Ultra trace analysis of refractory metals by solid state mass spectrometry — A comparison of GDMS, SSMS and SIMS

Abstract

A high resolution glow discharge mass spectrometer (GDMS VG 9000) has been used to analyze tungsten and molybdenum. Detection limits have been shown to be typically of the order of 1 ng/g or better in these matrices for integration times of 60 s per element. The results demonstrate that precisions of approximately 10% can be obtained on trace concentrations at the 10 ng/g level.