Frontiers in Chemistry,
Journal Year:
2022,
Volume and Issue:
10
Published: Nov. 28, 2022
Pyrrolizidine
alkaloids
(PAs)
are
a
series
of
ubiquitous
natural
toxins
in
flowering
plants,
which
associated
with
serious
hepatic
disease
humans.
However,
the
simultaneously
fast
and
sensitive
monitoring
different
PAs
still
challenge
because
diversity
huge
amount
interference
complex
samples,
such
as
scented
tea
samples.
In
this
study,
molecularly
imprinted
solid
phase
microextraction
(MIP-SPME)
fibers
were
fabricated
by
using
multi-template
imprinting
technique
for
selective
recognition
efficient
enrichment
from
teas.
MIP-SPME
could
be
used
adsorption
ten
types
through
specific
cavity
strong
ionic
interaction,
including
senecionine,
lycopsamine,
retrorsine,
heliotrine,
lasiocarpine,
monocrotaline,
echimidine,
erucifoline,
europine
seneciphylline.
The
extraction
parameters
also
optimized
time,
elution
solvent
time.
Then,
ultra
performance
liquid
chromatography-
quadrupole-time
flight
mass
spectrometry
(UPLC-Q-TOF-MS)
coupled
method
was
developed
fast,
simple,
accurate
determination
established
validated
presented
satisfactory
accuracy
high
precision.
It
successfully
applied
simultaneous
found
most
these
suggest
cautious
use
consumers.
Advances in Sample Preparation,
Journal Year:
2022,
Volume and Issue:
3, P. 100035 - 100035
Published: July 19, 2022
Solid-phase
microextraction
(SPME)
has
become
a
powerful
sample
preparation
technique
which
allows
to
efficiently
isolate
and
enrich
analytes
from
complex
matrixes.
One
of
the
most
widespread
SPME
modes,
consists
extraction
directly
headspace
(HS)
is
equilibrated
with
sample.
In
this
sense,
HS-SPME
provides
one
best
platforms
for
preparation,
especially
analysis
volatile
semi-volatile
organic
compounds.
Furthermore,
demonstrated
be
versatile,
sensitive,
robust,
environmentally
friendly
when
applied
samples
coming
diverse
variety
fields
such
as
bioanalysis,
environmental
sciences,
food
cultural
heritage.
Moreover,
during
last
years,
implementation
dramatically
grown
along
need
monitor
systems
over
time
using
in
situ
vivo
approaches,
taking
advantage
its
noninvasive
nature.
review
article,
authors
present
fundamentals
aiming
critically
understand
advantages
limitations,
highlighting
recent
advances
published
ten
years.
To
aim,
special
sections
dealing
extractive
phase
development,
technological
relevant
applications
different
have
been
carefully
designed.
Finally,
some
thoughts
perspectives
about
future
are
also
discussed.
Small,
Journal Year:
2024,
Volume and Issue:
20(47)
Published: Aug. 16, 2024
Abstract
Metal‐organic
frameworks
(MOFs)
are
a
new
variety
of
solid
crystalline
porous
functional
materials.
As
an
extension
inorganic
materials,
it
has
made
important
progress
in
preparation
and
application.
MOFs
widely
used
various
fields
such
as
gas
adsorption
storage,
drug
delivery,
sensing,
biological
imaging
due
to
their
high
specific
surface
area,
porosity,
adjustable
pore
size,
abundant
active
sites,
modification
by
introducing
groups.
In
this
paper,
the
types
classified,
synthesis
methods
mechanisms
materials
summarized.
Finally,
application
prospects
challenges
metal‐organic
framework
biomedical
field
discussed,
hoping
promote
multidisciplinary
fields.
