Method for determination of silicon content in ferro-aluminum manganese

The invention provides a method for determination of silicon content in ferro-aluminum manganese, comprising the following steps: dissolving a sample to be tested with hydrochloric acid and nitric acid, introducing the solution into an inductively coupled plasma atomic emission spectrograph, and automatically calculating and displaying the concentration of silicon in the sample of ferro-aluminum manganese according to the standard working curve for silicon stored in the spectrograph. The method of the invention implements the working curves comparison and automatic analysis and verification with the inductively coupled plasma atomic emission spectrograph, so that the working process is greatly simplified with high analysis speed and high accuracy. The standard working curve for calibration of silicon solution is automatically drawn by an analysis software, and the linear correlation coefficient between the sample of ferro-aluminum manganese and the standard working curve is greater than 99.9% so as to provide