Determination of gadolinium and iron relative composition in gadolinium-iron alloy by inductively coupled plasma atomic emission spectrometry
A method for the determination of gadolinium and iron relative composition in gadolinium-iron alloys by inductively coupled plasma atomic emission spectrometry(ICP-AES)was established.The sample was dissolved with nitric acid solution,and Gd 342.246 nm and Fe 238.204 nm were selected as analytical spectral lines.The relative composition of gadolinium and iron in gadolinium-iron alloys was determined by ICP-AES under optimized instrument conditions.The mass concentration of gadolinium and iron had a good linear relationship with the spectral intensity of corresponding elements in the range of 10.00-19.00 μg/mL and 1.00-10.00 μg/mL,respectively,and the correlation coefficients were all 0.999 9.The detection limit was 0.072%and 0.078%,respectively,and the quantification limit was 0.24%and 0.26%,respectively.According to the established method,the relative standard deviations of determination results of gadolinium and iron relative composition were 0.21%-0.28%and 0.49%-0.71%(n=6),respectively.The recoveries of gadolinium and iron were 95.2%-103.5%and 98.4%-101.8%,respectively.This method is suitable for the determination of gadolinium and iron relative composition in gadolinium-iron alloys.
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维普
