基于LIBS技术的钢水成分定量分析的优化  

Quantitative Analysis of the Optimization of the Molten Steel Composition Based on the LIBS

作　　者：马翠红[1] 李曼[1] 杨友良[1] 

机构地区：[1]河北联合大学电气工程学院,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2014年第4期38-41,共4页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：应用激光诱导击穿光谱技术测量钢水的成分,用内标法对钢水中的Mn进行定量分析。为了使定量分析的结果更精确,定量分析时分析线和内标线最好均为原子线或离子线对。依据谱线的选取原则,选取基体元素FeI432.5和FeII495.5作为内标元素的谱线,选取MnI403.3.和MnII438.1作为分析元素的谱线。在建立定标曲线时,分别将原子线与离子线配成线对,原子线与原子线配成线对,离子线与离子线配成线对建立相应的定标曲线,从定量分析的结果得知相对误差从前者的1.01%~1.25%,降低到后来的0.29%~0.77%。结果证明,该谱线选取方法使定量分析的结果得到了优化。Application of laser induced breakdown spectroscopy to measure the composition of molten steel, Using internal standard method of quantitative analysis of Mn content in molten steel. In order to make the quantitative analysis results more accurate, Quantitative analysis of analysis line and internal standard line is best for lines to atoms, or ions. Based on the principles of the selection of spectral lines, Selection of matrix elements？ FeI432.5and Feii495.5 as internal standard element line. When establishing calibration curve, using a pair of atoms and ions line, a pair of atoms and atoms line, and a pair of ions and ions line to Set up a corresponding calibration curve,learn from the results of the quantitative analysis of relative error from the former 1.01%- 1.25%, and decreased to 0.29%- 0.77% of later. Results show that the spec- tral line selection method to make quantitative analysis results obtained the optimization.

关 键 词：激光诱导击穿光谱技术 定量分析 内标法 谱线选择 定标曲线 

分 类 号：O655[理学—分析化学]