Abstract
Relative sensitivity coefficients (RSCs) were determined for 68 elements in inductively coupled plasma mass spectrometry (ICP-MS). It was shown that the Saha equation gives a rough description of ionization processes in ICP. A dependence of RSCs on the absolute electronegativity of atoms was found. This parameter is substantially affecting the accuracy of RSCs calculation for chemically active elements. Taking into account absolute electronegativities of the atoms for the calculation of RSCs, the ion formation processes in ICP-MS could be better described than by using first ionization potentials. The mean relative systematic error of RSCs calculation using absolute electronegativity was improved to 0.30.
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