Journal of the American Society for Mass Spectrometry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 25, 2024
The
elucidation
of
structural
motifs
in
extremely
complex
mixtures
is
very
difficult
since
the
standard
methods
for
are
not
capable
to
provide
significant
information
on
a
single
molecule.
best
method
analysis
ultrahigh
resolution
mass
spectrometry,
but
utilization
this
alone
does
about
details.
Here,
combination
with
separation
necessary.
While
chromatography
well-established
technique,
it
has
some
disadvantages
regard
mixtures,
as
often
no
individual
isomers
possible.
Therefore,
here
an
ion
mobility
spectrometry
evaluated.
As
sample
matrix,
crude
oil
used
because
excellent
matrix
develop
new
analytical
techniques
samples.
Crude
most
natural
known,
only
little
available
identity
or
functionalities
due
high
number
isobars.
A
lab-built
APPI/APLI-FAIMS
source
was
revised
optimize
transmission
and
follow
up
constituents
after
photoionization.
An
MS/MS
approach
using
collision-induced
dissociation
(CID)
elucidate
transmitted
isomers.
Journal of the American Society for Mass Spectrometry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 19, 2025
Accurately
assigning
formulas
to
thousands
of
peaks
generated
by
ultrahigh
resolution
mass
spectrometry
in
a
single
analysis
poses
significant
challenge,
especially
when
dealing
with
diverse
molecular
compositions
across
complex
mixtures.
This
difficulty
is
further
compounded
the
lack
an
established
universal
calibration
and
formula
assignment
method.
We
have
developed
HRMS-Viewer,
Python-based
software
tool
designed
for
processing
data
specific
petroleum
natural
organic
matter
(NOM).
The
employs
efficient,
experience-driven
approach
small
molecule
assignment,
offering
streamlined
yet
intuitive
workflow.
Key
features
include
advanced
noise
reduction,
automatic
or
manual
recalibration,
real-time
visualization
results,
options
correction.
During
workflow,
HRMS-Viewer
enables
control
critical
steps
including
peak
identification,
review.
Journal of the American Society for Mass Spectrometry,
Journal Year:
2023,
Volume and Issue:
34(8), P. 1789 - 1797
Published: July 21, 2023
In
recent
years,
various
alternatives
to
fossil
fuels
have
been
developed.
One
of
them
involves
the
production
bio-oils
from
lignocellulosic-based
biomass
through
pyrolysis.
However,
present
numerous
heteroatoms
and,
in
particular,
oxygen
atoms
that
need
be
removed
by
an
upgrading
process.
To
optimize
these
processes,
it
is
necessary
good
knowledge
composition
at
molecular
level.
This
work
aims
establish
usefulness
laser
desorption
ionization
(LDI)
and
matrix-assisted
desorption/ionization
(MALDI)
techniques
on
lignocellulosic
biomass-based
bio-oils.
Using
a
Fourier
transform
ion
cyclotron
mass
spectrometer
(FTICR
MS),
we
showed
MALDI
gives
more
information
than
LDI.
The
selectivity
series
matrices
was
investigated,
showing
some
are
selective
toward
compound
families
others
ionize
wider
range
compounds.
this
study,
nine
proton-transfer
three
electron-transfer
were
used
compared
results
obtained
Dithranol,
acetosyringone,
graphene
oxide
promising
selected
all
matrices,
giving
overall
characterization
oxygenated
classes
bio-oil.
They
allowed
many
species
covering
wide
polarity,
aromaticity,
with
homogeneous
relative
intensity
for
such
as
lignin-derivative
species,
sugars,
lipid-derivative
species.
Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
96(28), P. 11343 - 11352
Published: July 8, 2024
Modern
research
faces
increasingly
complex
materials
with
a
constant
need
for
new
analytical
strategies
that
can
provide
deeper
levels
of
chemical
insight.
Ultrahigh
resolution
mass
spectrometry
(MS),
particularly
Fourier
transform
ion
cyclotron
resonance
(FTICR)
MS,
has
provided
robust
foundation.
However,
MS
alone
offers
limited
structural
information.
Here,
we
present
the
first
implementation
and
results
from
an
FTICR
fully
integrated
dual
accumulation
analysis
gated
trapped
mobility
(gTIMS)
capability.
The
drastically
extended
charge
capacity
parallel
facilitate
mixtures.
We
achieved
high
dynamic
range
4
orders
magnitude
within
single
acquisition
event.
Simultaneously,
valuable
linear
relationship
between
TIMS
elution
voltage
reduced
was
retained
over
wide
range.
Benchmarking
instrument
performance
Suwannee
River
fulvic
acid
(SRFA)
by
variable
ramp
gTIMS
allowed
separation
unambiguous
assignment
different
state
distributions.
Application
to
bio-oils
proven
capability
distinguish
isomeric
diversity
in
these
ultracomplex
samples,
while
maintaining
expected
resolving
power
accuracy.
Valuable
information
about
molecular
distribution,
diversity,
main
differences
could
directly
be
extracted
time
classical
"dilute
shoot"
direct
infusion
experiment.
development
this
flexible
possesses
potential
significantly
change
current
landscape
high-resolution
spectrometric
mixtures
through
added
insight
complexity
afforded
TIMS.
exploration
IMS
dimension
promises
transformative
effects
across
diverse
fields
including
energy
transition,
environmental
studies,
biological
research.
