title: Rapid elemental analysis and provenance study of Blumea balsamifera DC using laser-induced breakdown spectroscopy.
abstract: Laser-induced breakdown spectroscopy (LIBS) was applied to perform a rapid elemental analysis and provenance study of Blumea balsamifera DC. Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) were implemented to exploit the multivariate nature of the LIBS data. Scores and loadings of computed principal components visually illustrated the differing spectral data. The PLS-DA algorithm showed good classification performance. The PLS-DA model using complete spectra as input variables had similar discrimination performance to using selected spectral lines as input variables. The down-selection of spectral lines was specifically focused on the major elements of B. balsamifera samples. Results indicated that LIBS could be used to rapidly analyze elements and to perform provenance study of B. balsamifera.
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. xiaonaliu5627@163.com.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Liu
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. zhangqiao0824@foxmail.com.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. wzs@bucm.edu.cn.
authors.forename: Zhisheng
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. shixinyuan01@163.com.
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Shi
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. zn26140@163.com.
authors.forename: Na
authors.initials: N
authors.lastname: Zhao
authors.affiliation: Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China. yjqiao@263.net.
authors.forename: Yanjiang
authors.initials: Y
authors.lastname: Qiao
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002681:China; D016002:Discriminant Analysis; D004602:Elements; D005843:Geography; D007834:Lasers; D016018:Least-Squares Analysis; D025341:Principal Component Analysis; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D004602:Elements