Laser-Induced Breakdown Spectroscopy Associated with Multivariate Analysis Applied to Discriminate Fertilizers of Different Nature

被引:0
|
作者
G. S. Senesi
R. A. Romano
B. S. Marangoni
G. Nicolodelli
P. R. Villas-Boas
V. M. Benites
D. M. B. P. Milori
机构
[1] CNR-Istituto di Nanotecnologia (NANOTEC)-PlasMiLab,São Carlos Institute of Physics
[2] University of São Paulo,undefined
[3] Physics Institute,undefined
[4] Federal University of Mato Grosso do Sul,undefined
[5] Embrapa Agricultural Instrumentation,undefined
[6] Embrapa Solos,undefined
[7] Rua Jardim Botanico,undefined
来源
Journal of Applied Spectroscopy | 2017年 / 84卷
关键词
laser-induced breakdown spectroscopy; phosphate rocks; organomineral fertilizers; principal components analysis; partial least squares regression;
D O I
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中图分类号
学科分类号
摘要
A number of phosphate rocks and organomineral P fertilizers was analyzed comparatively by laser-induced breakdown spectroscopy (LIBS) in both single- and double-pulse modes associated with two chemometric methods, i.e., principal components analysis (PCA) and partial least squares regression (PLSR). PCA was demonstrated to be a valuable method for the identification of spectral differences between similar samples with only minor compositional differences. The raw and normalized LIBS spectra were able to provide effective identification and discrimination at a 95% confidence level and in good agreement with the reference concentrations. Results obtained confirm the promising potential of LIBS for the rapid classification of P fertilizers in situ.
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页码:923 / 928
页数:5
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