In
recent
years,
owing
to
the
widespread
use
of
pesticides
in
agricultural
products,
an
increasing
concerns
have
been
arose
on
food
safety.
Therefore,
it
is
great
importance
develop
simple,
rapid,
and
effective
analytical
methods
for
sensitive
detection
pesticide
residues
samples.
this
work,
we
developed
electrochemical-surface
enhanced
Raman
spectroscopy
(EC-SERS)
sensor
rapid
acetamiprid
(AAP).
AuNPs/ITO
SERS
substrates
were
prepared
via
in-situ
electrodepositing
dense
gold
nanoparticles
(AuNPs)
indium
tin
oxide
(ITO)
electrode,
which
showed
good
homogeneity
with
a
relative
standard
deviation
(RSD)
8.9%.
With
addition
AAP
into
electrolytic
cell,
intensity
was
linearly
related
concentration
under
applied
potential
(+0.3
V).
Under
optimal
experimental
conditions,
method
exhibited
linear
range
0.05
50
μM,
limit
(LOD,
3S/M)
0.02
μM.
Finally,
confirmed
by
HPLC-MS
real
samples,
revealing
its
application
Desalination and Water Treatment,
Год журнала:
2024,
Номер
318, С. 100376 - 100376
Опубликована: Апрель 1, 2024
Color
is
the
first
pollutant
that
detected
in
wastewater
and
can
be
discharged
into
through
various
industries.
Sunset
yellow
an
azo
dye
used
food,
health
pharmaceutical
Due
to
its
low
price
good
quality,
this
color
industries
more
than
natural
colorants.
The
aim
of
study
was
investigate
effect
granular
ferric
hydroxide
(GFH)
on
removal
sunset
from
aqueous
solution
using
response
surface
methodology
(RSM).
In
study,
GFH
employed
remove
solution.
saving
time,
cost
getting
optimum
conditions,
important
factors
adsorption
optimized
by
RSM.
morphology
adsorbent
determined
scanning
electron
microscopy.
results
revealed
conditions
for
with
design
experiment
were
concentration=24
mg/L,
dose=2.4
g/L,
reaction
time=25
min.
addition,
based
results,
best-fitted
model
quadratic
(R2=0.966,
R2adj=0.79
R2pred=0.936).
According
obtained
successful
removal.
Therefore,
it
suggested
use
process
solutions.
Biosensors,
Год журнала:
2024,
Номер
14(10), С. 457 - 457
Опубликована: Сен. 25, 2024
Herein,
we
report
a
ratio-based
electrochemical
biosensor
for
the
detection
of
interleukin-6
(IL-6).
We
electropolymerized
methylene
blue
(MB)
on
surface
screen-printed
carbon
electrodes;
introduced
an
internal
reference
signal
probe;
modified
carboxylate
multi-walled
nanotubes
electrode
to
increase
electrochemically
active
area;
and
finally
linked
amino-modified
IL-6
aptamer
through
Schiff
base
reaction,
with
bovine
serum
albumin
(BSA)
added
mask
non-specific
adsorption.
After
adding
samples,
I
Molecules,
Год журнала:
2024,
Номер
29(21), С. 5026 - 5026
Опубликована: Окт. 24, 2024
This
review
explores
electrochemical
sensing
strategies
for
synthetic
orange
dyes,
addressing
the
growing
need
sensitive
and
selective
detection
methods
in
various
industries.
We
examine
fundamental
principles
underlying
of
these
compounds,
focusing
on
their
redox
behavior
interaction
with
electrode
surfaces.
The
covers
a
range
sensor
designs,
from
unmodified
electrodes
to
advanced
nanomaterial-based
platforms.
Chemically
modified
incorporating
polymers
molecularly
imprinted
are
discussed
enhanced
selectivity.
Particular
attention
is
given
sensors,
including
those
utilizing
carbon
nanotubes,
graphene
derivatives,
metal
nanoparticles,
which
have
demonstrated
exceptional
sensitivity
wide
linear
ranges.
potential
biological-based
approaches,
such
as
DNA
sensors
immunosensors,
also
evaluated.
Current
challenges
field
addressed,
matrix
effects
complex
samples
long-term
stability
issues.
Emerging
trends
highlighted,
development
multi-modal
platforms
integration
artificial
intelligence
data
analysis.
concludes
by
discussing
commercial
food
safety,
environmental
monitoring,
smart
packaging
applications,
emphasizing
importance
ensuring
safe
use
dyes
across
ACS electrochemistry.,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 6, 2024
The
susceptibility
of
electroanalysis
to
interference
from
various
factors
has
garnered
increasing
attention
on
designing
a
reliable
electrochemical
platform
for
multiple
metal
ions.
