Почвоведение,
Journal Year:
2024,
Volume and Issue:
3, P. 470 - 481
Published: Sept. 18, 2024
In
laboratory
model
experiments,
the
ecotoxicity
of
Tl
was
assessed
by
changing
microbiological,
biochemical
and
phytotoxic
properties
soils
in
South
Russia:
ordinary
chernozem
(Haplic
Chernozem
(Loamic)),
seropesks
(Eutric
Arenosol)
brown
forest
slightly
unsaturated
soil
Cambisol),
differing
granulometric
composition,
pH
organic
matter
content.
As
a
rule,
there
direct
relationship
between
concentration
degree
deterioration
studied
properties.
nitrate
showed
higher
than
oxide.
The
strongest
ecotoxic
effect
manifested
on
10
days
after
contamination,
—
30
later.
Restoration
biological
observed
for
90
days.
Ordinary
greatest
resistance
to
seropeski
least.
results
obtained
indicate
high
Tl.
Toxics,
Journal Year:
2024,
Volume and Issue:
12(10), P. 713 - 713
Published: Sept. 30, 2024
For
many
decades,
natural
and
modified
clay
minerals
have
been
used
as
adsorbents
to
clean
up
aquatic
soil
ecosystems
contaminated
with
organic
inorganic
pollutants.
In
this
study,
organoclays
based
on
bentonite
various
amphoteric
nonionic
surfactants
were
synthesized
tested
effective
sorbents
for
lead
ions.
The
maximum
values
of
R
obtained
when
describing
the
sorption
processes
using
Langmuir
model,
which
ranged
from
0.97
0.99.
adsorption
ions
by
these
was
investigated
different
models
including
Langmuir,
Freundlich,
BET.
It
found
that,
according
limiting
equation,
formed
an
increasing
series:
organoclay
cocamide
diethanolamine
<
lauramine
oxide
sodium
cocoiminodipropionate
disodium
cocoamphodiacetate
alkyl
polyglucoside.
Gibbs
energy
all
analyzed
samples
calculated
be
negative,
indicating
spontaneity
cation
process
in
forward
direction.
value
capacity
cations
organoclay-based
polyglucoside
1.49
±
0.05
mmol/g
0.523
0.003
determined
BET
model.
modifying
bentonite,
there
increase
negative
zeta
potential
compared
initial
mineral,
clearly
enhanced
their
electrostatic
interactions
positively
charged
hypothesized,
physicochemical
principles,
that
exchange
is
main
mechanism
absorption.
Based
chemical
approaches,
absorb
mainly
through
mechanisms
attraction,
ion
exchange,
complexation
well
formation
insoluble
precipitates.
Organoclays
surfactants,
other
hand,
(including
chelation)
comparison
isotherms
allows
us
find
most
accurate
match
between
model
experimental
data,
better
understand
nature
involved.
Agriculture and Natural Resources,
Journal Year:
2022,
Volume and Issue:
56(2)
Published: Jan. 1, 2022
Importance
of
the
work:
Bismuth
(Bi)
compounds
are
now
used
increasingly
in
various
industries
as
an
alternative
to
toxic
lead.Objective:
To
study
effect
bismuth
contamination
on
soil
biological
properties.Materials
&
Methods:
Three
Southern
Russian
types,
namely
Haplic
Chernozem
Calcic,
Arenosols
Eutric
and
Cambisols
Eutric,
having
significantly
different
resilience
ability
Bi
were
studied.Bismuth
these
soils
was
simulated
laboratory
by
addition
conditional
permissible
concentrations
nitrate
1,
10
100,
equivalent
3
mg/kg,
30
mg/kg
300
respectively.Changes
parameters
evaluated
at
d,
d
90
after
contamination.Results:
The
bismuth-contaminated
generally
lost
their
properties.The
degree
recovery
properties
depended
concentration
duration
exposure
Bi.The
identified
contamination,
with
peak
recorded
day
30.However,
Calcic
began
be
restored
up
until
90.The
order
for
tested
was:
>
Eutric.Main
finding:
suggested
regional
maximum
can
assessment
not
only
Russia
but
also
similar
worldwide
as:
8.5
2.2
1.8
soils.
