Emission spectroscopy device, for examination of liquid samples, has a jet for delivery of a scanning laminar gas jet between excitation laser pulses to eliminate suspended plasma residues and thus improve analysis accuracy

摘要

Emission spectroscopy method for use with a liquid sample excited using an impulse laser focussed on its surface. According to the method the analysis zone (304) is scanned using a laminar gas flow (309) that has a speed and section that is sufficient to eliminate plasma residues suspended within the gas resulting from a prior laser pulse prior to the arrival of the next laser pulse. An Independent claim is made for an emission spectroscopy device.