Environment International,
Год журнала:
2024,
Номер
188, С. 108782 - 108782
Опубликована: Май 28, 2024
Snow
dumping
stations
can
be
a
hotspots
for
pollutants
to
water
resources.
However,
little
is
known
about
the
amount
of
microplastics
including
tyre
wear
particles
transported
this
way.
This
study
investigated
and
metals
in
snow
from
four
Riga,
Latvia,
remote
site
(Gauja
National
Park),
roof
top
Riga.
Microplastics
other
than
were
identified
with
Attenuated
Total
Reflection
Fourier
Transform
Infrared
(ATR-FTIR)
(>500
µm)
focal
plane
array
based
micro-Fourier
(FPA-µFTIR)
imaging
(10–500
µm),
by
Pyrolysis
Gas
Chromatography-Mass
Spectroscopy
(Py-GC–MS),
total
Inductively
Coupled
Plasma
Optical
Emission
(ICP-OES).
detected
FTIR
quantified
particle
counts
their
mass
estimated,
while
mass.
The
concentrations
varied
substantially,
highest
levels
urban
areas.
Microplastic
measured
ranged
between
26
2549
L−1
melted
corresponding
estimated
19–573
µg/L.
Tyre
not
at
two
reference
sites,
sites
held
44–3026
Metal
several
orders
magnitude
example
sodium
range
0.45–819.54
mg/L
cadmium
0.05–0.94
Correlating
microplastic
metal
content
showed
weak
moderate
correlation.
particles,
however,
correlated
strongly
many
metals.
that
hold
considerable
amounts
these
pollutants,
which
upon
melting
release
meltwater
aquatic
environment
could
impact
receiving
waters.
The Science of The Total Environment,
Год журнала:
2024,
Номер
926, С. 171694 - 171694
Опубликована: Март 13, 2024
To
gain
better
understanding
of
how
the
transition
to
electric
vehicles
affects
road
dust
(RD)
composition,
and
potential
health
environmental
risks,
it
is
crucial
analyze
chemical
composition
RD
identify
its
sources.
Sources
include
wear
tire
tread
(TT),
brake
(BW)
(RW).
A
relevant
component
are
particles
(TRWPs).
This
literature
review
compiles
data
on
bulk
sources,
in
Asia,
Europe
North
America
TRWP
as
a
component.
The
focus
elements
such
Cd,
Co,
Cr,
Cu,
Ni,
Pb,
V,
Zn.
Although
comparability
global
limited
due
differences
sampling
analytical
methods,
no
significant
from
Europe,
were
found
for
most
investigated
studied,
except
V.
Source
analyzed
using
elemental
markers.
On
average
TT,
BW,
RW
contributed
3
%,
1
96
respectively.
highest
concentrations
TT
(9
%)
BW
(2
observed
particle
size
fraction
≤
10
μm.
It
recommended
that
these
results
be
verified
additional
marker
compounds.
TRWPs
different
sources
revealed
(i)
isolated
tunnel
sample
composed
31
%
6
62
RW,
(ii)
test
material
stands
show
similar
content
but
likely
because
e.g.,
missing
BW.
Therefore,
need
chemically
characterized
prior
their
use
hazard
testing
validate
representativeness.
The Science of The Total Environment,
Год журнала:
2023,
Номер
903, С. 166470 - 166470
Опубликована: Авг. 23, 2023
Traffic
pollution
has
been
linked
to
high
levels
of
metals
and
organic
contaminants
in
road-side
soils,
largely
due
abrasion
tires,
brake
pads
the
road
surface.
Although
several
studies
have
demonstrated
correlations
between
different
pollutants
various
traffic
variables,
they
mainly
focused
on
roads
with
medium
density
(>30,000
vehicles
per
day).
In
this
study
we
investigating
tire
wear
particles
road-related
(zinc,
copper,
lead,
chromium,
nickel,
metalloid
arsenic)
soils
low
rural
areas
(650-14,250
Different
explanatory
factors
were
investigated,
such
as
density,
speed,
%
heavy
vehicles,
matter
content,
annual
precipitation,
soil
types
roadside
slope
profiles.
