Preliminary results are given from an excimer 157 nm laser ablation multiple‐collector inductively coupled plasma‐mass spectrometer (LA‐MC‐ICP‐MS), used for the isotopic measurements of solid materials. Elements of geological interest with different volatilities such as Pb and U (e.g. zircon geochronology) and Cu and Zn (as examples of geochemical/biochemical tracers) were analysed. The range of ablation rates of 20‐150 nm s ‐1 enabled us to ablate the sample down to a depth of 45 μm for a 50 μm diameter pit. The Cu and Zn isotopic measurements gave values that were very stable with, on average, a 0.01 % standard error, comparable with that achieved in liquid mode measurements.
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Télouk et al. (2003) studied this question.
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