Application of FTIR Spectroscopy to Agricultural Soils Analysis

Linker, Raphael

doi:10.5772/15732

Cited by 18 publications

(17 citation statements)

References 67 publications

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“…The use of neat samples is widespread in soil analysis 28,[58][59][60][61] due to its advantage of minimal sample preparation and quantitative use of spectra with chemometrics, which is not necessarily improved by the use of halide salt dilution. [62][63][64] Additionally, specular reflectance that minimizes silicate peaks in spectra of neat soils can be considered an advantage when assessment of SOM composition is the objective. 45 Spectra were calculated as the mean of 256 scans across 4000-500 cm À1 at 4 cm À1 resolution.…”

Section: Characterization Of Soil Organic Matter Compositionmentioning

confidence: 99%

Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

et al. 2017

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Chemical oxidations are routinely employed in soil science to study soil organic matter (SOM), and their interpretation could be improved by characterizing oxidation effects on SOM composition with spectroscopy. We investigated the effects of routinely employed oxidants on SOM composition in a Mollic Xerofluvent representative of intensively managed agricultural soils in the California Central Valley. Soil samples were subjected to oxidation by potassium permanganate (KMnO), sodium hypochlorite (NaOCl), and hydrogen peroxide (HO). Additionally, non-oxidized and oxidized soils were treated with hydrofluoric acid (HF) to evaluate reduction of the mineral component to improve spectroscopy of oxidation effects. Oxidized non-HF and HF-treated soils were characterized by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), C cross polarization magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR) spectroscopy, and pyrolysis molecular beam mass spectrometry (py-MBMS), and for particle size distribution (PSD) using laser diffractometry (LD). Across the range of soil organic carbon (OC) removed by oxidations (14-72%), aliphatic C-H stretch at 3000-2800 cm (DRIFTS) decreased with OC removal, and this trend was enhanced by HF treatment due to significant demineralization in this soil (70%). Analysis by NMR spectroscopy was feasible only after HF treatment, and did not reveal trends between OC removal and C functional groups. Pyrolysis-MBMS did not detect differences among oxidations, even after HF treatment of soils. Hydrofluoric acid entailed OC loss (13-39%), and for HO oxidized soils increased C:N and substantially decreased mean particle size. This study demonstrates the feasibility of using HF to improve characterizations of SOM composition following oxidations as practiced in soil science, in particular for DRIFTS. Since OC removal by oxidants, mineral removal by HF, and the interaction of oxidants and HF observed for this soil may differ for soils with different mineralogies, future work should examine additional soil and land use types to optimize characterizations of oxidation effects on SOM composition.

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Section: Characterization Of Soil Organic Matter Compositionmentioning

confidence: 99%

Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

et al. 2017

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“…The soils were then analysed using Fourier Transform Mid-Infrared Reflectance Spectroscopy at waveband range from 4001.6 to 601.7 cm, at World Agroforestry Centre (ICRAF) Soil-Plant Spectral Diagnostics Laboratory in Nairobi (Bruker Optik GmbH, Germany [44]). Soil samples were scanned 32 times and their four spectra averaged to account for variability within sample and differences in particle size and packaging in wells [43].…”

Section: Spectral Data Analysismentioning

confidence: 99%

Variability of Soil Micronutrients Concentration along the Slopes of Mount Kilimanjaro, Tanzania

Mpanda

Majule

Marchant

et al. 2016

Applied and Environmental Soil Science

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Soil micronutrients are important elements for plant growth despite being required in small quantities. Deficiency of micronutrients can result in severe crop failure while excess levels can lead to health hazards; therefore, investigating their status in agricultural land is crucial. The correlated micronutrients implied that they were affected by similar factors. Soil pH correlated positively with B, Fe, and Mn and negatively with Cu and Zn, hence probably influencing their availability. Therefore, the need for sustaining micronutrient at sufficient levels is crucial. Management interventions may include moderating soil pH by reducing acidity through liming in the higher elevations and incorporation of organic matter in the lowlands.

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“…A small amount of each soil sample was placed on the IR sample cell [16,17], and the peaks were recorded which are shown in Figs. 1-3 and spectral ranges are given in Table 8.…”

Section: Identification Of Organic Carbon (Oc) By Ftirmentioning

confidence: 99%

Study of Physicochemical Properties and Nutrient Content of Agricultural Soils of Chittoor District Using Different Analytical Methods

S¹,

Chowdary²,

Kirthi³

2018

Asian J Pharm Clin Res

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Objective: The objective of this study is to determine the physicochemical properties and nutrient content of agricultural soils at various stations such as black soil from Kalroad Palli village (Chandragiri mandal), red soil from Ramapuram village (Ramachandrapuram Mandal), and clay from Yerpedu village (Yerpedu Mandal) of Chittoor district. Method:The physicochemical parameters such as pH was measured using pH meter (Thermo Scientific); electrical conductivity (EC) was measured by conductivity meter (CM180 Elico Technologies); organic carbon (OC) was determined by Fourier-transform infrared (Agilent technologies 630) and with ultraviolet (UV) spectrophotometer (Agilent technologies Cary UV 60); nitrogen (N2) was estimated by Kjeldahl method; potassium (K), sodium (Na), and calcium (Ca) were estimated using flame photometer (Elico Technologies CL/361); and magnesium (Mg) was estimated by titrimetric method.

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Application of FTIR Spectroscopy to Agricultural Soils Analysis

Cited by 18 publications

References 67 publications

Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

Variability of Soil Micronutrients Concentration along the Slopes of Mount Kilimanjaro, Tanzania

Study of Physicochemical Properties and Nutrient Content of Agricultural Soils of Chittoor District Using Different Analytical Methods

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Application of FTIR Spectroscopy to Agricultural Soils Analysis

Cited by 18 publications

References 67 publications

Application of DRIFTS,13C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

Application of DRIFTS,13C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

Variability of Soil Micronutrients Concentration along the Slopes of Mount Kilimanjaro, Tanzania

Study of Physicochemical Properties and Nutrient Content of Agricultural Soils of Chittoor District Using Different Analytical Methods

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Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent

Application of DRIFTS,¹³C NMR, and py-MBMS to Characterize the Effects of Soil Science Oxidation Assays on Soil Organic Matter Composition in a Mollic Xerofluvent