Biomacromolecules,
Journal Year:
2024,
Volume and Issue:
25(10), P. 6762 - 6772
Published: Sept. 12, 2024
Nanocellulose-
and
alginate-based
hydrogels
have
been
suggested
as
potential
wound-healing
materials,
but
their
utilization
is
limited
by
the
Food
Drug
Administration
(FDA)
requirements
regarding
endotoxin
levels.
Cytotoxicity
presence
of
were
assessed
after
gel
sterilization
using
an
autoclave
UV
treatment.
A
new
fingerprinting
method
was
developed
to
characterize
compounds
detected
in
cellulose
nanocrystal
(CNC)-
cellulose-nanofiber
(CNF)-based
both
positive-
negative-ion
mode
electrospray
ionization
Fourier
transform
ion
cyclotron
resonance
mass
spectroscopy
(ESI
FT-ICR
MS).
These
biobased
used
scaffolds
for
cultivation
growth
human
dermal
fibroblasts
test
biocompatibility.
resazurin-based
assay
preferred
over
all
other
biocompatibility
methodologies
since
it
allowed
evaluation
viability
time
same
sample
without
causing
cell
lysis.
The
CNF
dispersion
6
EU
mL
RSC Advances,
Journal Year:
2023,
Volume and Issue:
13(26), P. 17727 - 17741
Published: Jan. 1, 2023
Bio-oils
are
a
renewable
alternative
resource
for
the
production
of
fine
chemicals
and
fuels.
characterised
by
high
content
oxygenated
compounds
with
diverse
array
different
chemical
functionalities.
Here,
we
performed
reaction
to
transform
hydroxyl
group
various
components
in
bio-oil
prior
characterisation
ultrahigh
resolution
mass
spectrometry
(UHRMS).
The
derivatisations
were
first
evaluated
using
twenty
lignin-representative
standards
structural
features.
Our
results
indicate
highly
chemoselective
transformation
despite
presence
other
functional
groups.
Mono-
di-acetate
products
observed
acetone-acetic
anhydride
(acetone-Ac2O)
mixtures
non-sterically
hindered
phenols,
catechols
benzene
diols.
Dimethyl
sulfoxide-Ac2O
(DMSO-Ac2O)
reactions
favoured
oxidation
primary
secondary
alcohols
formation
methylthiomethyl
(MTM)
phenols.
then
complex
sample
gain
insights
into
profile
bio-oil.
that
before
derivatisation
is
composed
4500
elemental
compositions
containing
1-12
oxygen
atoms.
After
DMSO-Ac2O
mixtures,
total
number
increased
approximately
five-fold.
was
indicative
variety
profiles
within
particular
phenols
ortho
para
substituted,
non-hindered
(about
34%),
aromatic
(including
benzylic
non-phenolic
alcohols)
(25%),
aliphatic
(6.3%)
could
be
inferred.
Phenolic
known
as
coke
precursors
catalytic
pyrolysis
upgrading
processes.
Thus,
combination
conjunction
UHRMS
can
valuable
outline
mixtures.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(17), P. 16473 - 16489
Published: Aug. 20, 2024
Bio-oils
contain
a
substantial
number
of
highly
oxygenated
hydrocarbons,
which
often
exhibit
low
thermal
stability
during
storage,
handling,
and
refining.
The
primary
objectives
this
study
are
to
characterize
the
hydroxyl
group
in
bio-oil
fractions
investigate
relationship
between
type
accelerated
aging
behavior.
A
was
fractionated
into
five
solubility-based
fractions,
classified
two
main
groups:
water-soluble
water-insoluble
fractions.
These
were
then
subjected
chemoselective
reactions
tag
molecules
containing
groups
analyzed
by
negative-ion
electrospray
ionization
21
T
Fourier
transform
ion
cyclotron
resonance
mass
spectrometry
(FT-ICR
MS).
also
experiments
characterized
FT-ICR
MS
bulk
viscosity
measurements.
Extracting
insightful
information
from
ultrahigh-resolution
data
aid
predicting
upgrading
methodologies
instability
behaviors
bio-oils
is
challenging
due
complexity
data.
To
address
this,
an
unsupervised
learning
technique,
k-means
clustering
analysis,
used
semiquantify
molecular
compositions
with
close
Euclidean
distance
within
(O/C,
H/C)
chemical
space.
combination
analysis
findings
allowed
distinctive
functionalities
across
samples
be
inferred.
Our
results
indicate
that
hexane-soluble
fraction
contained
numerous
secondary
alcohols,
while
displayed
diverse
compounds,
clustered
near
carbohydrate-like
pyrolytic
humin-like
materials.
Despite
its
high
oxygen
content,
showed
minimal
changes
aging.
In
contrast,
significant
increase
observed
materials,
specifically,
low-
high-molecular-weight
lignin
(LMWL
HMWL,
respectively).
Among
these
HMWL
exhibited
highest
after
only
4
h
behavior
attributed
increased
phenolic
groups.
Thus,
major
contributors
under
conditions.
This
highlights
crucial
role
functionality
aging,
suggesting
content
alone
does
not
necessarily
correlate
viscosity.
Unlike
other
categorization
methods
based
on
constrained
molecule
locations
van
Krevelen
compositional
space,
can
identify
patterns
inherent
unique
fingerprint
each
sample.