Journal of Geophysical Research Atmospheres,
Journal Year:
2024,
Volume and Issue:
129(19)
Published: Sept. 30, 2024
Abstract
The
environmental
effects
of
airborne
micro‐
and
nano‐size
plastic
particles
are
poorly
understood.
Microscopy
chemical
analyses
atmospherically
deposited
on
snow
surfaces
at
high
elevation
(2,865–3,690
m)
in
the
Upper
Colorado
River
basin
(UCRB;
Rocky
Mountains)
revealed
presence
black
substances
intimately
associated
with
microplastic
fibers,
interpreted
to
have
originated
as
tire
matter.
Identical
similar
occur
shredded
tires
road‐surface
samples.
substance
responsible
for
color
all
is
carbon
black,
a
graphitic
light‐absorbing
additive
produced
by
hydrocarbon
combustion
that
homogeneously
permeates
mixture
polymers
other
additives.
Such
matter
may
thus
exert
radiative
closely
those
carbon.
many
organic
compound
types
common
tires,
measured
two‐dimensional
gas
chromatography,
suggests
road‐tire‐wear
among
particulates
advance
onset
rate
melt
UCRB.
mass
shed
from
vehicles
be
estimated
multiplying
amounts
eroded
tire‐per‐distance
traveled
vehicular
distances.
Under
combination
measurements
assumptions
about
properties
atmospheric
tire‐wear
particles,
these
might
add
10%–30%
carbon,
an
estimate
ripe
revision.
On
regional
global
scales,
emitted
likely
vary
factors
geographic
source,
transport
pathway,
depositional
setting.
Toxics,
Journal Year:
2023,
Volume and Issue:
11(11), P. 936 - 936
Published: Nov. 17, 2023
Road
dust
is
one
of
the
environment’s
most
important
microplastic
and
plastic
additive
sources.
Traffic
vehicles
wear
tires
can
release
these
emerging
contaminants,
which
be
resuspended
in
air
washed
off
by
stormwater
runoff.
In
this
study,
a
concurrent
quantification
chemical
characterization
additives,
plasticizers,
natural
non-plastic
synthetic
fibers
(APFs),
small
microplastics
(SMPs,
<100
µm)
samples
highway
road
(HWRD)
was
performed.
The
sampling
procedure
optimized,
as
well
pretreatment
(extraction,
purification,
filtration)
analysis
via
micro-FTIR.
average
length
SMPs
88
µm,
while
width
50
µm.
highest
abundance
detected
HWRD
7
(802
±
39
SMPs/g).
Among
polymers
characterized
quantified,
vinyl
ester
polytetrafluoroethylene
were
predominant.
APFs’
particle
80
µm
their
45
confirming
that
both
pollutants
are
less
than
100
size.
Their
maximum
concentration
RD7,
with
1044
APFs/g.
Lubricants
plasticizers
two
abundant
categories,
followed
vulcanizing
agents,
accelerators,
pre-vulcanizing
retarders
derived
mainly
from
tires.
A
potential
relationship
between
APFs
different
seasons
observed,
lower
summer
for
higher
winter
2022.
These
results
will
significant
investigating
load
highways,
urgently
necessary
more
accurate
inclusion
emission
inventories,
receptor
modeling,
health
protection
programs
policymakers,
especially
water
pollution
policies,
to
prevent
risks
human
health.
Air,
Journal Year:
2024,
Volume and Issue:
2(2), P. 109 - 121
Published: April 28, 2024
Sidewalk
cleaning
operations
are
essential
to
maintaining
a
clean
and
safe
urban
environment.
Despite
their
vital
role,
these
activities,
particularly
the
blowing
of
road
dust,
can
lead
resuspension
dust
associated
pollutants,
which
poses
risks
human
health
While
role
blowers
on
particulate
matter
has
been
investigated,
there
is
limited
information
emitted
bioaerosols.
This
study
aimed
compare
occupational
exposure
operators
passersby
during
sidewalk
using
two
manual
methods—blowing
jet
washing—in
distinct
environments.
The
focused
metal
traffic
tracers
(copper
(Cu),
zinc
(Zn),
manganese
(Mn),
cadmium
(Cd),
(Pb))
cultivable/non-cultivable
microorganisms.
We
showed
that
resuspends
inhalable
particles
containing
metals
(Cu,
Zn,
Mn,
but
not
Cd
or
Pb)
bioaerosols
(fungi
Gram-negative
bacteria)
throughout
year.
represents
an
important
source
for
blower
potential
long-term
respiratory
risk
them.
Operators
working
in
cabs
shielded
from
such
exposure,
passersby,
especially
vulnerable
populations,
may
be
at
risk.
washing
reduces
operator
bacteria
comparison
blowing,
it
does
mitigate
fungal
vegetated
sites.
These
findings
underscore
necessity
implementation
effective
protective
measures
development
alternative
methods
risks.
IOP Conference Series Earth and Environmental Science,
Journal Year:
2024,
Volume and Issue:
1396(1), P. 012018 - 012018
Published: Sept. 1, 2024
Abstract
Concrete
is
a
very
abundant
building
material
and
flexible
in
construction.
Yet
cement
the
main
used
concrete
mixture,
which
consumed
lot
of
energy
money.
Cement
un-eco-friendly
when
it
comes
to
production
contributor
global
warming.
On
other
hand,
Polymers
can
be
toxic
people,
fauna,
flora.
In
last
century,
Egyptian
citizens
complained
that
waste
has
increased,
inappropriate
disposal
effect
health
quality
life.
The
alternative
burn
polymers;
however,
will
produce
emissions
break
down
ozone
layer.
Previous
researchers
tried
replace
with
an
mixture.
Therefore,
this
research
intends
create
green
block
cement-less
mixture
use
polymers
as
binding
blocks.
This
follow
experimental
method
after
discussing
properties
materials.
Then
mix
created,
percentage
replaced;
thus,
making
cheap
less
more
ecological
economical.
Tests
performed
determine
if
proposed
suitable
for
mass
doesn’t
violate
international
standards.
tests
include
compressive
strength,
tensile
abrasion.
finally,
cost
analysis
calculated
compare
construction
costs
before
using
