Abstract：By using dithizone CCl4 solution as extraction system, a method of graphite furnace atomic absorption spectrometry combined with droplet microextraction was established for the determination of trace cadmium in environmental water samples. Different extraction and instrumental conditions were investigated. The experimental conditions were optimized. Results indicated that the limit of detection was 0.82×10-2 for cadmium. The linear range was 0.02-0.60 ng/mL. It was found that common ions in the environmental water had no influence on the results. The method was applied to determine trace cadmium in actual water samples. The results were consistent with those obtained by other methods, and a high recovery of 95.6 %-97.9 % was obtained.
