Mass spectroscopy of laser ablated samples ionized by a microwave induced plasma and off-resonant laser radiation

The technique laser ablation of solid samples into a low pressure argon microwave induced plasma (MIP) is coupled with mass spectrometry. Additionally, an excimer laser or a dye laser are used for off-resonant and resonant ionization, respectively. It is demonstrated with copper, steel, brass, glass and ceramic samples, that, in first approximation, matrix-independent analysis is possible if internal standardization is applied