Direct determination of zinc in steel samples by electrothermal vaporization inductively coupled plasma atomic emission spectrometry

Direct determination of zinc steel samples by electrothermal vaporization inductively coupled plasma atomic emission spectrometry and furnace-fusion (FF) method, is discussed. A ICP atomic emission spectrometer, a tungsten boat furnace (TBF) atomizer, poly(tetrafluoroethylene) (PTFE) tube, hotplate, digital pipettes, and microbalance were used for the analysis. The sample amount of the steel samples was estimated by measuring the weak emission of the iron line after they were wet-digested chemically with mineral acids in a small cuvette. The net amount in the cuvette could be corrected by dividing the iron amount obtained by its known content when the iron content was known. The FF method permits standardization more easily using aqueous standard solutions.