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Type: Artigo de periódico
Title: Determinação não destrutiva do nitrogênio total em plantas por espectroscopia de reflectância difusa no infravermelho próximo
Title Alternative: Non-destructive determination of total nitrogen in plants by diffuse reflectance near infrared spectroscopy
Author: Lima, Kássio M. G.
Trevisan, Marcello G.
Poppi, Ronei J.
Andrade, João Carlos de
Abstract: Diffuse reflectance near-infrared (DR-NIR) spectroscopy associated with partial least squares (PLS) multivariate calibration is proposed for a direct, non-destructive, determination of total nitrogen in wheat leaves. The procedure was developed for an Analytical Instrumental Analysis course, carried out at the Institute of Chemistry of the State University of Campinas. The DR-NIR results are in good agreement with those obtained by the Kjeldhal standard procedure, with a relative error of less than ± 3% and the method may be used for teaching purposes as well as for routine analysis.
Subject: total nitrogen
near-infrared diffuse reflectance
teaching activity
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 31, n. 3, p. 700-703, 2008.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422008000300039
Date Issue: 1-Jan-2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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