| In order to improve the accuracy of impurity content analysis in nickel-platinum alloys using inductively coupled plasma atomic emission spectroscopy (ICP-AES), a comprehensive study of interference effects was conducted for Ni-5Pt, Ni-15Pt, and Ni-60Pt alloys. The research focused on the following aspects. For Pb and Sn, which are significantly affected by ICP-AES after matrix separation was employed for their determination. For elements with interference, by adjusting the concentration ratio between the matrix and the target element, the corresponding spectral lines were selected to achieve accurate detection within a defined range of impurity concentrations. This approach ensured the method's accuracy. Ultimately, the accuracy of the method was validated through the use of standard addition recovery. The detection ranges for the method were as follows: (5~50) ×10-6 for Ag and Au; (5~500) ×10-6 for Al, Co, Cr, Cu, Mg, Mn, Pd, Pb, Si, Sn, Ti, Zn and Zr; and (5~1000) ×10-6 for Fe. This method can meet the impurity analysis requirements for nickel-platinum target materials in market transactions. |