Brazilian Journal of Analytical Chemistry,
Journal Year:
2022,
Volume and Issue:
unknown
Published: July 11, 2022
The
laser
ablation
inductively
coupled
plasma
mass
spectrometry
(LA-ICP-MS)
technique
is
considered
versatile
for
multi-elemental
analysis
and
imaging
because
it
easy
to
handle,
compatible
with
different
types
of
solid
samples,
requires
minimal
sample
preparation,
provides
high
spatial
resolution
sensitivity.
One
the
challenges
obtain
accurate
precise
information
elements
distribution
in
sample,
so
optimization
(LA)
parameters
essential.
In
this
context,
study
aimed
optimize
LA
direct
speleothem
samples.
Laser
intensity,
frequency,
spot
diameter
were
evaluated
through
multivariate
experimental
design
multi-response
data,
influence
scan
speed
use
44Ca
as
an
internal
standard
(IS)
qualitative
image
66Zn,
137Ba,
55Mn,
57Fe,
88Sr,
60Ni,
26Mg
also
evaluated.
revealed
positive
interactions
between
evaluated,
i.e.,
greater
diameter,
analyte
signal
and,
thus
Therefore,
90%
20
Hz
repetition
rate,
100
µm
selected.
evaluation,
images
obtained
40
s-1
very
similar
all
isotopes.
IS
did
not
impact
images.
can
provide
important
about
formation
paleoclimate
changes.
Green Analytical Chemistry,
Journal Year:
2022,
Volume and Issue:
3, P. 100036 - 100036
Published: Oct. 1, 2022
The
global
concern
about
the
fate
of
plastic
particles,
including
microplastics
(MPs)
and
nanoplastics
(NPs),
in
aquatic
ecosystems
has
undoubtedly
grown
as
million
tons
polymeric
fragments
are
released
oceans
an
annual
basis.
ability
these
items
being
transferred
into
several
combination
with
their
to
absorb
organic
or
inorganic
pollutants
onto
surface,
raises
need
for
a
sufficient
monitoring
MPs/NPs
complex
environmental
matrices.
In
frame
these,
microscopic
techniques
considered
ideal
tools
critically
assist
other
analytical
due
fast-screening
character
even
complete
detailed
analysis
particles
some
cases.
light
above,
present
review
discusses
group
used
isolated
from
samples
most
likely
be
important
future
actions,
emphasizing
on
operating
fundamentals,
merits
limitations.
Moreover,
highlighted
green
particles/fragments
minimum
reagents,
solvents,
energy
required
implementation
such
kind
analysis.
Finally,
effective
spectroscopic
ones
also
presented.
RSC Advances,
Journal Year:
2022,
Volume and Issue:
12(25), P. 16301 - 16309
Published: Jan. 1, 2022
One
of
the
main
aims
green
analytical
chemistry
(GAC)
is
reduction
solvents
and
chemicals
consumed.
Recycling
mobile
phase
in
chromatographic
techniques
provides
an
efficient
way
to
implement
GAC
principles.
However,
this
not
easy
job,
particularly
case
gradient
mode.
Analysis
multi-pharmaceuticals
for
same
manufacturer
using
one
system
dramatically
reduces
consumed
solvents,
time,
cost
pharmaceuticals
analysis
quality
control
laboratories.
This
work
attempt
reduce
effort
needed
several
dosage
forms
produced
by
manufacturer.
Our
novel
RP-HPLC
method
able
separate
quantify
a
tertiary
mixture
piracetam,
ketoprofen
omeprazole
manufacturers.
The
analyst
can
easily
three
drugs
run
elution
mode
methanol
water
(from
50%
85%
ten
minutes)
with
flow
rate
1.5
mL
min-1
on
non-polar
C18
column.
Suitable
dilutions
were
done
working
solution
mixed
pharmaceutical
formulations
prior
analysis.
procedure
will
save
time
money
during
calibration
ranges
are
(5-25),
(5-25)
(3-20)
μg
mL-1
studied
drugs.
