Environmental Science & Technology,
Год журнала:
2022,
Номер
56(18), С. 13029 - 13035
Опубликована: Сен. 2, 2022
Polylactic
acid
(PLA)
is
the
most
commonly
used
biodegradable
plastic
with
rapid
growth
in
recent
years.
This
leads
to
predictable
increased
pollution
of
PLA
microplastics
(MPs)
environment.
However,
quantification
methods
for
MPs
are
still
lacking.
In
this
study,
a
method
based
on
alkali-assisted
thermal
depolymerization
and
liquid
chromatography–tandem
mass
spectrometry
(LC–MS/MS)
analysis
was
developed
quantify
MPs.
After
background
monomer
compound
removed,
were
efficiently
depolymerized
lactic
detected
by
LC–MS/MS
limit
18.7
ng/g.
The
ideal
recovery
spiked
93%
obtained,
did
not
need
be
separated
or
extracted
advance
from
environmental
samples.
Using
method,
all
sediment
samples
reservoir
at
range
53.5–491
ng/g
dw,
concentrations
decreased
depth.
addition,
after
soaking
water
95
°C
30
min,
approximately
12
μg
released
single
teabag.
Eco-Environment & Health,
Год журнала:
2022,
Номер
1(1), С. 11 - 22
Опубликована: Март 1, 2022
There
are
increasing
concerns
over
the
threat
of
nanoplastics
to
environmental
and
human
health.
However,
multidisciplinary
barriers
persist
between
communities
assessing
risks
As
a
result,
hazards
remain
uncertain.
Here,
we
identify
key
knowledge
gaps
by
evaluating
exposure
in
environment,
their
bio-nano
interactions,
examining
potential
humans
environment.
We
suggest
considering
complex
dynamic
mixture
polymers,
additives,
contaminants,
with
interconnected
call
for
comprehensive
integration
One
Health
approach
produce
robust
evidence
threats
at
planetary
level.
Although
there
many
challenges,
this
holistic
incorporates
relevance
multi-sectoral
responses,
which
provide
opportunity
risk
mitigation
strategies
build
resilient
health
systems.
Environmental Technology & Innovation,
Год журнала:
2024,
Номер
35, С. 103729 - 103729
Опубликована: Июнь 26, 2024
The
interaction
between
microplastics
(MPs)
and
pollutants
is
crucial
for
assessing
the
environmental
risk
of
MPs.
It
necessary
to
pay
attention
adsorption/desorption
behavior
antibiotics
on
MPs
due
their
potential
role
in
antibiotic
resistance.
When
MPs-loaded
are
ingested
by
organisms,
they
enter
gastrointestinal
tract
undergo
desorption,
leading
corresponding
toxic
effects.
Existing
literature
primarily
focuses
adsorption
behavior,
while
there
a
lack
systematic
generalizations
desorption
or
combined
effects
organisms.
Therefore,
this
article
provides
review
mechanisms,
biological
tract.
Desorption
suggests
that
characteristics
(aging
hydrophobicity)
components
fluid
(digestive
enzyme
species
pH)
can
also
have
effect
desorption.
Moreover,
summarizes
induced
MPs-antibiotics,
demonstrating
either
enhance
reduce
plants,
microorganisms,
aquatic
animals.
Since
methodological
uniformity
relevance
natural
environment
main
shortcomings
existing
literature,
future
research
should
focus
actual
water
given
region
studying
at
gene,
protein,
metabolic
levels.
This
direction
expected
provide
valuable
references
insights
evaluating
antibiotics.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(8), С. 3702 - 3713
Опубликована: Фев. 15, 2024
Microplastics
are
found
in
various
human
tissues
and
considered
harmful,
raising
concerns
about
exposure
to
microplastics
the
environment.
Existing
research
has
analyzed
indoor
occupational
scenarios,
but
long-term
monitoring
of
ambient
atmospheric
(AMPs),
especially
highly
polluted
urban
regions,
needs
be
further
investigated.
This
study
estimated
environmental
AMPs
by
considering
inhalation,
dust
ingestion,
dermal
three
functional
zones
within
a
megacity.
The
annual
quantity
was
7.37
×
104
items
for
children
1.06
105
adults,
comparable
with
microplastic
consumption
from
food
water.
Significant
spatiotemporal
differences
were
observed
characteristics
that
humans
exposed
to,
wind
speed
rainfall
frequency
mainly
driving
these
changes.
AMP
green
land
spaces,
which
recognized
as
relatively
low
zones,
public
service
residential
zones.
Notably,
significant
positive
correlations
between
pathogenicity
airborne
bacterial
community
discovered.
size
immune-mediated
disease
risks
brought
microbes
showed
most
relationship,
where
Sphingomonas
might
act
potential
key
mediator.
Frontiers in Microbiology,
Год журнала:
2022,
Номер
13
Опубликована: Апрель 25, 2022
There
has
been
a
steady
rise
in
the
production
and
disposal
of
biodegradable
plastics.
Unlike
microorganisms
present
biofilms
on
non-biodegradable
plastic
surfaces
(the
"plastisphere"),
plastisphere
not
well-characterized.
As
polymer
structure
higher
microbial
affinity
than
that
plastic,
their
plastispheres
are
assumed
to
be
different.
This
review
summarizes
reported
differences
communities
surface
plastics,
discusses
driving
forces
behind
these
differences,
potential
environmental
risks.
Overall,
biomass
was
observed
lower
plastic.
The
community
microbes
both
diverse,
mainly
due
properties
surface,
such
as
charge,
hydrophilicity/hydrophobicity,
roughness,
bioavailability
components
for
microbes.
Further
research
should
focus
developing
degrade
faster
environment,
revealing
mechanism
enrichment
ARGs
pathogens
understanding
influence
evolution
selection
plastic-degrading
potential.
