Abstract :
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been successfully applied to quantitatively
map the lateral elemental distribution of trace elements in multi-phase magnesium-based alloys. A lateral resolution of 32 mm
was achieved with limits of detection in the lower mg kg 1 range for Ti, Cr, Mn, Fe, Co, Ni, and Cu in such materials.
Quantification of elements by LA-ICP-MS was carried out using a sum normalization calibration procedure. Multi-element
mappings of an area of 350 mm 350 mm were performed by LA-ICP-MS and results for the main elements Mg, Al, and Zn
were compared to electron probe microanalysis (EPMA) measurements of the same sample area. The agreement for Mg was
2.2% between the two techniques. The influences of the laser parameters, like repetition rate and laser spot size were studied and
the conditions were optimized for single spot analysis to achieve high lateral resolution capabilities
