China Nonferrous Metallurgy

Palladium resource market in China has a large demand but lack of reserves. The recovery of secondary palladium resources is of great significance to the industrial development of our country. Palladium ash is the product of palladium containing secondary resources recovery. Establishing a rapid, accurate and easy-to-master detection method provides a strong guarantee for improving palladium recovery and trade. In this paper, the sample was melt with sodium peroxide at 750±10℃, The impurities are separated after palladium complexation by diketoxime is precipitated, and then through hydrochloric acid-hydrogen peroxide resolubilization of palladium butanedione oxime precipitated，the contents of palladium were determination by inductively coupled plasma emission spectrometry (ICP-OES) under optimal operating conditions. It is selection wavelength Pd340.458nm to result computation.The results of this method are highly consistent with alkali melt-telluriumco-precipitation, acid dissolution and volumetric method. The recoveries were 98.2%~100.8% and the relative standard deviation (RSD) was 0.36%~0.80% and the measurement range was 1%~15%. This method is a simple, efficient and accurate method.