Advances in Environmental and Engineering Research,
Год журнала:
2023,
Номер
04(04), С. 1 - 26
Опубликована: Ноя. 23, 2023
This
paper
reviews
the
arsenic
in
environment.
Arsenic
contamination
is
currently
one
of
leading
environmental
problems
worldwide.
The
(As)
cycle
subject
this
article
because
As
an
element
with
a
significant
impact
on
living
beings
and
its
interrelation
other
biogeochemical
cycles.
closed,
so
trace
returns
to
sediments
where
it
can
be
changed
chemical
state
by
micro-organisms
present
soils.
In
addition,
some
minerals
contribute
sequestration
retention
As.
interferes
critical
cycles
such
as
sulfur,
phosphorus,
iron,
manganese,
antimony.
Another
factor
consider
determining
content
interference
organic
matter
soil,
forms
very
stable
compounds
On
hand,
aquatic
conditions,
high
concentration
anaerobiosis,
reducing
environment
created
that
facilitates
mobilization
sediments.
Environmental Science & Technology,
Год журнала:
2022,
Номер
57(1), С. 222 - 230
Опубликована: Дек. 19, 2022
Historical
industrial
activities
have
resulted
in
soil
contamination
at
sites
globally.
Many
of
these
are
located
along
coastlines,
making
them
vulnerable
to
hydrologic
and
biogeochemical
alterations
due
climate
change
sea-level
rise.
However,
the
impact
dynamics
on
contaminant
mobility
tidal
environments
has
not
been
well
studied.
Here,
we
collected
data
from
pressure
transducers
wells,
multi-level
redox
sensors,
porewater
samplers
an
As-contaminated
site
adjacent
a
freshwater
channel.
Results
indicate
that
sharp
gradients
exist
conditions
vary
seasonal
timescales
sub-daily
water
level
fluctuations
channel
groundwater–surface
interactions.
The
As
Fe2+
concentrations
decreased
during
periods
net
discharge
changes
were
greater
than
variations
both
Eh
concentrations,
indicating
impacts
mechanism
stronger
those
table
fluctuations.
A
conceptual
model
describing
hydro-biogeochemical
coupling
is
presented.
These
findings
broad
implications
for
understanding
rise
natural
anthropogenic
coastal
solutes.
Water,
Год журнала:
2024,
Номер
16(12), С. 1692 - 1692
Опубликована: Июнь 13, 2024
Systematic
and
scientific
assessments
on
heavy
metal
pollution
are
greatly
important
to
protecting
the
coastal
eco-environment.
In
this
paper,
spatial
distribution,
degree,
ecological
toxicity
possible
sources
of
eight
elements
collected
from
126
marine
715
terrestrial
surface
sediments
surrounding
Dingzi
Bay
were
analyzed
by
obtaining
concentration
measurements.
The
results
revealed
that
concentrations
metals
followed
a
pattern:
inner
bay
>
areas
outer
bay.
Cr,
Ni,
Cu,
Zn,
Cd,
Pb,
Hg
found
accumulate
in
fine
particles
(<0.063
mm),
while
As
showed
an
association
with
specific
(>0.25
mm
<0.016
mm).
Spatial
patterns
varied
non-polluted
low
levels
overall,
localized
contamination
individual
elements.
addition
natural
sources,
four
types
anthropogenic
identified
settings.
Agricultural
pollution,
characterized
predominance,
exerted
profound
effects
both
environments.
Industrial
featuring
dominance,
was
widespread
land
environment
predominantly
linked
atmospheric
deposition.
Traffic
marked
elevated
Pb
concentrated
around
factories
densely
populated
areas.
Maritime
comprising
Hg,
primarily
occurred
nearshore
outside
findings
study
provide
data
authorities
charge
sustainable
zone
management
South
Yellow
Sea.
