Foods,
Journal Year:
2025,
Volume and Issue:
14(2), P. 275 - 275
Published: Jan. 16, 2025
A
rapid
and
efficient
ultrasound-assisted
extraction
(UAE)
procedure
followed
by
inductively
coupled
plasma
mass
spectrometry
(ICP-MS)
was
developed
for
the
determination
of
14
rare
earth
elements
(REEs)
(La,
Ce,
Pr,
Nd,
Sm,
Eu,
Gd,
Tb,
Dy,
Ho,
Er,
Tm,
Yb,
Lu),
along
with
yttrium
(Y)
scandium
(Sc),
in
coffee
samples.
The
method
validated
using
certified
reference
material
(NIST
SRM
1547),
recovery
tests
at
four
fortification
levels,
comparisons
microwave-assisted
digestion
(MAD).
Excellent
accuracy
precision
were
achieved,
rates
ranging
from
80.1%
to
112%
relative
standard
deviations
(RSD%)
below
14%.
Limits
detection
(LODs)
ranged
0.2
ng/kg
(Yb)
0.16
µg/kg
(Nd).
Total
REE
concentrations
varied
between
8.3
1.1
mg/kg,
highest
individual
mean
(µg/kg)
observed
Ce
(11.7),
La
(6.0),
Sc
(4.7).
lowest
Ho
(0.16),
Lu
(0.066),
Tm
(0.063).
Multivariate
analysis
profiles
92
samples
collected
Serbia
revealed
clear
distinctions
ground
roasted
instant
coffees,
as
well
different
surrogate
blends.
This
study
indicated
that
coffee’s
geographical
origin
not
possible
due
diverse
types,
blends,
additives.
However,
differences
suggest
potential
classification
based
on
variety.
REEs
pose
a
negligible
health
risk
consumers,
HI
values
4.7
×
10−8
6.3
10−6
TCR
2.6
10−14
3.5
10−12.
Analytical Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Analytical
chemistry
demands
precise
sample
preparation
methods
to
ensure
accurate
qualitative
and
quantitative
determinations,
especially
those
capable
of
clean-up
preconcentration
target
analytes.
