Diffuse reflectance mid-infrared spectroscopy is viable without fine milling

Autor: Jonathan Sanderman, Colleen Smith, José Lucas Safanelli, Cristine L.S. Morgan, Jason Ackerson, Nathaniel Looker, Cara Mathers, Rebecca Keating, Ashok A. Kumar
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Soil Security, Vol 13, Iss , Pp 100104- (2023)
Druh dokumentu: article
ISSN: 2667-0062
DOI: 10.1016/j.soisec.2023.100104
Popis: While diffuse reflectance Fourier transform mid-infrared spectroscopy (mid-DRIFTS) has been established as a viable low-cost surrogate for traditional soil analyses, the assumed need for fine milling of soil samples prior to analysis is constraining the commercial appeal of this technology. Here, we reevaluate this assumption using a set of 2380 soil samples collected across North American agricultural soils. Cross-validation indicated that the best preprocessing (standard normal variate) and model form (memory-based learning) resulted in very good and nearly identical predictions for the
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