Signal Uniformity in an Active Two Volume Laser Ablation Cell

Laser ablation as a solid sample introduction technique has always been limited by the sample chamber employed to transport the generated aerosol to a connected ICP-MS. The plasma torch, historically, is intolerant of air in the central channel. Whilst instrumentation is improving apace, isolating the sample from air is still important. Additionally, effective ablation occurs under helium atmosphere. Both these factors mean that an isolated chamber is required. In this study, the positional variation of data quality was assessed using HelEx II cup design installed onto a Teledyne CETAC Technologies LSX-213 G2+ Solid State Laser Ablation System.