International
Council
Harmonization
(ICH)
procedures
followed
validation
process
results
evaluated
comparison
official
HPLC
methods,
where
no
noteworthy
differences
found.
profile
pictograms
AGREE
Green
Analytical
Procedure
Index
(GAPI)
approaches
proved
eco-friendly
character
simultaneous
quantitative
Stimulan®
Hyposec®
capsules,
Ketolgin®
tablets
from
Amoun
Pharmaceutical
Company,
Egypt,
be
accomplished
via
method.
Also,
Memoral®
ampoules,
Topfam®
tablets,
Gastroloc®
capsules
Sigma
Industries,
could
analyzed
simultaneously.
Omez®
Ketogesic®
Pharaonia
Pharmaceuticals,
determined
simultaneously
too.
Applying
method,
significant
total
assured
as
required
amount
solvent
noticeably
decreased
when
performing
multi-analyses
single
component
Journal of Analytical Atomic Spectrometry,
Journal Year:
2022,
Volume and Issue:
37(11), P. 2207 - 2281
Published: Jan. 1, 2022
This
review
covers
advances
in
the
analysis
of
advanced
materials,
metals,
fuels
and
lubricants,
nanostructures,
ceramics,
refractories,
organic
inorganic
chemicals,
catalysts
nuclear
materials
by
a
range
techniques
including
X-ray,
ICP,
LIBS,
mass
spectrometry,
synchrotron-based
techniques,
plus
non-destructive
ablation
surface
techniques.
Journal of Analytical Atomic Spectrometry,
Journal Year:
2025,
Volume and Issue:
40(3), P. 665 - 678
Published: Jan. 1, 2025
This
review
provides
a
comparatively
comprehensive
and
systematic
introduction
to
recent
developments
in
chemical
composition
imaging
based
on
LIBS,
with
focus
the
principle,
operation,
development.
The Analyst,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
High
accuracy
can
be
achieved
using
matrix-matched
standards
and
high
precision
is
ensured
by
averaging
signals
from
lines
randomly
located
on
the
surface
of
standard.
Applied Surface Science,
Journal Year:
2023,
Volume and Issue:
631, P. 157547 - 157547
Published: May 18, 2023
In
this
work,
we
study
the
mechanism
of
implantation
process
two-dimensional
molybdenum
disulfide.
We
proposed
oxidation
scheme
and
investigated
changes
in
geometry
MoS2
layer,
as
well
HOMO
LUMO
orbitals
location
using
Density
Functional
Theory
technique.
found
that
oxygen
was
incorporated
into
structure
MoS2/MoO3
heterostructure
created.
The
effect
presence
Secondary
Ion
Mass
Spectrometry
technique
with
atomic-resolution
depth
profiles.
trioxide
confirmed
Raman
spectroscopy.
successful
allowed
to
obtain
a
stable
conductive/insulating
promising
properties.
Mass Spectrometry,
Journal Year:
2024,
Volume and Issue:
13(1), P. A0142 - A0142
Published: Feb. 9, 2024
Among
the
most
typical
posttranslational
modifications
is
glycosylation,
which
often
involves
covalent
binding
of
an
oligosaccharide
(glycan)
to
either
asparagine
(N-linked)
or
a
serine/threonine
(O-linked)
residue.
Studies
imply
that
N-glycan
portion
glycoprotein
could
serve
as
particular
disease
biomarker
rather
than
protein
itself
because
N-linked
glycans
have
been
widely
recognized
evolve
with
advancement
tumors
and
other
diseases.
N-glycans
found
on
sites
especially
significant.
Since
play
clearly
defined
functions
in
folding
proteins,
cellular
transport,
transmission
signals,
them
linked
several
illnesses.
However,
these
N-glycans'
production
not
template
driven,
they
substantial
morphological
range,
rendering
it
difficult
distinguish
species
are
relevant
biology
medicine
using
standard
techniques.
Mass
spectrometry
(MS)
techniques
emerged
effective
analytical
tools
for
investigating
role
glycosylation
health
illness.
This
due
developments
MS
equipment,
data
collection,
sample
handling
By
recording
spatial
dimension
glycan's
distribution