Comparison of photographic and photoelectric detection for multi-element analysis by inductively coupled plasma atomic-emission spectrometry

Abstract

The relative performances of two detecting and recording systems used in inductively coupled plasma atomic-emission spectrometry for multi-element analysis are compared. Whereas the more generally used scanning monochromator system has superior sensitivity and precision, the spectrographic system incorporating a computer-controlled microdensitometer provides a permanent record of the spectrum, requires no pre-selection of spectral lines, has a better ability to identify correctly emission lines and is more economic in terms of sample volume and time. The merits of both approaches are discussed in relation to multi-element analysis of diverse materials.