Abstract：The sample was dissolved with 10 mL of hydrochloric acid (1+1) and 4 mL of nitric acid (1+1). Y 371.030 nm was selected as the analytical line. The determination method of yttrium in iron-chromium- aluminum fiber by inductively coupled plasma atomic emission spectrometry(ICP-AES) was established. The results showed that the determination results were affected by iron matrix, while the alloying elements including chromium and aluminum had no influence. The matrix effect was eliminated by preparation of calibration curve using matrix matching method. The mass concentration of yttrium in range of 0.10-2.00 μg/mL was linear to the emission intensity. The linear regression equation of calibration curve was y=2 643.3 x+1 261 with linear correlation coefficient of r=0.999 9. The detection limit of yttrium was 0.001 0 μg/mL. The content of yttrium in two samples was determined according to the experimental method. The relative standard deviation (RSD, n=11) was 2.2% and 2.5%, respectively. The recoveries were between 95% and 102%. The found results were consistent with those obtained by p-nitrochlorophosphonazo spectrophotometry.
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