Abstract: Determination of As, Sn, Sb, Pb and Bi in Steels and Super Alloys by ICP-MSSun Jing;Zhang Hongdu;Zhang Gongshu(Institute of Metal Research, Chinese Academy of Sciences,Sbenysng 110015,China)Abstract:A procedure for determinating trace elements(AS,Sn,Sb,Pb,Bi)in steels and alloys by ICP-MS is described. Some experiments,such as the introduction of internal standard in to neglect the matrix suppression,the seperation and the preconcentration to improve the determination limits and the mathematical correction to eliminate spectral and other interference on As determination have been conducted.Several reference specimens were analysed by this method, and the satisfactory results which coincides with certified value in RSD≤8% were obtained.Therefore,it could suggest an accurate and fast method for measuring the five detrimental trace elements in practice.Keywords:ICP-MS, trace elements, steels and alloys