Sample introduction using laser ablation and are and spark ablation is reviewed. Few references were found in the literature on the use of spark or are ablation as a sample introduction technique into the ICP-MS and emphasis is therefore placed on the use of laser ablation sampling, particularly for Inductively Coupled Plasma Mass Spectrometry (ICP-MS) detection; however, many of the principles can also be applied to optical emission detection. The applications of the techniques are described, with particular emphasis on micro-sampling of geological materials. (C) 1999 Elsevier Science B.V. All rights reserved.