Determination of Trace Elements in Super Alloy by ICP-MS

Abstract.

 A method is described for determination of 14 trace elements in super alloy certified reference material. Inconel 718 by ICP-MS. The interferences were investigated in detail. By using appropriate settings of the operational parameters and correcting interferences the elements without interference free isotopes were also analyzed. Non-spectral interference to the analytes was studied. No matrix separation or any other sample pretreatment but acid dissolution was made. 14 trace elements (B, Sc, Ga, Ge, In, Sn, Sb, Te, Hf, Ag, Ce, Tl, Pb and Bi) were analyzed by matrix matched standard solution calibration and using Rh as internal standard. Good agreement was achieved between the found levels and the certified values for most of the elements. The RSD (n = 4) of the determination values of Ce was lower than 20%, and RSD of the other 13 elements was lower than 10%.