Abstract
Laser microprobe mass spectrometry with time-of-flight analyser is evaluated as a tool to perform speciation of chromium, nickel and lead compounds in solids with a lateral resolution in the μm range. Commercial instruments irradiate the sample at 266 nm while a tunable dye laser is fitted to some experimental set-ups. The analytical merits of both approaches are surveyed and their application to selected test cases in the field of environment and biological tissue analysis at the sub-cellular level is presented. A comparison between TOF LMMS and μ-Raman for the speciation of given components in large industrial airbone particles is discussed.
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