Life,
Journal Year:
2023,
Volume and Issue:
13(7), P. 1592 - 1592
Published: July 20, 2023
Soil
health
is
the
basis
of
ecological
and
food
security
for
humanity.
Among
informative
indicators
soil
are
microbiological
based
on
intensity
carbon
dioxide
release
from
soil.
The
reaction
microbial
community
Haplic
Chernozem
Loamic,
Arenosols
Eutric,
Cambisols
Eutric
to
contamination
with
oxides
nitrates
Ag,
Bi,
Tl,
Te
at
doses
0.5,
1,
3,
10,
30
derived
specific
permissible
concentrations
(SPC)
was
analyzed
in
conditions
a
vegetation
experiment
(the
exposure
period
10
days).
One
concentration
assumed
be
equal
three
background
element
content
biomass
varied
between
experimental
options
6
218
mg/kg
soil;
Arenosols,
3
349
Cambisols,
7
294
Microbial
more
sensitive
indicator
by
studied
pollutants
than
basal
respiration.
A
decrease
respiration
found
when
were
contaminated
Te,
Tl
oxides.
had
significant
toxic
effect
each
type
At
maximum
dose
nitrate,
56-96%
relative
control
an
increase
metabolic
coefficient
4-6
times
found.
toxicity
series
heavy
metals
averaged
all
types
soils
terms
activity
established:
Bi
>
Ag
(oxides)
(nitrates).
Nitrates
elements
due
dependent
particle
size
distribution,
organic
matter
content,
structure.
sensitivity
changes
pollutants:
Chernozems
Cambisols.
When
diagnosing
assessing
it
advisable
use
activity.
Agriculture,
Journal Year:
2023,
Volume and Issue:
13(3), P. 719 - 719
Published: March 21, 2023
The
effect
of
bacterial
strains
on
certain
genera,
both
independently
and
in
combination
with
biochar
various
options,
petroleum
hydrocarbon
decomposition
chernozem
the
restoration
ecological
state
soil
were
studied.
To
simulate
contamination,
hydrocarbons
introduced
into
amount
5%
weight.
Strains
Bacillus
Paenibacillus
bacteria
(in
recommended
increased
doses
×
100)
(1%
weight)
contaminated
separately
together.
It
was
found
that
after
30
days,
oil
content
decreased
joint
introduction
an
dose
Bacillus,
Panibacillus
by
64%,
as
well
inoculation
at
67%.
biochar,
inoculated
BP
100,
contributed
to
increase
intensity
CO2
emission
compared
background
5–10%.
With
+
B,
stimulation
70%,
concentration
100–115%.
preparation
100
stimulated
activity
enzyme
49
61%;
preinoculation
27%
relative
value.
most
informative
biological
indicators
when
introducing
ameliorants
total
number
bacteria,
length
barley
roots
catalase
activity,
demonstrating
greatest
sensitivity.
results
study
should
be
used
for
remediation
biomonitoring
oil-contaminated
soils.
Hygiene and Sanitation,
Journal Year:
2024,
Volume and Issue:
103(1), P. 22 - 30
Published: Jan. 31, 2024
Introduction.
Тhe
municipal
solid
waste
of
pollution
negatively
affects
on
the
state
environment,
since
during
their
storage
territory
landfills
and
adjacent
territory,
accumulation
heavy
metals
(HM)
can
change
biological
indicators
soil
conditions:
microbiological,
biochemical,
phytotoxic.
The
aim
study
was
to
assess
influence
toxic
effect
landfill
“Azov”
in
Rostov
region
ecological
soil.
Materials
methods.
