Method for detecting platinum-tungsten alloy elements for jewelry

The invention relates to a platinum-tungsten alloy element detection method for jewelry, which comprises the following steps of: performing preliminary quantitative analysis on a sample by using an X-ray fluorescence spectrophotometer, and preliminarily determining the types and content ranges of main elements and impurity elements; the method comprises the following steps: performing primary detection on platinum ornaments, selecting a proper sample weighing amount according to primary detection data, dissolving the platinum ornaments by mixing aqua regia with hydrofluoric acid, completely dissolving the tungsten element into liquid, detecting by adopting an ICP spectrometer (inductively coupled plasma emission spectrometer), analyzing under the condition of optimizing instrument parameters and a calibration curve prepared by a standard solution, and determining the content of the tungsten element in the platinum ornaments. According to the method, the accurate total impurity content is obtained, the platinu