Rezumat
CZU 10;12
DOI https://doi.org/10.5281/zenodo.1053759
The paper considers both theoretical and experimental justifications of the formation of doubly charged ions (M++) of several elements via the inductively coupled plasma mass spectrometry (ICP-MS). The efficiency of the formation of both singly and doubly charged ions with the lowest value of the second ionization potential was demonstrated using the Saha equation and thermodynamic modeling. A comparison is made of the results of the theoretical and experimental works performed on a ICP-MS mass spectrometer. The accuracy of the calcu-lated results was proved and a possibility of their use for predicting the effectiveness of the formation of M++ in the ICP-MS was demonstrated.
Keywords: mass spectrometry with inductively coupled plasma, doubly charged ions, ionization efficiency, thermodynamic modeling, secondary ionization, argon plasma, second ionization potential of atoms of elements.