1986 Volume 35 Issue 4 Pages 406-408
Determination of palladium in the presence of chloride ion was studied by the potentiometric titration method. A gold-plated platinum electrode was used as the indicator electrode. The recommended procedure is as follows : Place the sample solution into a 200 ml beaker. Evaporate it to dryness on a water bath. Add 1 ml of hydrochloric acid (1+4) and water, and then dissolve it on a water bath. After cooling, dilute it to about 150 ml with water and titrate it with 0.02 M potassium iodide solution. This method was applied. to the determination of palladium in the sodium tetrachloropalladate solution and the palladium carbon as catalyst. The results are in good agreement with the values obtained by the gravimetric method using potassium iodide, and the relative standard deviation is less than 0.5%.
