Laser induced breakdown spectroscopy algorithm using weights iteration artificial neural network

2011 ◽  
Author(s):  
Xiaohong Ma ◽  
Zeke Zheng ◽  
Huafeng Zhao ◽  
Min Zhang ◽  
Yanbiao Liao
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Artificial Neural

Energetic materials identification by laser-induced breakdown spectroscopy combined with artificial neural network

2017 ◽  
Vol 56 (12) ◽  
pp. 3372 ◽  
Author(s):  
Amir Hossein Farhadian ◽  
Masoud Kavosh Tehrani ◽  
Mohammad Hossein Keshavarz ◽  
Seyyed Mohammad Reza Darbani
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Energetic Materials ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Artificial Neural

scholarly journals Quantitative Analysis of Major Metals in Agricultural Biochar Using Laser-Induced Breakdown Spectroscopy with an Adaboost Artificial Neural Network Algorithm

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3753 ◽  
Author(s):  
Hongwei Duan ◽  
Lujia Han ◽  
Guangqun Huang
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Univariate Analysis ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Relative Standard ◽  
Significant Difference ◽  
Laser Induced Breakdown ◽  
Artificial Neural ◽  
Backpropagation Artificial Neural Network

To promote the green development of agriculture by returning biochar to farmland, it is of great significance to simultaneously detect heavy and nutritional metals in agricultural biochar. This work aimed first to apply laser-induced breakdown spectroscopy (LIBS) for the determination of heavy (Pb, Cr) and nutritional (K, Na, Ca, Mg, Cu, and Zn) metals in agricultural biochar. Each batch of collected biochar was prepared to a standardized sample using the separating and milling method. Two types of univariate analysis model were developed using peak intensity and integration area of the sensitive emission lines, but the performance did not satisfy the requirements of practical application because of the poor correlations between the measured values and predicted values, as well as large relative standard deviation of the prediction (RSDP) values. An ensemble learning algorithm, adaboost backpropagation artificial neural network (BP-Adaboost), was then used to develop the multivariate analysis models, which had a more robust performance than traditional univariate analysis, partial least squares regression (PLSR), and backpropagation artificial neural network (BP-ANN). The optimized RSDP values for K, Ca, Mg, and Cu were less than 10%, while the RSDP values for Pb, Cr, Zn, and Na were in the range of 10–20%. Moreover, the pairwise t-test of its prediction set showed that there was no significant difference between the measurements of LIBS and ICP-MS. The promising results indicate that rapid and simultaneous detection of major heavy and nutritional metals in agricultural biochar can be achieved using LIBS and reasonable chemometric algorithms.

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