An approach to the reconstruction of true concentration profile from transient signal in spatially resolved analysis by means of laser ablation ICP MS

Abstract

A transient analytical signal caused by continuous ablation with moving (line scan) or permanent (depth profiling) beam location was approximated by means of superposition of single-shot responses. The evolution of the parameters of single-shot response was used to reveal the true concentration profile of spatially inhomogeneous samples. The role of an ablation cell as an integrator of ablation shots has been considered and the effect of ablation cell volume on the analytical characteristics has been elucidated.