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QUICK GUIDE ICP-MS – High Resolution ICP Mass Spectrometry Thermo Scientific Products: – ELEMENT 2 – ELEMENT XR IN BRIEF… • Quantitative multi-element analysis across the periodic table (Li to U) – XSERIES 2 • Detection limits < 1 ppt in solution for most elements – ELEMENT GD • Detection limits of 0.005 ppq possible with Jet interface – NEPTUNE PLUS • Sector field technology (SF) for highest sensitivity and selectivity for interference removal • Wide range of sample introduction systems; uptake rates 20 to 1000 µL/min with Quartz or PFA inlet systems, optional Peltier cooling and aerosol desolvation • Coupling to laser ablation and LC and GC systems Basic Theory In ICP-MS a sample aerosol is transported into an argon inductively coupled plasma (ICP) ion source where it is quickly and efficiently desolvated, atomized and ion- Applications ized. The resulting ions from the ICP are Sector-field ICP-MS is used for trace and ultra trace metal extracted through a series of cones into analysis due to its high sensitivity. The second major benefit is the mass spectrometer (MS). The source its capability to remove spectral interferences by high mass and interface are kept at ground potential resolution to achieve the highest accuracy possible. The range for easy coupling of peripherals like of applications areas that SF-ICP-MS is used in is mostly HPLC, CE, GC and laser ablation. semiconductor grade chemicals, industrial research and High resolution ICP-MS uses a combination of development, as well as highly accurate geochemical analyses, magnetic and electrical sector fields for separating for example: trace analytes from interferences. Transfer optics focus the ions on the entrance slit of the analyzer. The user • Ultratrace metal analysis in high purity acids and waters selectable slit width defines the mass resolution. • High-accuracy trace metal determination in Resolution settings of 300 to 10000 are typically geochemical applications applied for the ultimate flexibility in analysis. • High-precision isotope ratios The detection system can deliver a linear response over 12 orders of • Actinide analysis for environmental radiation control magnitude enabling calibration ranges from sub-ppq to high ppm concentrations • Laser ablation in any sample analyzed. • Speciation analysis by LC-MS or GC-MS coupling Resolution = Mass of analyte Mass difference between interference and analyte peak R = m Δ m Technology • Quantitative multi-element analysis across the entire periodic table • High transmission and low background noise ensure the highest detection power of any ICP-MS with sub-ppq detection limits achievable • Maximum level of selectivity and accuracy from the use of high mass resolution • High scan speed for transient signals from e.g. laser ablation, LC, or GC • Determination of ultra-traces and major elements within a single scan, due to a fully automatic detector with > 12 orders of linear dynamic range • Easy coupling to peripherals due to grounded interface • Flat top peaks with and without interference removal for improved isotope ratio precision For more information go to www.thermoscientific.com/MaterialsScience OV52152_E 05/11M ©2011 Thermo Fisher Scientific Inc. All rights reserved.
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