An assessment of the accuracy of graphite rod vaporisation used for sample introduction into an axially viewed inductively coupled plasma

Abstract

The accuracy of graphite rod vaporisation (GRV) for sample introduction into an ICP is assessed. Results for the analysis of Bowen's kale obtained using the technique are compared with published values. The GRV was used with a plasma torch and plasma that is orientated axially, or end on, to the spectrometer. Values obtained in this way for the concentration of five trace elements (Ag, Cd, Cu, Mn and Pb) were found to lie in the range quoted by Bowen for other techniques. Graphite rod vaporisation into an axially orientated plasma was therefore judged to be an accurate technique.