Aerosol extraction and the direct laser ablation ICP-MS analysis of the fine and ultrafine fractions of regolith

Aerosol digital data. Run = indicates which session analysis was undertaken. Sample = analytical medium. Regolith = broad regolith type based on regolith mapping and chemistry of the 0.45 − 2 mm fraction (Morris <i>et al.</i> 1997). Impactor = diameter of impactor (µm) used in individual run. Duration = run time in minutes. Negative concentration = value &lt; designated lower level of detection (LLD). All concentrations in ppm (parts per million).