Thermal stability of organic matter of typical chernozems under different land uses

Volkov, Dmitry S.; Rogova, Olga B.; Проскурнин, М. А.; Farkhodov, Yu. R.; Markeeva, Larisa

doi:10.1016/j.still.2019.104500

Cited by 17 publications

(21 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Typical chernozems (heavy loamy) of the Kursk region (Russia) with a significantly different history and intensity of agricultural use: native (intact, annually mown) steppe vegetation, permanent bare fallow since 1964, shelterbelt since 1964, arable cropland under wheat, cultivated without crop rotation since 1964 . Samples were taken on the territory of the long-term field experiment of the Kursk Research Institute of Agricultural Production and V.V.…”

Section: Materials and Methodsmentioning

confidence: 99%

“…FTIR–photoacoustic spectroscopy (FTIR–PAS), which appeared in a soil analysis two decades ago, now matured into a full-fledged characterization method − due to several advantages over other methods of IR spectroscopy of soils: a large number of well-defined bands and a broader range of the informational spectrum. − FTIR–PAS is an alternative to transmission, diffuse-reflectance, and attenuated–total reflection IR (ATR–FTIR) techniques and is less dependent on the particle size . Recently, scatter PAS techniques in the frequency regime have been proposed to study the morphology of aggregated samples and retrieve individual contributions of scattering and absorption of complex samples. , FTIR–PAS applications for soils are diverse: they involve matrix soil composition, the total SOM, the texture and mineralogy of clay minerals, the availability of nutrients, and the evaluation of other properties (fertility, structurization, and bacteriological activity). ,− Soil classification is carried out using principal component analysis, and the proportion of correctly identified samples in the control sample is usually more than 95%. , ATR–FTIR is also used for the organic matter content − and adsorbed water and minerals, including nitrates. , Its advantages from the viewpoint of sample preparation and methodology are as follows: soil samples are pre-dried, the fraction of above 2 mm is usually sieved out, and the sample is placed on the crystal with a clamping screw.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

FTIR Photoacoustic and ATR Spectroscopies of Soils with Aggregate Size Fractionation by Dry Sieving

et al. 2022

Self Cite

View full text Add to dashboard Cite

Granulometric fractionation as a source of additional information on organic-matter and inorganic matrix components of soils using FTIR–photoacoustic spectroscopy (FTIR–PAS) supported by attenuated–total reflection FTIR spectroscopy (ATR–FTIR) for a wide range of aggregate fractions (10–5000 μm) was used to compare the sensitivity, reproducibility, information contents, and representativity of fractionated samples. For chernozem and sod-podzolic soils and different agricultural-use chernozem samples, differences in the composition were found, manifested in normalized spectra of microaggregate fractions, with the range of 10–100 μm bearing the complete information. Most changes are observed in the soil organic matter range (1900–1340 cm–1), although these changes are slight, and in the soil-matrix region (550–300 cm–1). The latter region increases the intensity of bands corresponding to amorphous silica and clay minerals in fine fractions, while the intensity of bands attributed to quartz lattice vibrations decreases. FTIR–PAS spectra do not differ considerably at high interferometer modulation frequencies as the signal-penetration depth is comparable with particle sizes. The soil fractions below 20 μm result in the maximum sensitivity, reproducibility, and signal-to-noise ratio, showing no changes from coarser fractions by the information content and, thus, providing representative samples for analysis. The fractionation shows more differences in the sod-podzolic and chernozem soil fractions than the whole soil spectra. FTIR–PAS provides better sensitivity and reproducibility in the 4000–2000 cm–1 region and ATR–FTIR in the 2000–100 cm–1 region.

show abstract

Section: Materials and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

FTIR Photoacoustic and ATR Spectroscopies of Soils with Aggregate Size Fractionation by Dry Sieving

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The total mineral content varies with the profile as 15-18% (Travnikova et al, 2010); organic carbon content, 1.37% w/w; pH 5.96. Typical chernozems (heavy loamy) of the Kursk region (Russia) with a significantly different history and intensity of agricultural use: native (intact, annually mown) steppe vegetation, permanent bare fallow since 1964, shelterbelt since 1964, arable cropland under wheat, cultivated without crop rotation since 1964 [6]. Samples ICEPR 115-2 were taken on the territory of the long-term field experiment of the Kursk Research Institute of Agricultural Production and V.V.…”

