Abstract：The sample was dissolved with hydrochloric acid and nitric acid. Then the mixture of sulfuric acid and phosphoric acid was added. During fuming, nitric acid was dripped to completely dissolve the carbides. The standard solution series were prepared by matrix matching method to eliminate the influence of matrix effect. W 207.911nm, Ni 231.604nm, Fe 259.940nm and V 311.071nm were selected as analytical lines for the determination of tungsten, nickel, iron and vanadium in cobalt chromium tungsten alloy by inductively coupled plasma atomic emission spectrometry (ICP-AES). When the mass fraction of tungsten was in range of 0.1%-30%, and the mass fraction of nickel, iron and vanadium was in range of 0.1%-10%, the mass concentration of each element showed good linearity to the corresponding emission intensity. The linear correlation coefficients of calibration curves were higher than 0.9997. The detection limits of elements in this method were between 0.0008% and 0.0033% (mass fraction). The proposed method was applied for the determination of tungsten, nickel, iron and vanadium in two cobalt chromium tungsten alloy samples. The relative standard deviations (RSD, n=6) of determination results were between 1.0% and 1.9%.The samples were also determined by microwave digestion-inductively coupled plasma atomic emission spectrometry for comparison, and the found results were basically consistent.
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