Laser Ablation ICP-MS

Laser Ablation ICP-MS - Laser Ablation-Inductively Coupled...

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Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) Sample Introduction System Atom Excitation Ion Generation Source - Plasma Mass to Charge (m/z) detector
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LA-ICP-MS -theconcept Laser Energy Ð Solid sample Ð Solid vaporization Ð Dissociation Ð Atomization Ð Ionization/Excitation of elements
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UV laser (226 nm) Sample
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Laser
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Ar gas
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Ar gas Vaporized sample aerosol
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Ar gas Transport tube to ICP
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Ar gas Sample Vaporized sample aerosol Transport tube to ICP
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Ar gas Sample Vaporized sample aerosol Transport tube to ICP ICP Ô Ö
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Ar gas Sample Vaporized sample aerosol Transport tube to ICP Sample crater ICP Ô Ö
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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) Sample Introduction System Atom Excitation Ion Generation Source - Plasma Mass to Charge (m/z) detector
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ICP-MS
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Plasma? Partially ionized gas Ar o , Ar + , and e - Temp: 10,000 K Three concentric quartz tube Argon plasmas are most common Ar flow rates : 10-15 L/min; Auxiliary < 2 L/min Analytical observation region (on top) Water cooled rf (radio frequency) load coil
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Fate of the Sample Aerosol Desolvation H 2 O (l) -> H 2 O (g) Ð Vaporization MX s -> MX l
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Laser Ablation ICP-MS - Laser Ablation-Inductively Coupled...

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