It
explored
condition
ordinary
chernozem
(140,
260,
380,
540
m).
content
soil,
such
as
chromium
(Cr),
strontium
(Sr),
zinc
(Zn),
vanadium
(V),
copper
(Cu),
nickel
(Ni),
cobalt
(Co),
lead
(Pb),
arsenic
(As)
were
defined.
is
assessed
by
sensitive
informative-biological
pollution:
abundance
bacteria
genus
Azotobacter,
total
prevalence
bacteria,
activity
catalase,
dehydrogenases.
Results.
Soils
found
contaminate
with
MAC
/
TAC
(exceeding
7
times
at
exceeding
4
6
territory).
Pollution
according
German
MACs
exceeded
1.4
times).
highest
concentration
prevailed
body
landfill.
Depending
distance
from
decreased.
HM
contamination
leads
negative
consequences
for
chernozem:
number
decreases
(until
95%
control),
Azotobacter
(up
catalase
25%
control)
dehydrogenase
30%
increased
phytotoxicity
60%
control).
be
concluded
that
exploitation
a
deterioration
environmental
situation
beyond.
Limitations.
ecotoxic
HMs
soils
less
buffered
will
higher
than
chernozems
studied
article.
Conclusion.
Landfill
impact
phytotoxic
parameters
negatively.
This
problem
connects
which
get
into
operation
most
informative
are
length
radish
roots.
Agronomy,
Journal Year:
2022,
Volume and Issue:
12(9), P. 2183 - 2183
Published: Sept. 14, 2022
Sustainable
agriculture
is
only
possible
if
the
agroecological
services
of
soil
are
preserved.
Soil
contamination
with
rare
elements
such
as
silver
(Ag),
bismuth
(Bi),
tellurium
(Te),
and
thallium
(Tl)
less
studied,
but
their
toxicity
no
high
than
in
other
heavy
metals.
Activity
enzymes
great
importance
for
healthy
functioning
soils,
agroecosystem
services,
fertility.
It
necessary
to
assess
ecological
state
black
using
most
sensitive
informative
indicators
soils—their
enzymatic
activity.
The
objective
this
research
was
evaluate
changes
activity
five
priority
(catalase,
dehydrogenases,
invertase,
phosphatase,
urease)
when
contaminated
oxides
nitrates
Ag,
Bi,
Te,
Tl
a
laboratory
model
experiment.
integral
assessed
by
integrated
index
A
comparison
each
element,
according
activity,
allowed
us
establish
that
Ag
oxide
more
toxic
nitrate;
Bi
equivalent
its
Te
nitrates.
When
oxides,
invertase
urease
(Bi,
Tl),
phosphatase
(Te).
nitrates,
(Ag)
Tl,
Te).
catalase
least
sensitive.
Applied Sciences,
Journal Year:
2022,
Volume and Issue:
12(24), P. 12854 - 12854
Published: Dec. 14, 2022
Soil
contamination
with
such
rare
heavy
metals
as
silver
(Ag),
bismuth
(Bi),
tellurium
(Te),
and
thallium
(Tl)
leads
to
disruption
of
its
agricultural
ecological
functions.
Each
these
has
a
different
level
soil
toxicity,
which
affects
the
state
recovery
degree
estimated
by
biological
indicators.
The
work
objective
is
assess
ecotoxicity
oxides
nitrates
silver,
bismuth,
tellurium,
indicators
Haplic
Chernozem.
Under
conditions
laboratory
simulation
experiment,
were
introduced
into
samples
soil.
for
each
incubation
period
was
assessed
activity
enzymes
(catalase
dehydrogenases),
intensity
seed
development
in
polluted
(the
length
shoots
roots
winter
wheat),
microbiological
total
number
bacteria
Azotobacter
sp.
abundance).
For
90
days,
when
contaminated
thallium,
most
sensitive
indicator
wheat
roots;
nitrates,
indicator.
informative
both
chemical
forms
elements
(silver,
thallium)
abundance.
ecotoxic
among
those
studied
form
nitrates.
results
study
may
be
useful
biomonitoring
diagnostics
soils
thallium.
