采用激光诱导击穿光谱技术对炉渣中的Ca、Mg含量进行了定量分析.由于炉渣成分复杂,建立的一元回归关系式往往得不到理想的结果,这时需要考虑多个自变量的回归分析问题.为了分析炉渣中Ca、Mg元素的含量,将炉渣中Mg、Ca、Fe、Si、Al的原子谱线强度以及Mg、Ca的离子谱线强度作为输入向量.由于不同谱线强度相差过大时,会使在计算出的权重系数中不同谱线所占的比重大不相同.为了消除不同谱线强度差距过大的影响,对光谱强度进行标准化处理,把所有谱线强度的值放在了一个相似的范围.综合对比分析了非线性多元函数定标、BP神经网络定标以及径向基网络(RBF神经网络)定标在炉渣成分分析中的作用,并重点分析了RBF神经网络定标相对于传统非线性定标方法的优势.
参考文献
| [1] | Wang Qi.Experimental Study for on-line Analysis of Slag Based on Laser-induced Breakdown Spectroscopy(基于LIBS技术的炉渣在线分析实验研究)[D].Hefei:Doctorial Dissertation of University of Chinese Academy of Sciences,2012(in Chinese). |
| [2] | Chen Xinglong,Dong Fengzhong,Wang Qi,et al.Quantitative analysis of slag by calibration-free laser-induced breakdown spectroscopy[J].Spectroscopy and Spectral Analysis(光谱学与光谱分析),2011,31(2):3289-3293(in Chinese). |
| [3] | Winefordner J D,Gornushkin I B,Correll T,et al.Comparing several atomic spectrometric methods to the super stars:Special emphasis on laser induced breakdown spectrometry,LIBS,a future super star[J].Journal of Analytical Atomic Spectrometry,2004,19(9):1061-1083. |
| [4] | Samarasinghe S.Neural Networks for Applied Sciences and Engineering:From Fundamentals to Complex Pattern Recognition[M].CRC Press,2006. |
| [5] | Yao Shunchun.The Application ofLaser Induced Breakdown Spectroscopy for Diagnosis ofPower Station(激光诱导击穿光谱技术在电站运行诊断中的应用研究)[D].Guangzhou:Doctorial Dissertation of South China of Technology,2011(in Chinese). |
| [6] | Xu Lu,Shao Xueguang.Methods of Chemometrics(化学计量学方法)[M].Beijing:Science Press,2006(in Chinese). |
| [7] | Sun Lanxiang.Method and Experimental Research on Quantifying Multi-element Alloys Based on Laser-induced Breakdown Spectroscopy(基于激光诱导击穿光谱的多元合金成分定量分析方法与实验研究)[D].Shengyang:Doctorial Dissertation of Shenyang Institute of Automation,Chinese Academy of Sciences,2009(in Chinese). |
| [8] | Fang Huiqun,et al.Instrumental Analysis(仪器分析)[M].Beijing:Science Press,2004(in Chinese). |
| [9] | Inakollu P,Philip T,Rai A K,et al.A comparative study of laser induced breakdown spectroscopy analysis for element concentrations in aluminum alloy using artificial neural networks and calibration methods[J].Spectrochimica Acta Part B:Atomic Spectroscopy,2009,64(1):99-104. |
| [10] | Liang Yunxian,Chen Xinglong,Wang Qi,et al.Quantitative analysis of Ca of Mg in slag with artificial neural networks[J].Journal of Atmospheric and Environmental Optics(大气与环境光学学报),2012,7(2):124-130(in Chinese). |
| [11] | FECIT Technological Product Research Center.Neural Network Theory and the Realization of MATLAB 7(神经网络理论与 MATLAB7实现)[M].Beijing:Electronic Industry Press,2005(in Chinese). |
| [12] | Chen S,Ma X,Zhao H,et al.Research of laser induced breakdown spectroscopy for detection of trace Cd in polluted soil[J].Proc.of SPIE,2012,8421:8421AL-1. |
| [13] | Zhang Defeng.Neural Network Programming of Matlab(MATLAB神经网络编程)[M].Beijing:Chemical Industry Press,2011(in Chinese). |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%