|
|
|
|
|
|
|
|
The DC Arc technique has
been relied upon for decades as a tool for the direct
analysis of a wide range of solid materials. The earliest
systems, many of which are still in use today, were photographic
plate spectrographs. These systems offered the advantage
of providing a permanent photographic record a sample?s
spectrum, but also carried with it the cumbersome need
to view and interpret photographic plates. These early
generation instruments were replaced, first by PMT?based
simultaneous spectrometers and then CID based DC Arc spectrometers,
each with their own strengths and weaknesses.
The Prodigy DC Arc is state-of-the-art DC Arc spectrometer
that offers many advantages over all of its predecessors.
|
|
|
|
|
|
|
The Prodigy DC Arc stand is a significant improvement
over the original "Spex" stand that was used
in earlier DC Arc instruments. This user-friendly new
arc stand incorporates a counter electrode that simply
rotates out of the way to facilitate installation of
new sample electrodes and then rotates back into position
for the next sample.
This new arc stand also features a current-stabilized
power supply for enhanced stability. A Stallwood Jet
is available for reduction of CN band emission when
needed.
|
|
|
|
|
Why choose DC Arc for Elemental
Analysis?
For a few simple reasons, DC Arc is revered by those who
use it. The reasons include: |
|
|
|
|
|
The Echelle Optical System
The polychromator used in Prodigy DC Arc is the same long
focal-length Echelle spectrometer used in the Prodigy
ICP product line. This spectrometer provides the DC Arc
user with analytical capabilities which have never before
been available to this community. Capabilities such as:
|
|
|
Speed of analysis
- Measure all elements in 1 burn in under 60 seconds
Full wavelength coverage with no interorder overlaps
- Measure wavelengths from 175 nm to 900 nm
Fewer spectral interferences
- State-of-the-art L-PAD detection system is 4 times
larger than earlier detectors eliminating interorder
overlap
True simultaneous integration for every wavelength
- Simultaneous background correction
- Superior internal standardization capability
- Analytical line averaging capability for superior
accuracy
- Simultaneous measurement of strong and weak emission
lines with no need to alter resolution
- Availability of a user selectable resolution option
|
|
|
|
The Echelle Optical System
The polychromator used in Prodigy DC Arc is the same long
focal-length Echelle spectrometer used in the Prodigy
ICP product line. This spectrometer provides the DC Arc
user with analytical capabilities which have never before
been available to this community. Capabilities such as:
|