Journal of Separation Science,
Год журнала:
2024,
Номер
47(11)
Опубликована: Май 31, 2024
An
amide‐based
covalent
organic
framework
(COF)
was
successfully
synthesized
using
the
reaction
between
1,3,5‐trimesoyl
chloride
and
ethylenediamine.
The
structure
morphology
of
COF
were
characterized
Fourier‐transform
infrared
spectra,
nuclear
magnetic
resonance
spectroscopy,
X‐ray
diffraction,
scanning
electron
microscopy,
energy‐dispersive
Brunauer‐Emmett‐Teller
surface
area
analysis.
employed
as
a
solid‐phase
extraction
adsorbent
for
sampling
preconcentration
chlorophenols
from
industrial
wastewater
samples
prior
to
high‐performance
liquid
chromatography
with
ultraviolet
detection.
experimental
parameters
influencing
efficiency
including
type
volume
eluent
solvent,
sample
solution
volume,
salt
concentration,
flow
rate,
pH
investigated
optimized
response
methodology
employing
Box‐Behnken‐design.
Under
conditions,
calibration
curves
exhibited
good
linearities
over
range
0.003–10
µg/mL
determination
coefficients
(R
2
)
ranging
0.9982
0.9999.
method's
limits
detection
ranged
0.001
0.01
µg/mL.
Good
repeatability
achieved
relative
standard
deviations
below
4.7%.
developed
procedure
utilizing
applied
determine
accurately
precisely
in
various
samples.
Talanta Open,
Год журнала:
2023,
Номер
8, С. 100262 - 100262
Опубликована: Окт. 23, 2023
A
novel
Cu-MOF/COF
hybrid
material
was
synthesized
and
applied
as
a
sorbent
for
headspace
solid-phase
microextraction
(HS-SPME)
of
polycyclic
aromatic
hydrocarbons
(PAHs)
in
soil
samples.
The
morphology
structure
the
were
characterized
using
Fourier
transform
infrared
spectroscopy,
scanning
electron
microscopy,
energy
dispersive
X-ray
microanalysis,
diffraction
analysis,
Brunauer-Emmett-Teller
method.
influential
experimental
parameters
investigated
optimized
Box-Behnken
design.
Under
optimal
condition,
proposed
method
showed
low
detection
limits
over
range
0.1-0.5
ng
g−1.
Calibration
graphs
exhibited
linearity
within
1.0
to
1000
g−1
relative
standard
deviations
ranged
from
2.9
8.4%
(n
=
6).
Successful
application
achieved
analysis
PAHs
contaminated
These
findings
highlight
effectiveness
reliability
HS-SPME
sampling
ultratrace
solid
samples
with
complex
matrices.
