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Cloud point method was applied for the simultaneous extraction and preconcentration of trace amounts of gold and palladium. The extraction of analytes was performed in the presence of 1,8-diamino-4,5-dihydroxy anthraquinone as chelating agent and Triton X-114 as a non-ionic surfactant. After phase separation, the surfactant-rich phase was diluted with concentrated HNO₃ (65%, w/w) and the analytes concentrations were determined by inductively coupled plasma-optical emission spectrometry (ICP-OES). The variables affecting the complexation and extraction conditions were optimized and under the optimum conditions (i.e. pH 6.5, 2.2×10⁻⁴moll⁻¹ chelating agent, 0.15% (w/v) of Triton X-114, equilibration temperature 55°C, centrifuge at 3500rpm), quantitative extraction of Au(III) and Pd(II) from 100ml of the aqueous solution was performed. The calibration curves were linear in the range of 0.5–1000μgl⁻¹ …