Rapid Elemental Analysis and Provenance Study of Blumea balsamifera DC Using Laser-Induced Breakdown Spectroscopy

Sensors

Xiaona Liu²  Qiao Zhang²  Zhisheng Wu¹  Xinyuan Shi²  Na Zhao² 

[1] Beijing University of Chinese Medicine, South of Wangjing Middle Ring Road, Chaoyang District, Beijing 100102, China;

关键词: LIBS;    Blumea balsamifera DC;    provenance study;    PCA;    PLS-DA;   

DOI  :  10.3390/s150100642

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.