6533b7dbfe1ef96bd1270168
RESEARCH PRODUCT
Testing of the region of Murcia soils by near infrared diffuse reflectance spectroscopy and chemometrics.
María José Martínez-sánchezJavier MorosSalvador GarriguesCarmen Pérez-sirventMiguel De La Guardiasubject
Spectroscopy Near-InfraredSoil testDiffuse reflectance infrared fourier transformChemistryNear-infrared spectroscopyAnalytical chemistryMineralogyInfrared spectroscopyAnalytical ChemistryChemometricsSoilMetalsPartial least squares regressionDiffuse reflectionOrganic ChemicalsSpectroscopydescription
A partial least squares near infrared (PLS-NIR) method has been developed for the determination of several physicochemical parameters in soils from different locations of the Region of Murcia. The method was based on the proper chemometric treatment of diffuse reflectance spectra of soil samples. Reflectance spectra were scanned from samples stored in glass vials in the NIR region between 800 and 2600 nm, averaging 36 scans per spectrum at a resolution of 8 cm(-1). Models were built using reference data of 39 samples selected from a dendrogram obtained after hierarchical cluster analysis of NIR spectra of soils and prediction parameters were established from a validation set of 109 additional samples of the same area not considered to build the model. Organic matter, CaCO(3), pH, electrical conductivity (EC), together with several trace metals as Cr, Co, Ni, Cu, Zn, As, Se, Cd and Tl, were employed as characteristic parameters of the soils under study, and found results evidenced that PLS-NIR provides a valuable tool for screening purposes providing residual predictive deviations which ranged from 0.9 to 1.5 as a function of the considered parameter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-09-01 | Talanta |