Environmental Science & Technology,
Год журнала:
2023,
Номер
57(30), С. 10911 - 10918
Опубликована: Июль 13, 2023
Microplastics
have
been
detected
in
human
stool,
lungs,
and
placentas,
which
direct
exposure
to
the
external
environment
through
various
body
cavities,
including
oral/anal
cavity
uterine/vaginal
cavity.
Crucial
data
on
microplastic
completely
enclosed
organs
are
still
lacking.
Herein,
we
used
a
laser
infrared
chemical
imaging
system
scanning
electron
microscopy
investigate
whether
microplastics
exist
heart
its
surrounding
tissues.
Microplastic
specimens
were
collected
from
15
cardiac
surgery
patients,
6
pericardia,
epicardial
adipose
tissues,
11
pericardial
3
myocardia,
5
left
atrial
appendages,
7
pairs
of
pre-
postoperative
venous
blood
samples.
not
universally
present
all
tissue
samples,
but
nine
types
found
across
five
with
largest
measuring
469
μm
diameter.
Nine
also
samples
maximum
diameter
184
μm,
type
distribution
showed
alterations
following
surgical
procedure.
Moreover,
presence
poly(methyl
methacrylate)
appendage,
tissue,
cannot
be
attributed
accidental
during
surgery,
providing
evidence
patients
undergoing
surgery.
Further
research
is
needed
examine
impact
introduction
potential
effects
internal
health.
The cryosphere,
Год журнала:
2022,
Номер
16(6), С. 2127 - 2145
Опубликована: Июнь 7, 2022
Abstract.
In
recent
years,
airborne
microplastics
have
been
identified
in
a
range
of
remote
environments.
However,
data
throughout
the
Southern
Hemisphere,
particular
Antarctica,
are
largely
absent
to
date.
We
collected
snow
samples
from
19
sites
across
Ross
Island
region
Antarctica.
Suspected
microplastic
particles
were
isolated
and
their
composition
confirmed
using
micro-Fourier
transform
infrared
spectroscopy
(µFTIR).
all
Antarctic
at
an
average
concentration
29
L−1,
with
fibres
most
common
morphotype
polyethylene
terephthalate
(PET)
polymer.
To
investigate
sources,
backward
air
mass
trajectories
run
time
sampling.
These
indicate
potential
long-range
transportation
up
6000
km,
assuming
residence
6.5
d.
Local
sources
also
as
inputs
into
environment
polymers
consistent
those
used
clothing
equipment
nearby
research
stations.
This
study
adds
growing
body
literature
regarding
ubiquitous
pollutant
establishes
presence
Journal of Hazardous Materials Advances,
Год журнала:
2022,
Номер
6, С. 100057 - 100057
Опубликована: Фев. 24, 2022
The
last
decade
has
been
transformative
for
micro(nano)plastic
(MnP)
research
with
recent
discoveries
revealing
the
extent
and
magnitude
of
MnP
pollution,
even
in
world's
most
remote
places.
Historically,
while
researchers
recognized
that
plastic
pollution
was
derived
from
land-based
sources,
it
generally
believed
microplastic
particles
(i.e.,
fragments
<5
mm)
only
a
marine
issue
effects
largely
impacting
biota.
However,
over
progressed
rapidly
MnPs
freshwater,
snow,
ice,
soil,
terrestrial
biota,
air
found
ocean
spray.
have
now
every
environmental
compartment
on
earth,
within
tissues
gastrointestinal
tracts
thousands
species,
including
humans,
resulting
harmful
effects.
10
years
also
seen
development
new
techniques
analysis,
re-purposing
old
technologies
allowing
us
to
determine
down
nano
size
range
(<1
µm).
This
short
review
summarizes
what
key
milestones
major
advances
made
nanoplastic
environment,
their
fate,
decade.
Environmental Research,
Год журнала:
2022,
Номер
208, С. 112741 - 112741
Опубликована: Янв. 19, 2022
It
has
been
established
that
various
anthropogenic
contaminants
have
already
reached
all
the
world's
pristine
locations,
including
polar
regions.
While
some
of
those
contaminants,
such
as
lead
and
soot,
are
decreasing
in
environment,
thanks
to
international
regulations,
other
novel
emerge.
Plastic
pollution
shown
a
durable
pollutant,
and,
since
recently,
smaller
plastics
particles
identified
environments
(air,
water
soil).
Considerable
research
exists
measuring
5
mm
micrometre
size
range
(microplastics).
However,
far
less
is
known
about
debris
fragmented
sub-micrometre
(nanoplastics).
As
these
small
light,
it
expected
they
most
remote
places
on
Earth,
e.g.
transported
across
globe
by
air
movement.
In
this
work,
we
used
method
based
Thermal
Desorption
-
Proton
Transfer
Reaction
Mass
Spectrometry
(TD-PTR-MS)
detect
measure
nanoplastics
different
types
sampled
from
Greenland
firn
core
(T2015-A5)
sea
ice
Antarctica.
We
identify
polyethylene
(PE),
polypropylene
(PP),
terephthalate
(PET),
polystyrene
(PS),
polyvinyl
chloride
(PVC),
Tire
wear
nanoparticles
14
m
deep
PE,
PP
PET
Nanoplastics
mass
concentrations
were
average
13.2
ng/mL
for
samples
52.3
Antarctic
ice.
further
discuss
possible
sources
found
at
which
likely
involve
complex
processes
plastic
circulation
(emission
both
land
surface,
atmospheric
marine
circulation).
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Авг. 10, 2023
Seas
are
polluted
with
macro-
(>5
mm)
and
microplastics
(<5
mm).
However,
few
studies
account
for
both
types
when
modeling
water
quality,
thus
limiting
our
understanding
of
the
origin
(e.g.,
basins)
sources
plastics.
In
this
work,
we
model
riverine
microplastic
exports
to
seas
identify
their
main
in
over
ten
thousand
basins.
We
estimate
that
rivers
export
approximately
0.5
million
tons
plastics
per
year
worldwide.
Microplastics
dominant
almost
40%
basins
Europe,
North
America
Oceania,
because
sewage
effluents.
Approximately
80%
global
population
live
river
where
macroplastics
mismanaged
solid
waste.
These
include
many
African
Asian
rivers.
10%
basins,
(as
mass)
equally
important
high
effluents
waste
production.
Our
results
could
be
useful
prioritize
reduction
policies
ACS Catalysis,
Год журнала:
2022,
Номер
12(15), С. 9307 - 9324
Опубликована: Июль 18, 2022
Plastic
waste
triggers
a
series
of
concerns
because
its
disruptive
impact
on
the
environment
and
ecosystem.
From
point
view
catalysis,
however,
end-of-life
plastics
can
be
seen
as
an
untapped
feedstock
for
preparation
value-added
products.
Thus,
development
diversified
catalytic
approaches
valorization
is
urgent.
Previous
reviews
this
field
have
systematically
summarized
progress
made
plastic
reclamation.
In
review,
we
emphasize
design
processes
by
leveraging
state-of-the-art
technologies
from
other
developed
fields
to
derive
valuable
polymers,
functional
materials,
chemicals
plastics.
The
principles,
mechanisms,
opportunities
chemical
(thermo-,
electro-,
photocatalytic)
well
biocatalytic
ones
are
discussed,
which
may
provide
more
insights
future
processes.
Finally,
outlooks
perspectives
accelerate
toward
feasible
economy
discussed.
