Chemistry - A European Journal,
Journal Year:
2024,
Volume and Issue:
30(44)
Published: May 27, 2024
The
enhancement
of
detection
sensitivity
in
microfluidic
sensors
has
been
a
continuously
explored
field.
Initially,
many
strategies
for
improvement
involved
introducing
enzyme
cascade
reactions,
but
enzyme-based
reactions
posed
challenges
terms
cost,
stability,
and
storage.
Therefore,
there
is
an
urgent
need
to
explore
enzyme-free
amplification
methods,
which
are
crucial
expanding
the
application
range
improving
stability.
Metal
or
metal
compound
nanomaterials
have
gained
great
attention
exploitation
due
their
ease
preparation,
storage,
lower
cost.
unique
physical
properties
metallic
nanomaterials,
including
surface
plasmon
resonance,
surface-enhanced
Raman
scattering,
metal-enhanced
fluorescence,
infrared
absorption,
contribute
significantly
enhancing
capabilities.
metal-based
catalytic
exemplified
by
Fe
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
It
is
still
challenging
to
perform
a
high-throughput
digestion
on
limited
amounts
of
sample
prior
elemental
analysis
by
atomic
spectrometry.
Herein,
photochemical
reactor
consisting
quartz
tube
inserted
into
low-pressure
mercury
lamp
was
used
fabricate
flow
droplet
photodigestion
(FD-PD)
device
for
the
small
samples.
A
mixture
containing
20
μL
blood
sample,
H2O2,
and
10
HNO3
pumped
passed
through
before
its
online
hydride
generation
fluorescence
spectrometry
(HG-AFS).
The
developed
provides
significantly
higher
oxidation
capability
than
conventional
ultraviolet
(UV)
since
vacuum
UV
irradiation
below
200
nm
from
directly
irradiates
samples
with
high
transmittance,
enabling
complete
within
2
min.
Compared
methods,
proposed
method
retains
several
unique
advantages
throughput
(57
pcs
h–1),
lower
mineral
acid,
oxidant
consumption,
shorter
time,
facilitating
painless
children.
Limits
detection
(LODs)
0.25
0.15
μg
L–1
were
obtained
As
Hg,
respectively,
precisions
(relative
standard
deviations
(RSDs),
n
=
11,
2.0
L–1)
better
4%.
practicality
FD-PD-HG-AFS
confirmed
detecting
Hg
in
one
two
urine
certified
reference
materials
(CRMs),
as
well
children's
satisfactory
recoveries
(93%–109%).
Foods,
Journal Year:
2023,
Volume and Issue:
12(15), P. 2868 - 2868
Published: July 28, 2023
Food
safety
is
a
significant
issue
that
affects
people
worldwide
and
tied
to
their
lives
health.
The
of
pesticide
residues
in
food
just
one
many
issues
related
safety,
which
leave
crops
are
transferred
through
the
chain
human
consumption.
Foods
contaminated
with
pose
serious
risk
health,
including
carcinogenicity,
neurotoxicity,
endocrine
disruption.
Although
traditional
methods,
gas
chromatography,
high-performance
liquid
mass
spectrometry,
can
be
used
achieve
quantitative
analysis
residues,
disadvantages
these
techniques,
such
as
being
time-consuming
costly
requiring
specialist
staff,
limit
application.
Therefore,
there
need
develop
rapid,
effective,
sensitive
equipment
for
food.
Microfluidics
rapidly
emerging
number
fields
due
its
outstanding
strengths.
This
paper
summarizes
application
microfluidic
techniques
pyrethroid,
carbamate,
organochlorine,
organophosphate
pesticides,
well
commercial
products.
Meanwhile,
study
also
outlines
development
microfluidics
combination
3D
printing
technology
nanomaterials
detecting
