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Journal of Undergraduate Research

Keywords

velocity determination, metastable calcium ions, high-resolution diode laser spectroscopy, ICPMS

College

Physical and Mathematical Sciences

Department

Chemistry and Biochemistry

Abstract

Inductively coupled plasma mass spectrometry (ICPMS) is a useful tool for trace chemical analysis. However, instrument response to the analyte changes with increasing concentration of other elements in solution. This change in response due to matrix elements lowers the accuracy of ICPMS. Most of the matrix effects occur in the vacuum interface between the plasma torch and the mass spectrometer. My goal in this research project was to map the temperatures and velocities of analyte inside the ICPMS interface and look for changes with changing matrix concentration. Knowing where and how changes occur would point to why matrix effects happen and lead to a way to eliminate them.

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