Effect of Nickel on Emission Intensities of Volatile Elements with High Excitation Potential in Direct-Current Arc

Abstract

In this study the effect of nickel as a modifier on the spectral line intensities of As, Sb and Hg in d.c. arc was investigated. As a result of nickel addition into the sample, spectral line intensities of the elements decreased at low current strengths and increased at higher current strengths. It was concluded that the effect of nickel on As, Sb and Hg is due to the formation of thermally stable compound between nickel and the element to be determined.