Application Spotlight
Table 1. Comparison of Instrument Detection Limits with and
without the IsoMist XR
Element IDL without IsoMist (ppb) IDL with IsoMist at 5 °C (ppb)
Ag 1.00 0.50
Al 1.00 0.50
As 3.00 1.00
Ba 0.90 0.40
Be 0.10 0.09
Cd 1.00 0.50
Co 1.00 0.70
Cr 1.00 0.40
Cu 2.00 0.70
Fe 2.00 0.90
Mg 1.00 0.50
Mn 0.90 0.30
Mo 1.00 0.50
Ni 2.00 0.90
Pb 3.00 1.00
Sb 3.00 1.00
Se 5.00 2.00
Tl 2.00 1.00
Zn 1.00 0.50
Figure 7. Washout Comparison: Helix Vs. non-GE
In addition to the washout advantage of the Helix, the IsoMist XR
incorporates a proven cyclonic spray chamber design. Compared
to a Scott type spray chamber, cyclonic spray chambers are more
sensitive and have better washout. Figure 8 compares the washout
performance of the IsoMist XR to the Scott style spray chamber of the
Agilent 7700 ICP-MS. Both spray chambers were run on the same
Agilent 7700 instrument and set to 2°C. The IsoMist XR shows five
orders of washout by the third rinse cycle whereas the Agilent Scott
style requires five rinse cycles to reach the same level of washout.
Figure 8. Washout Comparison: IsoMist XR Vs. Agilent Scott style spray chamber
Summary
The IsoMist XR is an elegant, compact, stand-alone system resistant
to attack from acids and solvents commonly used in ICP analysis.
With varying sample types and laboratory conditions the ability to
set a stable controlled spray chamber temperature is essential for
optimum ICP results. Whether you are dealing with environmental
samples, precious metals, low sample volume or volatile organics
the IsoMist XR enhances the sample introduction environment to
provide the conditions necessary for accurate and reproducible
measurements for any ICP application. The compact design and
customized interface kit allow the IsoMist XR to be compatible with
virtually any ICP-OES or ICP-MS.
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