High-Resolution
Continuum
Source
AAS (HR-CS
AAS) covers
the complete
spectral
range
from the
near vacuum-UV
to the
near infrared
with a
single
continuum
source,
providing
innovative
capabilities.
For the
first
time,
genuine
sequential
multi-element
analysis
is implemented
in AAS
without
the need
for a
multitude
of different
light
sources.
contrAA®
is closing
the gap
between
ICP and
AAS! At
first
glance: Unique
Flexibility
The
xenon
short-arc
lamp as
a continuum
source
is ideal
for any
element
to be
analyzed.
No matter
how frequently
or seldom
you have
to determine
an element,
the HR-CS
AAS instrument
is immediately
ready
for measurement.
You have
every
freedom
for line
selection,
as the
source
covers
the entire
continuous
wavelength
range.
All absorbing
atom lines
are immediately
available,
irrespective
of the
emission
properties
of the
HCL (such
as windows
transmissive
to UV
or visible
radiation).
In addition,
several
new types
of lines
can be
used for
analysis. Immediate
Readiness
for Measurement
The
immediate
readiness
for measurement
provided
by HR-CS
AAS is
due to
the fact
that the
lamp needs
no fixed
warm-up
time to
avoid
output
drift.
Innovative
correction
algorithms
continuously
compensate
any drift
or fluctuation
of the
spectrometer
including
the source. Improved
Performance
HR-CS
AAS features
an improved
signal-to-noise
ratio
and markedly
better
detection
limits.
This is
due to
the higher
radiation
density
of the
Xe continuum
source
compared
to HCLs,
and the
enormously
increased
quantum
efficiency
of a CCD
semiconductor
detector
compared
to the
photomultiplier
tube commonly
used in
line-source
AAS (LS
AAS).
HR-CS
AAS is
the first
technique
that c
an efficiently
correct
spectral
interferences
in flame
AAS by
structured
flames
or molecule
structures.
This provides
improved
simultaneous
background
correction,
and capabilities
to correct
spectral
interferences
to increase
the accuracy
of analytical
results. contrAA®
is closing
the gap
between
ICP and
AAS! As
robust
and interference-free
as a traditional
AAS system,
yet the
variety
and speed
of the
information
is comparable
to that
of an
ICP -
a combination
which
will satisfy
all future
requirements!
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