Abstract：Iron-chromium-aluminum alloy is a vital material for electrothermal element. The content of aluminum, titanium and zirconiumin in iron-chromium-aluminum alloy is critical to its electrical and mechanical properties and should be accurately determined. The sample was dissolved with hydrochloric acid-nitric acid mixture(V∶V=4∶1). Al 308.215 nm, Ti 308.802 nm and Zr 256.887 nm were selected as the analytical spectral lines. The calibration curve was prepared by matrix matching method to eliminate the matrix effect. The determination method of aluminum, titanium and zirconium in iron-chromium-aluminum alloy by inductively coupled plasma optical emission spectrometry (ICP-OES) was established. When the mass fraction of aluminum was 0.048%-5.0%, the mass fraction of titanium was 0.006 0%-0.70% and the mass fraction of zirconium was in range of 0.042%-0.70%, the linear correlation coefficients of calibration curves were all not less than 0.999 9. The limits of detection of elements were in range of 0.001 8%-0.014% (mass fraction). The proposed method was applied for the determination of aluminum, titanium and zirconium in iron-chromium-aluminum alloy, and the relative standard deviations (RSD, n=6) were between 0.52%-1.5%. The recoveries were between 99% and 103%.
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