Signatures of aromatic carbons in the infrared absorption spectra of soils

Lucia M. Lepodise; Romang Bosigo

doi:10.1016/j.saa.2021.120469

Signatures of aromatic carbons in the infrared absorption spectra of soils

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Abstract

High fertility of the terra preta soils is often attributed to the high concentration of aromatic compounds found in these soils. Chemical characterization of two soil samples collected from different locations in Botswana has shown some similar properties with terra preta. Fourier Transform Infrared (FTIR) analysis revealed five common absorption bands between the soil samples and the aromatic compounds. The common bands were found to be due to the vibration of the benzene ring thus indicating traces of aromatic compounds in the soil samples. X-ray diffraction (XRD) revealed the existence of only two major nutrients which are magnesium and calcium in the studied samples. The soil pHs were found to be 6.8 for the ploughing field soil and 7.4 for backyard garden soil sample which are higher than the previously reported pH of terra preta which ranges from 5.0 to 5.4.

Original language	English
Article number	120469
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	267
DOIs	https://doi.org/10.1016/j.saa.2021.120469
Publication status	Published - Feb 15 2022

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

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10.1016/j.saa.2021.120469

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title = "Signatures of aromatic carbons in the infrared absorption spectra of soils",

abstract = "High fertility of the terra preta soils is often attributed to the high concentration of aromatic compounds found in these soils. Chemical characterization of two soil samples collected from different locations in Botswana has shown some similar properties with terra preta. Fourier Transform Infrared (FTIR) analysis revealed five common absorption bands between the soil samples and the aromatic compounds. The common bands were found to be due to the vibration of the benzene ring thus indicating traces of aromatic compounds in the soil samples. X-ray diffraction (XRD) revealed the existence of only two major nutrients which are magnesium and calcium in the studied samples. The soil pHs were found to be 6.8 for the ploughing field soil and 7.4 for backyard garden soil sample which are higher than the previously reported pH of terra preta which ranges from 5.0 to 5.4.",

author = "Lepodise, {Lucia M.} and Romang Bosigo",

note = "Funding Information: This work was supported by the Botswana International University of Science and Technology. Numerical modeling was performed at the University of Wollongong High Performance Computing Centre. Measurements of aromatic compounds and terra preta were performed at the Department of Physics at the University of Wollongong. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

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day = "15",

doi = "10.1016/j.saa.2021.120469",

language = "English",

volume = "267",

journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",

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T1 - Signatures of aromatic carbons in the infrared absorption spectra of soils

AU - Lepodise, Lucia M.

AU - Bosigo, Romang

N1 - Funding Information: This work was supported by the Botswana International University of Science and Technology. Numerical modeling was performed at the University of Wollongong High Performance Computing Centre. Measurements of aromatic compounds and terra preta were performed at the Department of Physics at the University of Wollongong. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/2/15

Y1 - 2022/2/15

N2 - High fertility of the terra preta soils is often attributed to the high concentration of aromatic compounds found in these soils. Chemical characterization of two soil samples collected from different locations in Botswana has shown some similar properties with terra preta. Fourier Transform Infrared (FTIR) analysis revealed five common absorption bands between the soil samples and the aromatic compounds. The common bands were found to be due to the vibration of the benzene ring thus indicating traces of aromatic compounds in the soil samples. X-ray diffraction (XRD) revealed the existence of only two major nutrients which are magnesium and calcium in the studied samples. The soil pHs were found to be 6.8 for the ploughing field soil and 7.4 for backyard garden soil sample which are higher than the previously reported pH of terra preta which ranges from 5.0 to 5.4.

AB - High fertility of the terra preta soils is often attributed to the high concentration of aromatic compounds found in these soils. Chemical characterization of two soil samples collected from different locations in Botswana has shown some similar properties with terra preta. Fourier Transform Infrared (FTIR) analysis revealed five common absorption bands between the soil samples and the aromatic compounds. The common bands were found to be due to the vibration of the benzene ring thus indicating traces of aromatic compounds in the soil samples. X-ray diffraction (XRD) revealed the existence of only two major nutrients which are magnesium and calcium in the studied samples. The soil pHs were found to be 6.8 for the ploughing field soil and 7.4 for backyard garden soil sample which are higher than the previously reported pH of terra preta which ranges from 5.0 to 5.4.

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U2 - 10.1016/j.saa.2021.120469

DO - 10.1016/j.saa.2021.120469

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JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

M1 - 120469

ER -

Signatures of aromatic carbons in the infrared absorption spectra of soils

Abstract

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