Abstract
The analysis of slurries by flow injection inductively coupled plasma atomic emission spectrometry (FI-ICP-AES) was investigated and the optimum spray chamber design, sample injection volume, carrier stream flow-rate and injector diameter were determined. Particular advantages were obtained by using a novel low-volume spray chamber. A 500-µl injection gave a sensitivity equivalent to that of continuous nebulisation. A torch injector tube of 3 mm internal diameter was the optimum. The analytical potential of the optimum arrangement was demonstrated by the analysis of Certified Reference Material soils SO1 and SO2 (CANMET) for Ca, Fe, Mg, Mn, Cu and V. Excellent agreement with certified values and acceptable precision (2% relative) were obtained.
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