Talanta Open,
Год журнала:
2023,
Номер
7, С. 100223 - 100223
Опубликована: Апрель 28, 2023
A
flexible
Surface-Enhanced
Raman
Spectroscopy
(SERS)
substrate
based
on
silver
nanoparticles
encapsulated
in
an
agar
gel
has
been
probed
to
detect
the
fungicide
thiabendazole
(TBZ)
reaching
a
limit
of
detection
(LOD)
30
ng/cm2.
In
addition,
simple
and
sensitive
strategy
was
employed
for
in-situ
TBZ
fruit
vegetable
peels.
For
that
purpose,
peels
different
fruits
vegetables
were
intentionally
contaminated
with
amount
TBZ,
analyte
subsequently
extracted
within
few
seconds
by
gently
rubbing
surface
SERS
substrate.
The
lowest
value
detected
eggplant
green
pepper
50
values
achieved
apple
pear
0.20
μg/cm2
40
ng/cm2,
respectively.
On
other
hand,
tomato
strawberry
0.50
μg/cm2.
variation
sensitivity
can
be
attributed
differences
properties
above
results
show
this
further
contaminants
practical
applications
food
safety
inspection.
Alexandria Engineering Journal,
Год журнала:
2023,
Номер
83, С. 134 - 139
Опубликована: Окт. 28, 2023
Sports
doping
is
a
persistent
challenge
in
competitive
sports,
undermining
the
integrity
of
athletic
competitions
and
posing
health
risks
to
athletes.
This
study
focuses
on
development
surface-enhanced
Raman
spectroscopy
(SERS)
chip
for
detection
β-agonists,
such
as
clenbuterol,
ractopamine,
salbutamol,
which
are
commonly
abused
performance-enhancing
drugs.
The
SERS
was
constructed
by
depositing
silver
nanoparticles
(AgNPs)
onto
activated
carbon
(AC)
substrate,
utilizing
their
plasmonic
properties
ease
synthesis.
successful
loading
AgNPs
AC
confirmed
SEM
imaging,
demonstrating
uniform
distribution
surface
AC.
exhibited
enhanced
sensitivity
detecting
β-agonists
compared
conventional
methods.
signals
analytes
decreased
with
decreasing
concentrations,
indicating
chip's
ability
detect
low-concentration
analytes.
Notably,
AC/AgNPs
composite
demonstrated
stronger
alone,
attributed
improved
efficiency
electromagnetic
field
enhancement
provided
substrate.
limit
salbutamol
found
be
0.003
mg/L,
0.001
0.007
respectively.
developed
offers
rapid
sensitive
sports
control.
It
overcomes
limitations
methods,
immunoassays
chromatographic
techniques,
terms
sensitivity,
selectivity,
sample
preparation
time.
application
anti-doping
efforts
holds
great
promise
maintaining
fair
clean
competitions.
Foods,
Год журнала:
2024,
Номер
13(15), С. 2363 - 2363
Опубликована: Июль 26, 2024
Chlorpyrifos
is
one
of
the
most
widely
used
broad-spectrum
insecticides
in
agriculture.
Given
its
potential
toxicity
and
residue
food
(e.g.,
tea),
establishing
a
rapid
reliable
method
for
determination
chlorpyrifos
crucial.
In
this
study,
strategy
combining
surface-enhanced
Raman
spectroscopy
(SERS)
intelligent
variable
selection
models
detecting
tea
was
established.
First,
gold
nanostars
were
fabricated
as
SERS
sensor
measuring
spectra.
Second,
raw
spectra
preprocessed
to
facilitate
quantitative
analysis.
Third,
partial
least
squares
model
four
outstanding
models,
Monte
Carlo-based
uninformative
elimination,
competitive
adaptive
reweighted
sampling,
iteratively
retaining
informative
variables,
iterative
space
shrinkage
approach,
developed
comparative
study.
The
repeatability
reproducibility
tests
demonstrated
excellent
stability
proposed
strategy.
Furthermore,
sensitivity
assessed
by
estimating
limit
detection
values
various
models.
Finally,
two-tailed
paired
t-tests
confirmed
that
accuracy
equivalent
gas
chromatography–mass
spectrometry.
Hence,
provides
promising
tea.
Talanta Open,
Год журнала:
2023,
Номер
7, С. 100223 - 100223
Опубликована: Апрель 28, 2023
A
flexible
Surface-Enhanced
Raman
Spectroscopy
(SERS)
substrate
based
on
silver
nanoparticles
encapsulated
in
an
agar
gel
has
been
probed
to
detect
the
fungicide
thiabendazole
(TBZ)
reaching
a
limit
of
detection
(LOD)
30
ng/cm2.
In
addition,
simple
and
sensitive
strategy
was
employed
for
in-situ
TBZ
fruit
vegetable
peels.
For
that
purpose,
peels
different
fruits
vegetables
were
intentionally
contaminated
with
amount
TBZ,
analyte
subsequently
extracted
within
few
seconds
by
gently
rubbing
surface
SERS
substrate.
The
lowest
value
detected
eggplant
green
pepper
50
values
achieved
apple
pear
0.20
μg/cm2
40
ng/cm2,
respectively.
On
other
hand,
tomato
strawberry
0.50
μg/cm2.
variation
sensitivity
can
be
attributed
differences
properties
above
results
show
this
further
contaminants
practical
applications
food
safety
inspection.
