陈蓉.电感耦合等离子体原子发射光谱(ICP-AES)法测定铸造用硅砂中的Fe2O3、Al2O3、CaO、MgO、TiO2、K2O、Na2O[J].中国无机分析化学,2019,9(2):65-68.
电感耦合等离子体原子发射光谱(ICP-AES)法测定铸造用硅砂中的Fe2O3、Al2O3、CaO、MgO、TiO2、K2O、Na2O
Silica for foundry Determination of iron oxide, aluminium oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide or sodium oxide Inductively coupled plasma atomic emission spectrometry
投稿时间:2018-12-06  修订日期:2019-02-19
DOI:doi:10.3969/j.issn.2095-1035.2019.02.015
中文关键词:  电感耦合等离子体发射光谱、 铸造用硅砂、氧化铁、氧化铝、氧化钙、氧化镁、氧化钛、氧化钾、氧化钠
英文关键词:inductively  coupled plasma  atomic emission  spectrometry silica  for foundry  Al2O3 Fe2O3 MgO  K2O,Na2O  CaO
基金项目:宁夏先进铸造技术重点实验室项目(2018001)
  
作者单位
陈蓉 宁夏共享集团股份有限公司
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中文摘要:
      建立了电感耦合等离子体原子发射光谱法测定铸造用硅砂中氧化铁、氧化铝、氧化钙、氧化镁、氧化钛、氧化钾、氧化钠的含量分析方法。研究了溶样方法的选择优化,采用硝酸,氢氟酸处理,冒高氯酸处理,元素分析线的选择,基体和共存元素的影响,在最佳的仪器分析下测定了方法的线性范围、相关系数、及检出限。用硅砂3个梯度含量的标准物质的分析结果评价方法的准确度和精密度。方法的检出限铁Fe为0.0117 ug/ml,Al为0.0321 ug/ml ,Ca为0.2730 ug/ml,Mg为0.00321 ug/ml,Ti为0.0021 ug/ml,K为0.1566 ug/ml,Na为0.00044 ug/ml。5次数据的相对标准偏差说明该方法稳定性较好。方法适用于铸造用硅砂中氧化铁、氧化铝、氧化钙、氧化镁、氧化钛、氧化钾、氧化钠的含量的测定。
英文摘要:
      A method for the determination of iron oxide, aluminum oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide and sodium oxide in foundry silica sand by inductively coupled plasma atomic emission spectrometry was established. The selection and optimization of the dissolution method were studied. The linear range of the method was determined under the optimal instrumental analysis using nitric acid, hydrofluoric acid treatment, perchloric acid treatment, elemental analysis line selection, matrix and coexisting elements. Correlation coefficient and detection limit. The accuracy and precision of the method were evaluated using the analytical results of three grades of silica sand. The detection limit of iron Fe is 0.0117 ug/ml, Al is 0.0321 ug/ml, Ca is 0.2730 ug/ml, Mg is 0.00321 ug/ml, Ti is 0.0021 ug/ml, K is 0.1566 ug/ml, Na is 0.00044 ug/ml. The relative standard deviation of the data of 5 times indicates that the method has good stability. The method is suitable for the determination of the content of iron oxide, aluminum oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide and sodium oxide in the silica sand for casting.
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