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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Senesi, G. S. [1] ; Romano, R. A. [2] ; Marangoni, B. S. [3] ; Nicolodelli, G. [4] ; Villas-Boas, P. R. [4] ; Benites, V. M. [5] ; Milori, D. M. B. P. [4]
Total Authors: 7
Affiliation:
[1] CNR, Ist Nanotecnol NANOTEC, PlasMiLab, Via Amendola 122-D, I-70126 Bari - Italy
[2] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Carlos, SP - Brazil
[3] Univ Fed Mato Grosso do Sul, Inst Phys, Campo Grande, MS - Brazil
[4] EMBRAPA Agr Instrumentat, Sao Carlos, SP - Brazil
[5] Embrapa Solos, Rua Jardim Botanico, Rio De Janeiro, RJ - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Journal of Applied Spectroscopy; v. 84, n. 5, p. 923-928, NOV 2017.
Web of Science Citations: 5
Abstract

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. (AU)

FAPESP's process: 12/24349-0 - Development and evaluation of a double-pulse LIBS system: Application for soil characterization
Grantee:Gustavo Nicolodelli
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 13/02165-7 - Development of a new method for nutrients and contaminants quantification in fertilizers: New approach for LIBS technique
Grantee:Bruno Spolon Marangoni
Support Opportunities: Scholarships in Brazil - Post-Doctoral