In
this
work,
an
on–off
ratiometric
strategy
was
proposed
using
DA-MIL-101(Fe),
where
dopamine
(DA)
served
as
internal
reference.
interaction
between
DA
molecules
and
ions
realized
dual-signaling,
enabling
the
high
recognition
large
specific
surface
area
catalytic
efficiency
MIL-101(Fe)
could
facilitate
binding
with
electron
transfer
decreased
oxidation
signal
DA,
while
current
responses
increased.
Electrochemical
analysis
different
valence
states
(Ag+,
Cd2+,
Cu2+,
Pb2+,
Bi3+,
In3+)
at
DA-MIL-101(Fe)
investigated,
calculated
energies
revealed
mechanism
phenolic
hydroxyl
group
Focusing
Pb2+
representative
target,
demonstrated
excellent
performance
by
employing
ratio,
IPb2+/IDA,
qualitative
quantitative
in
concentration
range
0.20–10.0
μM.
It
exhibited
anti-interference
capability
stability,
which
successfully
applied
detect
real
samples
satisfactory
related
standard
deviations
(RSDs)
(1.84%–5.42%).
results
verified
possibility
detection
practical
applications,
offering
promising
avenue
development
sensor.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
26(1), С. 139 - 139
Опубликована: Дек. 27, 2024
Biogenic
amines
(BAs),
produced
in
fish
and
seafood
due
to
microbial
contamination,
pose
significant
health
risks.
This
study
introduces
a
novel
ratiometric
fluorescent
probe,
synthesized
by
integrating
rhodamine
6G(R6G)
gold
nanoparticles
(AuNCs),
for
the
sensitive
specific
detection
of
BAs.
The
probe
operates
on
principle
BAs
hydrolysis,
catalyzed
diamine
oxidase,
produce
hydrogen
peroxide
(H2O2),
which
selectively
quenches
fluorescence
AuNCs
at
620
nm,
while
R6Gat
533
nm
remains
unaffected.
ratio
I620/I553
demonstrated
excellent
linearity
with
wide
dynamic
range
(1–1000
μM)
low
limit
0.1
μM.
Validation
using
grass
carp
samples
showed
high
recovery
rates
(97.57%
104.29%),
confirming
probe’s
efficacy
potential
practical
application
food
safety
monitoring.
Current Analytical Chemistry,
Год журнала:
2023,
Номер
19(10), С. 704 - 713
Опубликована: Ноя. 14, 2023
Background:
In
this
work,
the
reduced
graphene
oxide
decorated
with
gold
nanoparticles
(Au/rGO)
had
been
synthesized
on
glass
carbon
electrode
(GCE)
using
a
simple
one-step
electrochemical
method.
The
molecularly
imprinted
poly(p-aminobenzoic
acid)
(PABA)
film
was
prepared
for
analysis
of
sunset
yellow
(SY)
Au/rGO/GCE
by
electropolymerization
p-aminobenzoic
acid
(pABA)
and
SY.
Methods:
Methods,
such
as
scanning
electron
microscope
(SEM),
cyclic
voltammetry
(CV),
impedance
spectroscopy
(EIS)
were
used
to
characterize
successful
formation
films.
Results:
Under
optimized
experimental
conditions,
based
sensor
(MIP/Au/rGO/GCE)
exhibited
excellent
performance
SY,
linear
range
obtained
from
0.002
μM
8
detection
limit
0.5
nM.
responses
maintained
higher
than
93%
initial
values
after
15
days
storage.
Conclusion:
MIP/Au/rGO/GCE
has
sensitive
selective
SY
in
real
food
samples
acceptable
recoveries,
combination
Au
rGO
significantly
improved
sensitivity
proposed
due
synergistic
effect
rGO.
resulting
also
satisfactory
reproducibility
stability,
platform
could
be
further
expected
other
additives
various
electroactive
species.
In
recent
years,
owing
to
the
widespread
use
of
pesticides
in
agricultural
products,
an
increasing
concerns
have
been
arose
on
food
safety.
Therefore,
it
is
great
importance
develop
simple,
rapid,
and
effective
analytical
methods
for
sensitive
detection
pesticide
residues
samples.
this
work,
we
developed
electrochemical-surface
enhanced
Raman
spectroscopy
(EC-SERS)
sensor
rapid
acetamiprid
(AAP).
AuNPs/ITO
SERS
substrates
were
prepared
via
in-situ
electrodepositing
dense
gold
nanoparticles
(AuNPs)
indium
tin
oxide
(ITO)
electrode,
which
showed
good
homogeneity
with
a
relative
standard
deviation
(RSD)
8.9%.
With
addition
AAP
into
electrolytic
cell,
intensity
was
linearly
related
concentration
under
applied
potential
(+0.3
V).
Under
optimal
experimental
conditions,
method
exhibited
linear
range
0.05
50
μM,
limit
(LOD,
3S/M)
0.02
μM.
Finally,
confirmed
by
HPLC-MS
real
samples,
revealing
its
application
