Separations,
Год журнала:
2025,
Номер
12(1), С. 14 - 14
Опубликована: Янв. 12, 2025
Sample
preparation
is
a
critical
step
in
the
analytical
process.
Apart
from
traditional
sample
cleanup
approaches,
microextraction-based
techniques
have
attracted
much
attention
recent
years
and
especially
researchers
working
analysis
of
beta-blockers.
Developing
sensitive
selective
methods
essential
for
detecting
these
compounds
complex
matrices.
The
present
review
aims
to
provide
an
overview
determination
beta-blockers
biological
samples,
covering
time
frame
last
decade.
Detailed
information
on
materials/coatings
instrumental
configurations
are
provided.
Applied Sciences,
Год журнала:
2025,
Номер
15(2), С. 646 - 646
Опубликована: Янв. 10, 2025
In
this
work,
mesoporous
silicas
with
two
types
of
structures
were
synthesized
and
functionalized
sulfonic
acid
groups:
MCM-41-SO3H
(honeycomb-like
hexagonal
structure)
MSU-2-SO3H
(three-dimensional
porous
structure
wormhole
pores).
The
materials
characterized
by
X-ray
diffraction,
transmission
electron
microscopy,
scanning
nitrogen
adsorption–desorption,
Fourier-transform
infrared
spectroscopy,
29Si
solid-state
nuclear
magnetic
resonance
elemental
analysis.
obtained
evaluated
as
sorbents
for
strong
cation-exchange
solid-phase
extraction
(SPE)
to
determine
their
efficiency
in
the
adsorption
desorption
tropane
alkaloids
(atropine
scopolamine).
loading
solvents,
volume,
analyte
concentration,
elution
volume
studied,
using
50
mg
both
materials.
Analyses
carried
out
ultra-high
performance
liquid
chromatography
coupled
triple
quadrupole
tandem
mass
spectrometry.
material
presented
highest
recovery
has
proven
be
a
promising
sorbent
SPE
atropine
scopolamine
aqueous
media.
high
degree
functionalization
accessibility
groups
target
analytes,
due
regularity
uniformity
pores,
maximize
contact
between
sorbent,
favoring
efficient
adsorption.
Chemosensors,
Год журнала:
2025,
Номер
13(2), С. 71 - 71
Опубликована: Фев. 16, 2025
Sample
preparation
is
broadly
recognized
as
the
most
critical,
time-consuming,
and
error-prone
step
of
a
bioanalytical
workflow.
Over
years,
development
pretreatment
methods
aimed
at
isolation
preconcentration
target
analytes
from
sample
matrices
has
been
an
ongoing
effort.
Recent
innovations
have
miniaturizing
to
streamline
laboratory
processes
enhance
analytical
performance.
Sorbent-based
microextraction
techniques,
including
solid-phase
microextraction,
by
packed
sorbent,
bar
adsorptive
capsule
phase
etc.,
recently
gained
attention
effective
tools
prior
gas
chromatography-mass
spectrometric
analysis.
This
article
provides
overview
GC-MS
applications
sorbent-based
techniques
published
in
last
decade
(2014–2024)
that
enable
efficient
sensitive
determination
various
compounds
biological
samples.
Bioanalysis,
Год журнала:
2025,
Номер
unknown, С. 1 - 20
Опубликована: Март 24, 2025
Bioanalytical
laboratories
face
significant
challenges
in
sample
preparation
due
to
the
complexity
of
biological
matrices
and
low
concentrations
target
analytes.
This
review
focuses
on
advances
green
(GSP)
techniques
tailored
meet
these
while
promoting
sustainability.
Innovations
sorbents,
including
metal-organic
frameworks
(MOFs),
magnetic
nanoparticles
(MNPs),
sol-gel-based
materials,
molecularly
imprinted
polymers
(MIPs),
carbon-based
natural
sorbents
like
cellulose
kapok
fiber,
have
enhanced
extraction
efficiency
selectivity.
Green
solvents
such
as
deep
eutectic
(DES),
ionic
liquids
(ILs),
supramolecular
(SUPRAs),
switchable
hydrophilicity
(SHSs)
further
reduce
environmental
impact
by
minimizing
toxic
solvent
use.
highlights
their
use
drug
analysis,
emphasizing
roles
enhancing
efficiency,
selectivity,
Recent
applications
demonstrate
integration
into
bioanalytical
workflows,
significantly
improving
analytical
performance
adhering
Analytical
Chemistry
(GAC)
principles.
It
is
anticipated
that
this
comprehensive
will
aid
scholars
formulation
selective,
rapid,
environmentally
friendly,
straightforward,
sensitive,
precise
methodologies
for
bioanalysis,
thereby
innovation
sustainability
within
analysis
protocols.
Foods,
Год журнала:
2025,
Номер
14(7), С. 1156 - 1156
Опубликована: Март 26, 2025
Rice
husk
(RH),
a
globally
abundant
agri-food
waste,
presents
promising
renewable
silicon
source
for
producing
SBA-15
mesoporous
silica-based
materials.
This
study
aimed
to
synthesize
and
bifunctionalize
using
RH
as
silica
precursor,
incorporating
sulfonic
octadecyl
groups
create
mixed-mode
sorbent,
RH-SBA-15-SO3H-C18,
with
reversed-phase
cation
exchange
properties.
The
material's
structure
properties
were
characterized
advanced
techniques,
including
X-ray
diffraction,
infrared
spectroscopy,
N2
adsorption-desorption
isotherms,
nuclear
magnetic
resonance,
electron
microscopy.
These
analyses
confirmed
an
ordered
high
specific
surface
area
of
238
m2/g,
pore
volume
0.45
cm3/g,
diameter
32
Å,
uniform
distribution,
highlighting
its
exceptional
textural
qualities.
sorbent
was
effectively
utilized
in
solid-phase
extraction
purify
29
alkaloids
from
three
families-tropane,
pyrrolizidine,
opium-followed
by
analysis
ultra-high
performance
liquid
chromatography
coupled
ion-trap
tandem
mass
spectrometry.
developed
analytical
method
validated
applied
gluten-free
bread
samples,
revealing
tropane
opium
alkaloids,
some
at
concentrations
exceeding
regulatory
limits.
findings
demonstrate
that
RH-derived
RH-SBA-15-SO3H-C18
is
viable,
efficient
alternative
commercial
sorbents
monitoring
natural
toxins
food,
offering
sustainable
solution
repurposing
waste
while
addressing
food
safety
challenges.
