Anomalies of Rare Earth Elements and Heavy Metals in Modern Sediments of Small Lakes in the North of Karelia (Arctic): Geology and Technogenesis Influence
Abstract
Lake
sediments
are
used
as
indicators
of
the
water
body
condition
and
changes
that
have
recently
occurred
in
it
it's
catchment.
The
work
examined
two
small
lakes
Northwestern
Russia
(Arctic).
Sediment
cores
were
collected
from
center
each
separated
into
1
cm
layers.
An
ICP-mass
spectrometer
was
to
determine
chemical
composition.
It
found
both
reservoirs
containing
organic
matter
(up
61%).
In
lakes,
increased
relative
background
region
average
content
Earth's
crust
rare
earth
elements,
Th,
V,
Cr,
etc.
detected.
established
Aprelskoe
total
concentration
elements
(1916
mg/kg)
exceeds
or
is
at
one
level
with
similar
values
for
near
cities
industrial
enterprises.
analysis
geological
conditions
study
area
(Karelia,
Finland)
showed
source
anomalies
other
studied
may
be
bedrock
concentrations
Y,
Ce,
La
elements.
However,
an
geochemistry
also
a
technogenic
influence
on
lakes:
increase
Pb,
Sd,
Cd,
Ni
Cu
uppermost
layers
established.
Suspected
sources
pollution
metallurgical
plants
neighboring
effect
long-range
transport
metals
due
burning
coal
around
world.
Research Square (Research Square), Год журнала: 2024, Номер unknown
Опубликована: Сен. 2, 2024
Язык: Английский
