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NIR spectroscopy to identify and quantify imazapyr in soil

Opened Access NIR spectroscopy to identify and quantify imazapyr in soil


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Autor: Soto Barajas, Milton Carlos
González-Martín, M.I.
Hernández Hierro, José Miguel
Prado, Blanca Lucia
Hidalgo, Claudia M.
Etchevers, J. D.
Departamento: Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal
Fecha: 2012
Publicado en: Analytical Methods, 4 (9), 2764-2771
Tipo de documento: Artículo
Resumen: The analysis of herbicide residues applied to the soil is commonly conducted by using chromatographic techniques which use organic solvents, are costly and time consuming. Having a simple and inexpensive discriminant method to determine samples with and without herbicide residues would be highly beneficial to lower costs of analysis and save time. The general objective of the present work was to develop such methodology. In particular, the presence of imazapyr was quantified using a near-infrared spectroscopy (NIRS) and a chemometrics approach. The experimental soil for a qualitative experiment of discrimination was Phaeozem with different agricultural managements and the following treatments: dry soil doped with imazapyr, rehydrated soil also doped with the herbicide, and control soil without the chemical. A discriminant algorithm was developed to allow the identification of soils containing imazapyr and those which did not contain the herbicide. The qualitative approach was...
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