The
results
show
particles,
from
2000
26,400
mg/kg
(0.2-2.6
d.w.
soil),
which
is
up
five
times
higher
compared
previously
reported
values
areas.
A
weak
but
significant
correlation
was
found
speed
precipitation.
No
relationship
metals.
concentrations
comparable
previous
Norway,
well
both
urban
other
countries.
For
metals,
all
together
explained
45
variation
observed,
(11
%)
content
(10
most
important
single
variables.
analysis
using
Pyrolysis
Gas
chromatography
Mass
Spectrometry
challenging,
presented
demonstrate
need
for
pretreatment
remove
samples
before
analysis.
The Science of The Total Environment,
Год журнала:
2024,
Номер
932, С. 173031 - 173031
Опубликована: Май 7, 2024
The
widespread
extensive
use
of
synthetic
polymers
has
led
to
a
substantial
environmental
crisis
caused
by
plastic
pollution,
with
microplastics
detected
in
various
environments
and
posing
risks
both
human
health
ecosystems.
possibility
fragments
be
dispersed
the
air
as
particles
inhaled
humans
may
cause
damage
respiratory
other
body
systems.
Therefore,
there
is
particular
need
study
pollutants.
In
this
study,
we
tested
combination
analytical
pyrolysis,
gas
chromatography-mass
spectrometry,
liquid
spectrometry
identify
quantify
their
additives
airborne
particulate
matter
settled
dust
within
workplace
environment:
WEEE
treatment
plant.
Using
combined
approach,
were
able
accurately
ten
eight
classes
polymer
additives.
identified
include
phthalates,
adipates,
citrates,
sebacates,
trimellitates,
benzoates,
organophosphates,
newly
developed
brominated
flame
retardants.
The Science of The Total Environment,
Год журнала:
2024,
Номер
916, С. 170320 - 170320
Опубликована: Янв. 24, 2024
In
environmental
analysis,
the
detection
of
water-soluble
synthetic
polymers
(WSSP)
presents
considerable
challenges.
Thus,
a
precise
and
reproducible
analytical
method
was
developed
using
continuous-flow
off-line
pyrolysis
with
gas
chromatography/mass
spectrometry
(GC/MS)
to
simultaneously
identify
multiple
from
single
sample.
WSSP
are
widely
used
in
industries
as
hydrogels
due
their
hydrophilic
character
potential
biocompatibility.
This
adaptability
is
reflected
ability
provide
customized
formulations
for
specific
needs,
such
development
personal
care
products,
medicine,
pharmaceuticals.
Specifically,
polyvinylpyrrolidone
(PVP),
poly(N-vinylcaprolactam)
(PNVCL),
polyethyleneimine
(PEI)
were
targeted
analysis
wastewater,
employing
unique
products
identification.
These
require
careful
assessment
wastewater
evaluate
risks
associated
release.
PVP
PNVCL
identified
through
two
while
six
utilized
identification
PEI.
The
validated
demonstrated
very
good
linearity
reproducibility,
correlation
coefficients
ranging
0.94
0.99
relative
standard
deviation
(RSD)
values
between
3
%
36
compounds.
limit
quantification
(LOQ)
three
ranged
1
10
μg
L-1.
Moreover,
average
recovery
rates
these
polymers,
determined
artificial
water
samples,
approx.
85
%.
Utilizing
method,
samples
seven
treatment
plants
Germany
successfully
analyzed,
confirming
presence
at
elevated
concentrations
L-1
range.
Notably,
untreated
influent
waters
exhibited
higher
polymer
levels
compared
treated
influents
effluents,
underscoring
significant
contribution
overall
content.
provides
an
efficient
tool
simultaneous
PVP,
PNVCL,
PEI
samples.
results
highlighted
prevalent
tested
indicating
abundance.
