Time-resolved studies of particle effects in laser ablation inductively coupled plasma-mass spectrometry

TitleTime-resolved studies of particle effects in laser ablation inductively coupled plasma-mass spectrometry
Publication TypeJournal Article
Year of Publication2008
AuthorsPerdian DC, Bajic SJ, Baldwin DP, Houk RS
Journal TitleJournal of Analytical Atomic Spectrometry
Volume23
Pages336-341
Date PublishedMar
Type of ArticleArticle
ISBN Number0267-9477
Accession NumberISI:000254354400005
KeywordsAEROSOLS, CARRIER, DROPLETS, ELEMENTAL FRACTIONATION, GLASS SAMPLES, LA-ICP-MS
Abstract

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.

DOI10.1039/b710075b
Alternate JournalJ. Anal. At. Spectrom.