Fourier‐transform infrared spectroscopy for soil organic matter analysis

Abstract The study of soil organic matter (SOM) can benefit from the use Fourier‐transform infrared spectroscopy, an analytical method that complements traditional fractionation and extraction methods. This review provides guidance on diffuse reflectance Fourier transform (DRIFT) in mid‐infrared region (MIR: 4000–400 cm −1 ). Two distinct applications DRIFT spectroscopy are reviewed: (1) characterization (2) quantification. Characterization SOM involves qualitative to semi‐quantitative measurement functional groups constitute matter, quantification employs chemometrics predict fractions SOM. Guidance decision‐making how methods conducted based sample type research question, interpretation results provided.