
plants.
Several
studies
have
shown
that
ornamental
plants
excellent
potential
for
application
remediation.
However,
research
on
tolerance
capacity
Hydrangea
remains
scarce,
and
effects
plant
age
heavy
metal
has
not
been
thoroughly
investigated.
In
this
study,
greenhouse
pot
experiments
were
conducted
with
artificially
prepared
Cd-polluted
at
various
concentrations
(0–240
mg·kg-1).
Two
cultivars
H.macrophylla,
“Endless
Summer”
(H.'ES')
“Classic
Rood”
(H.'CR'),
cultivated
different
Cd-contaminated
levels
60
d,
after
which
growth
response,
physiological
changes,
mineral
element
absorption,
concentration
parts
measured.
effect
absorption
H.
macrophylla
was
also
explored.
results
showed
under
stress,
antioxidant
activity
penetration-regulating
substance
content
increased,
Mg,
Mn,
Zn
changed.
Under
all
treatments,
roots
higher
than
those
shoots
cultivars,
a
bioconcentration
factor
>1
translocation
<1.
to
H.'CR'
stronger
H.'ES'.
increased
seedling
age.
This
study
indicated
suitable
candidate
phytostabilization
remediation
soils
limit
harm
caused
by
flow
ecosystem.
Minerals,
Год журнала:
2023,
Номер
13(11), С. 1389 - 1389
Опубликована: Окт. 30, 2023
Heavy
metal(loid)s
(HMs)
in
soils
near
mining
sites
often
cause
serious
environmental
and
health
issues.
Accurately
assessing
soil
HM
risks
identifying
priority
pollutants
are
crucial
for
improving
risk
control
efficiency
with
limited
management
costs
resources.
Traditional
deterministic
assessments
may
yield
biased
results
due
to
the
imprecision
ambiguity
of
data
assessment
processes.
To
compensate
deficiencies
assessment,
a
comprehensive
probabilistic-fuzzy
model
was
developed
based
on
fuzzy
theory,
probability
methods,
contamination
(SCR)
index,
human
(HR)
framework.
According
this
model,
status
typical
area
China
evaluated.
The
indicated
that
Cd
Cu
significantly
violated
relevant
guidelines
were
considered
metals
(ER).
Notably,
Cd’s
hazard
predominantly
manifested
solid
potential
ecological
(PER),
whereas
Cu’s
impact
primarily
as
(SCR).
From
perspective
HR,
HMs
already
pose
considerable
threat
health,
children
facing
greater
HRs
than
adults.
As
identified
element
HRs,
carcinogenic
non-carcinogenic
reaching
unacceptable
levels.
Regarding
general
(GR),
ranked
first
gradient
second
gradient.
Overall,
accumulation
HMs—especially
Cd,
Cu,
As—in
study
has
posed
significant
ecosystem
health.
other
(Pb,
Zn,
Cr,
Ni)
relatively
low,
but
superimposed
multiple
should
not
be
ignored.
probabilistic–fuzzy
reduces
uncertainty
integrates
HMs,
providing
more
information.
can
serve
reference
managers
develop
targeted
strategies.
