Journal of Analytical Atomic Spectrometry,
Journal Year:
2024,
Volume and Issue:
39(7), P. 1736 - 1740
Published: Jan. 1, 2024
Microwave-assisted
extraction
(MAE)
treatments
seem
to
be
a
promising
sample
preparation
strategy
isolate
nanomaterials
(NMs)
from
environmental
samples
prior
single
particle
inductively
coupled
plasma
mass
(spICP-MS)
determination.
Micromachines,
Journal Year:
2023,
Volume and Issue:
15(1), P. 24 - 24
Published: Dec. 22, 2023
Colloidal
systems
and
their
control
play
an
essential
role
in
daily
human
activities,
but
several
drawbacks
lead
to
avoidance
of
extensive
application
some
more
productive
areas.
Some
roadblocks
are
a
lack
knowledge
regarding
how
influence
address
colloidal
forces,
as
well
practical
devices
understand
these
systems.
This
review
focuses
on
applying
dynamic
light
scattering
(DLS)
powerful
tool
for
monitoring
characterizing
nanoparticle
aggregation
dynamics.
We
started
by
outlining
the
core
ideas
behind
DLS
it
may
be
used
examine
particle
size
distribution
dynamics;
then,
last
section,
we
included
options
chemically
processed
toner.
In
addition,
pinpointed
gaps
difficulties
that
obstruct
use
real-world
situations.
Although
widely
used,
has
limits
when
dealing
with
complicated
systems,
including
combinations
nanoparticles,
high
concentrations,
non-spherical
particles.
discussed
issues
offered
possible
solutions
incorporation
supplementary
characterization
approaches.
Finally,
emphasized
critical
is
close
gap
between
fundamental
studies
translation
into
applications,
recognizing
challenges
science.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(23), P. 10368 - 10377
Published: May 30, 2024
The
insect
Tenebrio
molitor
exhibits
ultrafast
efficiency
in
biodegrading
polystyrene
(PS).
However,
the
generation
and
fate
of
nanoplastics
(NPs)
intestine
during
plastic
biodegradation
remain
unknown.
In
this
study,
we
investigated
PS
microplastics
(MPs)
mediated
by
T.
larvae
over
a
4-week
period
confirmed
analyzing
Δδ13C
before
after
biotreatment
(−28.37‰
versus
−24.88‰)
as
an
effective
tool.
·OH
radicals,
primarily
contributed
gut
microbiota,
H2O2,
produced
host,
both
increased
MP
digestion.
size
distribution
residual
particles
excrements
fluctuated
within
micrometer
ranges.
NPs
were
detected
but
not
excrements.
At
end
Weeks
1,
2,
3,
4,
concentrations
tissues
3.778,
2.505,
2.087,
2.853
ng/lava,
respectively,
while
glands
quantified
at
0.636,
0.284,
0.113
ng/lava
eventually
fell
below
detection
limit.
remained
limit
5
6.
This
indicates
that
initially,
generated
entered
glands,
then
declined
gradually
disappeared
or
possibly
biodegraded
Week
associated
with
elevated
plastic-degrading
capacities
larvae.
Our
findings
unveil
rapid
synergistic
larval
host
well
NPs,
providing
new
insights
into
risks
invertebrate-mediated
biodegradation.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(40), P. 15099 - 15111
Published: Sept. 26, 2023
It
remains
unknown
whether
plastic-biodegrading
macroinvertebrates
generate
microplastics
(MPs)
and
nanoplastics
(NPs)
during
the
biodegradation
of
plastics.
In
this
study,
we
utilized
highly
sensitive
particle
analyzers
pyrolyzer-gas
chromatography
mass
spectrometry
(Py-GCMS)
to
investigate
possibility
generating
MPs
NPs
in
frass
polystyrene
(PS)
low-density
polyethylene
(LDPE)
foams
by
mealworms
(Tenebrio
molitor
larvae).
We
also
developed
a
digestive
biofragmentation
model
predict
unveil
fragmentation
process
ingested
The
removed
77.3%
PS
71.1%
PE
over
6-week
test
period.
Biodegradation
both
polymers
was
verified
increase
δ13C
signature
residual
plastics,
changes
molecular
weights,
formation
new
oxidative
functional
groups.
accumulated
due
biofragmentation,
with
exhibiting
maximum
percentage
number
at
2.75
7.27
μm,
respectively.
Nevertheless,
were
not
detected
using
laser
light
scattering
sizer
detection
limit
10
nm
Py-GCMS
analysis.
predicted
that
progressively
size-reduced
rapidly
biodegraded,
indicating
shorter
half-life
smaller
plastic
particles
have.
This
study
allayed
concerns
regarding
accumulation
plastic-degrading
provided
critical
insights
into
factors
controlling
MP
NP
generation
macroinvertebrate-mediated
biodegradation.