The determination of cadmium in environmental samples by slurry atomization graphite furnace atomic absorption spectrophotometry using platforms and matrix modification

Abstract

The conditions which allow the accurate and precise determination of cadmium in environmental samples using direct solid introduction and electrothermal atomization atomic absorption spectrometry have been investigated. Cadmium was successfully determined in three certified reference materials (an aquatic plant, olive leaves, and mussels). Utilization of platform atomization and a 0.5% solution of ammonium phosphate as matrix modifier eliminated matrix interference effects. Excellent agreement was obtained with the certified values, with precision equivalent to that found by conventional acid digestion procedures.