Standardless analysis of solids by mass spectrometry with inductively coupled plasma

Resumo

The possibility of the standardless mass spectrometric analysis of the elemental composition of solids has been discussed. The effect of each stage of the laser plasma expansion on the formation of the coefficient of relative sensitivity of elements in the sample has been studied theoretically and experimentally. It has been shown that the stages of ionization and detection make the main contribution to the formation of the coefficient of relative sensitivity. It has been proposed to separate dissociation and ionization processes in time and/or in space. To compensate for the energy spread of ions at the output of the analyzer, a circuit has been proposed for aligning the energy of ions before their detection.