Time-resolved studies of particle effects in laser ablation inductively coupled plasma-mass spectrometry : Part 2. Investigation of MO + ions, effect of sample morphology, transport gas, and binding agents

Time resolved signals in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) are studied to determine the influence of experimental parameters on ICP-induced fractionation effects. Differences in sample composition and morphology, i.e., ablating brass, glass, or dust pellets, hav...

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Bibliographic Details
Published in:Journal of analytical atomic spectrometry 2008, Vol.23 (3), p.336-341
Main Authors: Perdian, D. C., Bajic, Stanley J., Baldwin, David P., Houk, R. S.
Format: Article
Language:English
Subjects:
Inductively coupled plasma
Laser ablation
Morphology
Pellets
Spectrometry
Spectroscopy
Spikes
Time resolved
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Summary:Time resolved signals in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) are studied to determine the influence of experimental parameters on ICP-induced fractionation effects. Differences in sample composition and morphology, i.e., ablating brass, glass, or dust pellets, have a profound effect on the time resolved signal. Helium transport gas significantly decreases large positive signal spikes arising from large particles in the ICP. A binder for pellets also reduces the abundance and amplitude of spikes in the signal. MO+ ions also yield signal spikes, but these MO+ spikes generally occur at different times from their atomic ion counterparts.
ISSN:0267-9477
1364-5544
DOI:10.1039/B710075B