As an intensity ration method of testing platinum mass fraction, GB/T 21198.2-2007 is usually used for testing platinum mass fraction. Through optimizing the test condition, standard solution and intensity integral area, platinum-palladium alloy samples with palladium mass fraction of about 80%, 40% and 20% were detected using ion emission spectrometer (ICP-AES). Meanwhile, comparing our test results with design values and test data of other lab, the effect of the optimized method and the principle of the method were discussed in us paper. The results show that the stability and accuracy of the test results were better using the optimized method. Therefore, we can draw the conclusion that the optimized method is suitable for the platinum-palladium alloy jewelry samples with high palladium content. |