Section: Methodsmentioning

confidence: 99%

Temperature Dependences of IR Spectral Band Frequencies of Soils

Volkov¹,

Rogova²,

Proskurnin³

2021

Proceedings of the 7th World Congress on New Technologies

Self Cite

View full text Add to dashboard Cite

Temperature dependences of the IR spectra of different size aggregate fractions of chernozem and soddy podzol soils in the range 25-215 °C (298-488 K with a step of 2.5 °C by heating in the air) for different agriculture use samples were investigated. The band maximum temperature dependence can be much more stable to experimental conditions and thus serve as a new quantitative parameter characterizing soils with IR spectroscopy. For the first time, a reversible change in the frequencies of the band maxima in IR spectra upon heating was observed, which can be interpreted as forming structures with a particular order in the dry state. The difference in the behavior of the lattice vibrations of quartz, hydrogen bonds, and organic matter that can be used to differentiate soils was found and discussed.

show abstract

“…Typical chernozems (heavy loamy) of the Kursk region (Russia) with a significantly different history and intensity of agricultural use were sampled: native (intact, annually mown) steppe vegetation, permanent bare fallow since 1964, shelterbelt since 1964, arable cropland under wheat, cultivated without crop rotation since 1964 [84]. Samples were taken on the territory of the long-term field experiment of the Kursk Research Institute of Agricultural Production and V.V.…”

Section: Chernozem Soilsmentioning

confidence: 99%

Organic Matter and Mineral Composition of Silicate Soils: FTIR Comparison Study by Photoacoustic, Diffuse Reflectance, and Attenuated Total Reflection Modalities

2021

View full text Add to dashboard Cite

This study aims to compare photoacoustic (FTIR–PAS), diffuse reflectance (DRIFT), and attenuated total reflection (ATR) FTIR modalities in the wide wavenumber range from NIR (7500 cm−1) to FIR (150 cm−1) for the same silicate soil samples under the same conditions. The possibilities of non-destructive rapid qualitative analysis of soils by these modalities without comprehensive data treatment were compared. The assignment of more than 100 bands for the chernozem and sod-podzolic as common types of silicate types of soil was made. The following groups of bands of organic matter and inorganic matrix were reliably found in spectra of all or at least two modalities: 3690–3680 cm−1 (hydrogen-bonded SiO–H…H2O stretch, not ATR), 2930–2910 cm−1 and 2860–2850 cm−1 (methylene stretch), 1390–1380 cm−1, (symmetric stretch carboxylate, DRIFT and FTIR–PAS); 2000–1990 cm−1, 1885 cm−1, and 1790–1783 cm−1 (SiO2 overtones, DRIFT and FTIR–PAS), 1163–1153 cm−1, SiO2 lattice (not FTIR–PAS), 1037 cm−1 (Si–O or Al–O stretch), 796 cm−1 (lattice symmetrical Si–O–Si stretch); 697 cm−1, SiO2; and 256 cm−1 (not FTIR–PAS). Amide I, II, and III bands appear in DRIFT and FTIR–PAS spectra while not in ATR. Except for methylene and carboxylate groups, CH vibrations (3100–2900 cm−1) are not seen in ATR. Bands at 1640–1630 cm−1, 1620–1610 cm−1, 1600–1598 cm−1 (primary water bands and probably carboxylate) appear in the spectra of all three modalities but are unresolved and require data treatment. It is preferable to use all three modalities to characterize both soil organic matter and mineral composition. DRIFT provides the maximum number of bands in all three modalities and should be selected as a primary technique in the NIR and 4000–2000 cm−1 regions for hydrogen-bonding bands, CHX groups, and the silicate matrix. ATR–FTIR complements DRIFT and provides a good sensitivity for soil water and the matrix in 2000–400 cm−1. FTIR–PAS in 4000–1500 cm−1 reveals more bands than DRIFT and shows the highest sensitivity for absorption bands that do not appear in DRIFT or ATR-IR spectra. Thus, FTIR–PAS is expedient for supporting either DRIFT or ATR–FTIR. This modality comparison can be a basis for methodological support of IR spectroscopy of soils and similar organomineral complexes.

show abstract

Thermal stability of organic matter of typical chernozems under different land uses

Cited by 17 publications

References 59 publications

FTIR Photoacoustic and ATR Spectroscopies of Soils with Aggregate Size Fractionation by Dry Sieving

FTIR Photoacoustic and ATR Spectroscopies of Soils with Aggregate Size Fractionation by Dry Sieving

Temperature Dependences of IR Spectral Band Frequencies of Soils

Organic Matter and Mineral Composition of Silicate Soils: FTIR Comparison Study by Photoacoustic, Diffuse Reflectance, and Attenuated Total Reflection Modalities

Contact Info

Product

Resources

About