The research on separating and extracting overlapping spectral feature lines in LIBS using damped least squares method

• Published in: Guang pu xue yu guang pu fen xi Vol. 35; no. 2; p. 309
• Main Authors: Wang, Yin, Zhao, Nan-jing, Liu, Wen-qing, Yu, Yang, Fang, Li, Meng, De-shuo, Hu, Li, Zhang, Da-hai, Ma, Min-jun, Xiao, Xue, Wang, Yu, Liu, Jian-guo
• Format: Journal Article
• Language: Chinese
• Published: China 01.02.2015
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2015)02-0309-06

In recent years, the technology of laser induced breakdown spectroscopy has been developed rapidly. As one kind of new material composition detection technology, laser induced breakdown spectroscopy can simultaneously detect multi elements fast and simply without any complex sample preparation and realize field, in-situ material composition detection of the sample to be tested. This kind of technology is very promising in many fields. It is very important to separate, fit and extract spectral feature lines in laser induced breakdown spectroscopy, which is the cornerstone of spectral feature recognition and subsequent elements concentrations inversion research. In order to realize effective separation, fitting and extraction of spectral feature lines in laser induced breakdown spectroscopy, the original parameters for spectral lines fitting before iteration were analyzed and determined. The spectral feature line of' chromium (Cr I : 427.480 nm) in fly ash gathered from a coal-fired power station, which was ove