Determination of free calcium oxide in steel slag by inductively coupled plasma atomic emission spectrometry after leaching with sucrose solutionChinese Full Text
TAO Jun;CHEN Jia-xi;Wuhan Iron and Steel(Group)Co.Kunming Iron ＆Steel Company;Yunnan Metallurgical Group Co.,Ltd.;
Abstract: A simple method was proposed for the determination of free calcium oxide（f-CaO）in steel slag.At room temperature,the sample was leached in 200g/L sucrose solution for 30min to liberate f-CaO from the sample and separate it from other elements and other forms of calcium.The solution then was filtered.The spectrum line with the wavelength of 393.366nm was selected as the analytical line.Calcium amount in the filtrate was determined by inductively coupled plasma atomic emission spectrometry under proper working conditions,and thus the f-CaO content in the sample was obtained.The matrix had little interference in the determination of f-CaO and the coexisting elements had almost no interference.The method was applied to the determination of the f-CaO content in steel slag samples,the measured values were consistent with those obtained by the titrimetric method,with the relative standard deviation in the range of 0.78%-1.1%.
Keywords：
inductively coupled plasma atomic emission spectrometry; steel slag; free calcium oxide（f-CaO）; sucrose;
- DOI：
10.13228/j.issn.1000-7571.2014.02.013
- Series：
- Subject：
- Classification Code：
O657.31
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