Molecules,
Journal Year:
2024,
Volume and Issue:
29(22), P. 5331 - 5331
Published: Nov. 13, 2024
Heavy
metal
cadmium
(II)
residuals
have
inflicted
severe
damage
to
human
health
and
ecosystems.
It
has
become
imperative
devise
straightforward
highly
selective
sensing
methods
for
the
detection
of
Cd2+.
In
this
work,
a
ratiometric
benzothiazole-based
fluorescence
probe
(BQFA)
was
effortlessly
synthesized
characterized
using
standard
optical
techniques
visual
Cd2+
with
change
in
color
from
blue
green,
exhibiting
significant
Stokes
shift.
Moreover,
binding
ratio
BQFA
established
as
1:1
by
Job’s
plot
further
confirmed
FT-IR
1HNMR
titrations.
The
response
via
ICT
mechanism
DFT
calculations.
Furthermore,
limit
detecting
determined
be
68
nM.
it
is
noteworthy
that
showed
good
performance
real
water
samples,
paper
strips,
smartphone
colorimetric
identification,
cell
imaging.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 14, 2025
Hydroquinone
(HQ)
and
copper
ions
(Cu2+)
are
categorized
as
environmental
pollutants
that
severely
limited
in
water.
Designing
a
selective
assay
for
discriminating
HQ
from
its
two
isomers
the
convenient
determination
of
Cu2+
is
great
importance.
Herein,
Tb-based
metal-organic
framework
(Tb-MOF)
assembled
innovatively
into
ratiometric
fluorescence
nanoprobe
to
selectively
distinguish
subsequent
quantitative
visual
detection
Cu2+.
The
native
blue
emission
at
338
nm
used
response
signal,
while
Tb-MOF
with
green
offers
reference
signal
545
nm.
Notably,
neither
resorcinol
(RC)
nor
catechol
(CC)
exhibits
obvious
under
same
experimental
conditions,
which
enables
isomers.
Thus,
method
has
been
designed
intensity
ratio
F338/F545
readout.
redox
reaction
between
induces
quenching
no
change
Tb-MOF,
resulting
noticeable
color
variation
blue-green
via
naked
eye.
Furthermore,
sensitive
achieved
low
limit
1.67
μM
using
smartphone.
satisfactory
recoveries
good
repeatability
visualization
determined
spiked
water
samples
make
this
sensing
platform
suitable
on-site
monitoring
samples.
Foods,
Journal Year:
2025,
Volume and Issue:
14(6), P. 1070 - 1070
Published: March 20, 2025
Pesticide
residues
and
heavy
metals,
originating
from
diverse
sources
such
as
agricultural
practices
industrial
activities,
pose
substantial
risks
to
human
health
the
ecological
environment.
For
instance,
of
organophosphorus
pesticides
may
damage
nervous
system,
while
metals
mercury
cadmium
accumulate
in
living
organisms,
potentially
leading
severe
organ
damage.
The
contamination
rice
with
these
pollutants
has
become
a
critical
concern,
necessitating
development
innovative
detection
techniques
that
are
sensitive,
accurate,
rapid,
portable,
intelligent.
This
review
offers
an
in-depth
analysis
types,
sources,
risks,
impacts
pesticide
rice,
providing
comprehensive
understanding
challenges
solutions
associated
contaminants.
It
further
provides
fundamental
principles,
comparative
advantages,
technical
constraints
both
conventional
emerging
methodologies.
These
encompass
traditional
analytical
spectroscopy
chromatography,
well-established
immunoassay
systems,
well
biosensing
technologies.
discussion
is
substantiated
representative
case
studies
demonstrating
their
practical
applications
quality
assessment
safety
testing.
In
addition,
this
envisions
future
directions
for
technologies,
emphasizing
importance
miniaturization,
multiplexed
detection,
integration
nanotechnology,
real-time
monitoring
systems.
By
theoretical
foundation
advancing
food
innovation,
aims
contribute
ongoing
efforts
ensure
safety,
protect
public
health,
preserve
balance.
Biosensors,
Journal Year:
2025,
Volume and Issue:
15(4), P. 260 - 260
Published: April 18, 2025
Soil
and
sediment
contamination
with
heavy
metals
(HMs)
is
a
critical
environmental
issue,
posing
significant
risks
to
both
ecosystems
human
health.
Whole-cell
bioreporter
(WCB)
technology
offers
promising
alternative
traditional
detection
techniques
due
its
ability
rapidly
assess
the
bioavailability
of
pollutants.
Specifically,
lights-on
WCBs
quantify
pollutant
by
measuring
bioluminescence
or
fluorescence
in
response
exposure,
demonstrating
comparable
accuracy
methods
for
quantitative
detection.
However,
when
applied
soil
sediment,
signal
intensity
directly
measured
often
attenuated
interference
from
solid
particles,
leading
underestimation
bioavailability.
Currently,
no
standardized
method
exists
correct
this
attenuation.
This
review
provides
analysis
benefits
limitations
WCB
assessing
HM
sediment.
Based
on
approaches
used
address
attenuation,
correction
are
categorized
into
four
types:
assumed
negligible
method,
non-inducible
luminescent
control
addition
standard
reference
soil,
pre-exposure
bioreporter.
We
provide
comprehensive
each
method’s
applicability,
benefits,
limitations.
Lastly,
potential
future
directions
advancing
proposed.
seeks
establish
theoretical
foundation
researchers
professionals
utilizing
assessment
Chemistry - An Asian Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 28, 2025
Abstract
Glyphosate,
a
widely
used
herbicide,
has
raised
significant
environmental
and
health
concerns
due
to
its
persistence
in
food
matrices.
Accurate
sensitive
detection
methods
are
essential
for
monitoring
glyphosate
contamination
ensuring
safety.
In
this
study,
fluorescent
probe
(DSG‐Cu[II])
been
developed
the
selective
of
glyphosate.
The
fluorophore
making
is
synthesized
through
reaction
between
dansyl
chloride
glycine,
forming
(DSG)
capable
binding
copper
ions
(Cu[II]).
resulting
DSG‐Cu[II]
complex
functions
via
an
“off‐on”
fluorescence
mechanism,
wherein
competitively
displaces
Cu[II],
restoring
fluorescence.
This
approach
demonstrates
high
sensitivity
rapid
response,
with
limit
35
nM
response
time
30
s.
Furthermore,
was
successfully
applied
real
sample
analysis,
confirming
practical
applicability.
Additionally,
test
strips
incorporating
enabled
visual
detection,
highlighting
potential
on‐site
monitoring.
study
presents
efficient,
selective,
fluorescence‐based
method
contributing
improved
safety
