Human-released
metals
are
present
to
some
extent
in
soil
and
sediment
from
even
the
remotest
areas,
including
Canadian
Arctic.
The
cumulative
impact
of
legacy
pollution,
ongoing
release
contaminants
climate
change
could
lead
important
modifications
metal
transport
transformation
processes
environment
that
can
affect
exposure
biota
humans
metals.
Large
uncertainties
remain
regarding
future
on
subarctic
landscape,
those
be
toxic
low
dose
like
mercury.
Paleoecology
is
a
powerful
tool
evaluate
changes
pollution
recovery
lakes
by
providing
long-term
records
environmental
conditions
at
relatively
cost
with
rapid
analysis.
Paleoecological
help
fill
research
gaps
current
monitoring
approaches
can't
address
because
lack
temporal
perspective.
In
this
thesis,
multiple
archives
were
analysed
compared
understand
accumulation
occurred
over
last
centuries
millennia
Canada,
Yellowknife
(Northwest
Territories)
Whitehorse
Regions
(Yukon).
Multiple
times
series
analysis
developed
individual
impacts
specific
sources
commonly
affecting
boreal
lakes.
These
include
local
point-source
emissions,
catchment
retention
contaminants,
released
wildfires.
This
thesis
provides
quantification
for
seldom
addressed
literature
so
far,
especially
environments.
Subarctic
will
continue
receiving
anthropogenic
years
regardless
emissions
retention.
Terrestrial
heavy
retained
catchments
susceptible
remobilisation
toward
aquatic
environments
natural
such
as
land
erosion
permafrost
thaw
wildfires;
these
may
enhanced
change.
Recovery
any
site
also
dependent
parameters,
explaining
necessity
characterise
ecosystem
different
types
ecosystems,
Sustainability,
Journal Year:
2021,
Volume and Issue:
13(12), P. 6555 - 6555
Published: June 8, 2021
Abandoned
mine
lands
(AMLs),
which
are
considered
some
of
the
most
dangerous
anthropogenic
activities
in
world,
a
source
hazards
relating
to
potentially
toxic
elements
(PTEs).
Traditional
reclamation
techniques,
expensive,
time-consuming
and
not
well
accepted
by
general
public,
cannot
be
used
on
large
scale.
However,
plant-based
techniques
have
gained
acceptance
as
an
environmentally
friendly
alternative
over
last
20
years.
Plants
can
AMLs
for
PTE
phytoextraction,
phytostabilization,
phytovolatilization.
We
reviewed
these
phytoremediation
paying
particular
attention
selection
appropriate
plants
each
case.
In
order
assess
suitability
purposes,
accumulation
capacity
tolerance
mechanisms
PTEs
was
described.
also
compiled
collection
interesting
actual
examples
AML
phytoremediation.
On-site
studies
shown
positive
results
terms
soil
quality
improvement,
reduced
bioavailability,
increased
biodiversity.
strategies
need
better
characterize
potential
plant
candidates
improve
extraction
reduce
negative
impact
AMLs.
Critical Reviews in Environmental Science and Technology,
Journal Year:
2021,
Volume and Issue:
52(24), P. 4331 - 4352
Published: Oct. 15, 2021
Foliar
accumulation
of
atmospheric
mercury
(Hg),
particularly
gaseous
elemental
(Hg(0)),
accounts
for
a
significant
amount
Hg
deposition
and
influences
the
geochemical
cycle.
occurs
as
net
result
uptake,
adsorption,
fixation,
re-emission,
other
processes.
The
combination
these
processes
foliar
speciation,
translocation,
toxicity,
transport,
bioavailability,
which
eventually
affects
environmental
risk
Hg.
Therefore,
systematic
understanding
various
involved
in
is
urgently
needed.
This
review
summarizes
current
knowledge,
research
progress,
remaining
knowledge
gaps
regarding
biochemical
mechanisms
involved.
Atmospheric
biochemically
fixed
within
foliage
after
stomatal
and/or
nonstomatal
with
then
volatilized
reduction,
washed
off
via
throughfall,
deposited
on
soil
surfaces
litterfall
or
stored
vegetation
over
time.
Mechanisms
underlying
future
perspectives
are
hereby
discussed
aim
reducing
accumulation.
different
methods,
such
speciation
analysis,
isotope
tracer
techniques,
element
imaging,
biological
technologies,
ecologically
microcosmic
will
help
clarify
transformation,
subcellular
distribution
foliage,
quantitate
fluxes
during
decomposition.
Measurements
modeling
process
under
natural
human
perturbations
also
essential.
These
investigations
comprehensively
understand
influencing
interactions
evaluate
fates
risks
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
271, P. 115964 - 115964
Published: Jan. 16, 2024
Corn
is
a
crucial
crop
in
China
and
widely
cultivated
the
mercury
(Hg)
mining
region
of
Guizhou.
This
study
analyzed
Hg
content
soil
corn
plant
samples
from
Wuchuan
area
(WCMA)
surrounding
non-Hg
regions
(SNMR).
The
findings
suggest
that
ongoing
ecological
rehabilitation
environmental
conservation
measures
WCMA
have
significantly
decreased
kernels.
concentration
different
parts
varied,
being
higher
roots,
tassels,
leaves
lower
kernels
stalks.
stored
growing
primarily
originates
(55.4%),
while
SNMR,
it
mainly
comes
atmosphere
(74.9%).
Despite
counted
only
about
7%
total
mass,
roots
play
role
pollution
remediation
when
used
for
remediation.
Household
residues
burning
release
58.5%
66.9%
plants
respectively,
into
atmosphere.
Our
indicate
cultivation
acts
as
reservoir
both
atmospheric
WCMA,
serves
source
Hg.
Environmental Geochemistry and Health,
Journal Year:
2023,
Volume and Issue:
45(11), P. 8523 - 8538
Published: Aug. 30, 2023
The
distribution
of
heavy
metals
in
plants
(Castanea
sativa,
Sambucus
nigra,
Verbascum
thapsus,
Popolus
spp.,
Salix
Acer
pseudoplatanus,
Robinia
pseudoacacia)
growing
soils
from
active
and
abandoned
mining
areas
is
scientific
significance
as
it
allows
to
recognize
their
ability
survive
a
hostile
environment
provide
useful
indications
for
phytoremediation
operations.
In
this
work,
the
former
Hg-mining
area
Abbadia
San
Salvatore
(Tuscany,
Central
Italy)
were
analyzed
total,
leached
Hg,
%
organic
inorganic-related
Hg.
dehydrogenase
enzyme
activity
(DHA)
was
also
measured
with
aim
evaluate
status
soil,
being
characterized
by
high
Hg
contents
(up
1068
mg
kg-1).
Eventually,
concentration
different
parts
on
these
determined.
Most
studied
dominated
inorganic
92%)
while
DHA
concentrations
<
151
µg
TPF
g-1
day-1,
suggesting
that
presence
not
significantly
affecting
enzymatic
soil
activity.
This
supported
bioaccumulation
factor
(BF),
predominantly
values
1.
nigra
thapsus
had
highest
(39.42
54.54
kg-1,
respectively).
plant
leaves
appear
be
main
pathways
uptake,
observed
other
areas,
e.g.,
Almadèn
(Spain),
indicating
particulate-Hg
Hg0
are
forms
entering
system,
latter
derived
GEM
emitted
both
edifices
hosting
roasting
furnaces
themselves.
