Waste Management & Research The Journal for a Sustainable Circular Economy,
Год журнала:
2024,
Номер
42(8), С. 634 - 650
Опубликована: Март 22, 2024
The
extensive
use
of
plastic
materials
and
their
improper
disposal
results
in
high
amounts
waste
the
environment.
Aging
plastics
leads
to
breakdown
into
smaller
particles,
such
as
microplastics
(MPs)
nanoplastics.
This
research
investigates
used
agricultural
practices
they
contribute
MP
pollution
soils.
distribution
characteristics
MPs
soils
were
evaluated.
In
addition,
effect
on
soil
properties,
relationship
between
metals
soil,
fate
pesticides
influence
plant
growth
analysed,
discussing
legume,
cereal
vegetable
crops.
Finally,
a
brief
description
main
methods
chemical
analysis
identification
is
presented.
study
will
better
understanding
soil-plant
system.
changes
induced
by
parameters
can
lead
potential
benefits
it
possible
increase
availability
micronutrients
reduce
uptake
toxic
elements.
Furthermore,
although
remains
an
emerging
threat
ecosystems,
presence
may
result
soils,
highlighting
principles
circular
economy.
Analytical Chemistry,
Год журнала:
2024,
Номер
96(5), С. 2227 - 2235
Опубликована: Янв. 25, 2024
Determinations
of
micro/nanoplastics
(MNPs)
in
environmental
samples
are
essential
to
assess
the
extent
their
presence
environment
and
potential
impact
on
ecosystems
human
health.
With
aim
provide
a
sensitive
method
with
simplified
pretreatment
steps,
cooling-assisted
solid-phase
microextraction
(CA-SPME)
coupled
gas
chromatography–mass
spectrometry
(GC-MS)
is
proposed
as
new
approach
quantify
mass
concentrations
MNPs
water
soil
samples.
The
herein
CA-SPME
offers
unique
advantage
integrating
thermal
decomposition
enrichment
signature
compounds
into
one
step.
Poly(methyl
methacrylate)
(PMMA)
was
used
model
substance
verify
performance
this
work.
Theoretical
insights
demonstrated
that
pyrolysis
rate-determining
step
during
extraction
process
PMMA
effectively
decomposed
at
350
°C
an
estimated
incubation
time
13
min.
Eight
were
identified
products
by
CA-SPME-GC-MS
use
DVB/CAR/PDMS
coating,
wherein
methyl
methacrylate
considered
best
indicator
dimethyl
2-methylenesuccinate
selected
confirmation
compound.
Under
optimized
conditions,
exhibited
wide
linearity
(0.5–2000
μg
for
5–1000
soil)
high
sensitivity,
limits
detection
0.014
0.28
soil,
respectively.
Finally,
successfully
applied
determinations
real
satisfactory
recoveries
attained.
only
required
employment
filter
membrane
analysis,
while
analyzed
directly
without
any
pretreatment.
solvent-free
approach,
straightforward
operation,
sensitivity
show
great
analysis
different
Foods,
Год журнала:
2022,
Номер
11(18), С. 2871 - 2871
Опубликована: Сен. 16, 2022
Microplastic
(MP)
contamination
is
a
public
issue
for
the
environment
and
human
health.
Plastic-based
food
filter
bags,
including
polyethylene
terephthalate,
polypropylene,
nylon
6
(NY6),
polyethylene,
are
widely
used
soft
drink
sub-packaging,
increasing
risk
of
MPs
in
foods
environment.
Three
types
commercially
available
non-woven
woven
were
collected,
released
after
soaking
mapped
using
Raman
imaging
combined
with
chemometrics.
Compared
peak
area
at
single
characteristic
peak,
direct
classical
least
squares
calculation
was
more
efficient
reliable
identifying
MP
features.
Up
to
94%
bags
soaking,
there
no
significant
correlation
conditions.
Most
tiny
fragments
particles,
few
fibrous
620–840
μm
size.
Woven
NY6
had
lowest
releasing
MPs.
Source
exploration
revealed
that
most
originated
from
particles
adsorbed
on
surface
strings.
The
results
this
study
applicable
bag
assessment
provide
scientific
guidance
regulating
food.
Heliyon,
Год журнала:
2023,
Номер
9(9), С. e20119 - e20119
Опубликована: Сен. 1, 2023
The
water
treatment
for
microplastics
(MP)
at
a
Danish
groundwater-based
waterworks
was
assessed
by
Fourier-Transform
IR
micro-spectroscopy
(μFTIR)
(nominal
size
limit
6.6
μm)
and
compared
to
results
from
Raman
(μRaman)
1.0
on
the
same
sample
set.
MP
abundance
waterworks'
inlet
outlet
quantified
as
counts
per
cubic
metre
(N/m3)
estimated
mass
(μg/m3).
removal
efficiency
found
be
higher
when
analysing
μFTIR
(counts:
78.14
±
49.70%,
mass:
98.73
11.10%)
less
fluctuating
than
using
μRaman
43.2%,
75.1%).
However,
both
techniques
pointed
value
of
∼80%
counts'
MPs
>6.6
μm.
Contrarily
what
shown
μRaman,
no
systematic
leaking
plastic
elements
facility
could
identified
dataset,
either
(inlet
31.86
17.17
N/m3,
4.98
2.09
N/m3)
or
estimate
76.30
106.30
μg/m3,
2.81
2.78
μg/m3).
estimation
human
intake
drinking
calculated
data
(5
N/(year·capita))
proved
approximately
332
times
lower
that
although
in
line
with
previous
studies
employing
μFTIR.
By
merging
length
datasets
two
techniques,
it
false
negatives
became
prevalent
dataset
already
below
50
Further,
fitting
overall
frequency
ranges
power
function,
missed
95.7%
extrapolated
population
(1-1865.9
μm).
Consequently,
relying
only
may
have
led
underestimating
content
investigated
water,
most
1-50
μm
would
been
missed.
Journal of Consumer Protection and Food Safety,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 8, 2025
Abstract
Recent
studies
have
indicated
the
presence
of
micro-
and
nanoplastics
in
food
animal
origin.
To
address
concerns
regarding
human
dietary
plastic
uptake,
extensive
monitoring
using
validated
analytical
methods
is
required.
However,
a
major
challenge
analysis
lies
high
complexity
preparing
samples
rich
macromolecular
content
(e.g.,
proteins,
complex
lipids),
such
as
seafood.
Consequently,
this
study
aimed
to
optimise
sample
preparation
for
seafood,
meat,
milk,
honey,
eggs,
ensuring
negligible
impact
on
integrity.
Sample
matrices
were
digested
combinations
alkaline,
oxidative,
enzymatic
approaches,
with
incubation
periods
ranging
from
6
16
h.
Particles
rapidly
isolated
by
pressure-assisted
filtration,
which
retained
particles
lower
micron
range.
This
method,
used
isolating
microplastic
food,
was
compared
commonly
employed
vacuum
filtration
technique.
Pressure-assisted
improved
rates
matrix
removal
while
demonstrating
comparable
procedural
contamination
polymer
integrity
filtration.
The
feasibility
demonstrated
fluorescence
imaging.
In
contrast
microplastics,
(<
1
µm)
greater
potential
negative
biological
effects
due
their
small
size,
warranting
detailed
analysis.
low
particle
mass,
susceptibility
agglomeration,
detection
limits
conventional
spectroscopic
techniques
pose
unique
challenges.
Addressing
these
challenges
essential
developing
standardised
methodologies,
including
certified
reference
material,
enable
safety
assessments
nanoplastic
food.
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