Environments,
Год журнала:
2023,
Номер
10(10), С. 181 - 181
Опубликована: Окт. 13, 2023
Stormwater
outfalls
are
frequently
listed
as
sources
of
microplastic
(MP)
contamination
into
aquatic
systems.
To
date,
few
studies
have
been
undertaken
to
determine
if
stormwater
MP
hotspots
in
estuaries.
This
study
compared
the
surface
waters
adjacent
and
at
least
one
kilometer
away
from
a
subtropical
estuarine
system:
Indian
River
Lagoon
(IRL)
on
east
coast
Florida,
USA.
Citizen
scientists
collected
water
samples
monthly
for
12
months
(n
=
24)
control
sites
6).
Overall,
958
MPs
were
identified
1800
L
water,
with
most
found
fall
during
hurricane
season.
(mean:
0.53
MP/L)
discharge
smaller
(GLM:
p
0.0008)
significantly
higher
amounts
0.02),
documenting
point-source
pollutant
this
system.
Two
types
drained
IRL—closed
culverts
open
drainage
channels—with
no
difference
abundances
between
two
0.60).
Microfibers
dominated
collections
(89%).
Using
ATR-FTIR
polymer
identification,
80%
materials
plastic;
polypropylene
(29%),
polyethylene
(18%),
terephthalate
(18%)
abundant
polymers
found.
The Science of The Total Environment,
Год журнала:
2024,
Номер
927, С. 171153 - 171153
Опубликована: Март 7, 2024
About
3
billion
new
tires
are
produced
each
year
and
about
800
million
become
waste
annually.
Global
dependence
upon
from
natural
rubber
petroleum-based
compounds
represents
a
persistent
complex
environmental
problem
with
only
partial
often-times,
ineffective
solutions.
Tire
emissions
may
be
in
the
form
of
whole
tires,
tire
particles,
chemical
compounds,
which
is
transported
through
various
atmospheric,
terrestrial,
aquatic
routes
built
environments.
Production
use
generates
multiple
heavy
metals,
plastics,
PAH's,
other
that
can
toxic
alone
or
as
cocktails.
Used
require
storage
space,
energy
intensive
to
recycle,
generally
have
few
post-wear
uses
not
also
potential
sources
pollutants
(e.g.,
crumb
rubber,
pavements,
burning).
particles
emitted
during
major
component
microplastics
urban
runoff
source
unique
highly
potent
substances.
Thus,
represent
ubiquitous
pollutant
requires
comprehensive
examination
develop
effective
management
remediation.
We
approach
issue
pollution
holistically
by
examining
life
cycle
across
production,
emissions,
recycling,
disposal.
In
this
paper,
we
synthesize
recent
research
data
human
health
risks
associated
use,
disposal
discuss
gaps
our
knowledge
fate
transport,
well
toxicology
leachates.
examine
remediation
approaches
for
addressing
exposure
tires.
consider
three
levels:
their
state,
particulates,
mixture
Finally,
information
understanding
outline
key
questions
improve
ability
manage
remediate
pollution.
The Science of The Total Environment,
Год журнала:
2023,
Номер
912, С. 168835 - 168835
Опубликована: Ноя. 27, 2023
The
study
identified
and
quantified
nine
plastic
polymers
frequently
detected
in
the
environment
by
collecting
sediment
seawater
samples
from
coastal
areas
Auckland,
New
Zealand.
Polymer
types,
size
distributions,
number
of
microplastics
(MPs)
were
analyzed
using
a
laser
direct
infrared
(LDIR)
imaging
technique.
Compared
to
conventional
spectroscopic
or
microscopic
methods,
LDIR
enabled
capturing
quantifying
MPs
much
lower
ranges
(20–5000
μm).
results
demonstrated
widespread
occurrence
Auckland
environment,
with
polyethylene
terephthalate
(PET)
being
most
polymer.
MP
contamination
levels
ranged
13
83
particles
per
liter
water
1200
3400
particles/kg
dry
sand
beach
sediments.
Six
additional
locations
investigated
assess
contribution
stormwater
drains
environment.
total
count
extracted
sediments
near
reached
maximum
18,000
sand,
representing
an
order
magnitude
increase
compared
found
at
same
location.
In
contrast
prevalence
PET
polyamide
observed
waters,
polyurethane
emerged
as
predominant
vicinity
drain
sediments,
implying
that
variation
could
potentially
stem
distinct
sources
plastics.
This
significant
disparity
quality
quantity
underscored
potential
link
between
urban
runoff
pollution
marine
ecosystems.
A
sample
preparation
method
100
g
was
developed
used
compare
detection
samples.
commonly
5
showed
higher
extraction
efficiency
better
abundant
MPs,
but
new
previously
missed,
less
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
285, С. 117154 - 117154
Опубликована: Окт. 1, 2024
Microplastics
(MPs)
are
pervasive
across
ecosystems,
likely
posing
significant
environmental
and
health
risks
based
on
more
evidence.
In
this
study,
we
searched
through
the
Web
of
Science
Core
Collection
obtained
1039
papers
for
visualization
analysis.
order
to
discuss
chemical
composition,
migration,
transformation
potential
risk
MPs,
135
sets
relevant
data
in
soil,
water,
atmosphere
were
collected
China
as
a
typical
region,
which
is
hotspot
region
investigation
MPs.
The
results
showed
that
primary
polymer
categories
MPs
environment
be
polypropylene,
polyethylene,
polystyrene.
soil
contains
quantity
averaging
at
12,107.42
items·kg
