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. www.geicp.com Glass Expansion Newsletter | Issue 42 4
GE Newsletter February 2017
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