A new ICP-TOFMS. Measurement and readout of mass spectra with 30 μs time resolution, applied to in-torch LA-ICP-MS

In-torch LA-ICP-MS was implemented into an in-house-built ICP-TOFMS system. The fast data acquisition capabilities of the new configuration allowed simultaneous multi-element measurement and readout of in-torch LA-ICP-MS signals with 30μs time resolution. The measurements confirmed previously observed fine structures of in-torch generated signals and provided new insights in the dynamic processes in the plasma on a microsecond time scale. The new setup is described in detail and first figures of merit are given. Figure Time dependent multi element signal after laser ablation in the torch of an ICP-TOFMS instrument