Analysis of Copper Base Alloys by Grimm Glow Discharge-Emission Spectrometry and Effects of Coexistent Elements on Intensities of Spectral Lines

Effects of manganese and lead added to Cu-Zn alloys on the intensities of CuI (391.41 nm) and ZnI (481.05 nm) lines, and determinations of large amounts of zinc and lead in copper-base alloys were studied by using a Grimm glow lamp with anode inner diameter of 4.5 mm.Manganese and lead affect the intensities of CuI and ZnI lines; linear relations between the sputtering yield of copper and the intensity of CuI line for Cu-Zn-Mn and Cu-Zn-Pb alloys differ from that for Cu-Zn alloy, and the same are true for zinc. Furthermore, the addition of manganese to Cu-Zn alloy decreases the sputtering yield of the alloy. Zinc added to copper was determined over the concentration range 0 to 52 mass%Zn (Zn/Cu\fallingdotseq1.1) with a single working curve irrespective of the presence of manganese. The working curve of zinc for Cu-Zn-Pb alloys containing about 5 mass% of lead differs from that for Cu-Zn alloys. Lead was determined with a single working curve over the concentration range 0 to 14 mass%Pb (Pb/Cu\fallingdotseq0.2) in Cu-Zn-Pb alloys containing different concentrations of zinc. The concentration ratio of alloying element to copper must be taken as abscissa of the working curve when copper is used as an internal standard.