Floresta e Ambiente
https://floram.org/article/doi/10.1590/2179-8087-FLORAM-2021-0098
Floresta e Ambiente
Short Communication Silviculture

Fluoridic Acid in the Infrared Spectroscopy Analysis of Chemical Composition of Organic Matter

Fabrício Marinho Lisbôa, Emanuela Forestieri Gama-Rodrigues, Antonio Carlos Gama-Rodrigues

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Abstract

Fourier transform infrared spectroscopy (FTIR) assists in investigating functional groups of soil organic matter (SOM). However, the use of this tool is impaired given the low organic carbon levels and high content of oxides in tropical soils, resulting in low quality spectra and in turn requiring the use of hydrofluoric acid (HF). The objective of this study was to verify the efficiency of using HF in removing the mineral fraction and to increase the C concentration to enable visualizing the bands related to SOM in infrared spectra in soil samples under forest system. The HF treatment was efficient in removing mineral components and proportionally increasing C. The FTIR with HF enabled identifying differences between coarse and fine fractions. The spectra of the HF samples showed that the coarse fractions presented bands related to aromatic material and the fine fractions presented more labile components, with the absence of more recalcitrant components.

Keywords

FTIR; carbon stock; tropical soil; soil aggregates

References

  • Boeni M, Bayer C, Dieckow J, Conceição PC, Dick DP, Knicker H, Salton JC, Macedo MCM. Organic matter composition in density fractions of Cerrado Ferralsols as revealed by CPMAS 13C NMR: Influence of pastureland, cropland and integrated crop-livestock. Agriculture, Ecosystems and Environment, 2014, 190: 80-86.

  • Bornemann L, Welp G, Amelung W. Particulate organic matter at the field scale: rapid acquisition using mid-infrared spectroscopy. Soil Sci Soc Am J, 2010, 74:1147-1156.

  • Calderón FJ, Reves III, JB, Collins HP, Paul EA. Chemical Differences in Soil Organic Matter Fractions determined by Diffuse-Reflectance Mid-Infrared Spectroscopy. Soil Science Society of America Journal, 2011, 75: 568-579.

  • Dalmolin RSD, Gonçalves CN, Dick DP, Knicker H, Klamt E, Kogel-Knabner I. Organic matter characteristics and distribution in Ferralsol profiles of a climosequence in southern Brazil. European Journal of Soil Science, 2006, 57: 644-654.

  • Dick DP, Martinazzo R, Dalmolin RSD, Jacques AVA, Mielniczuk J, Rosa AS. Impacto da queima nos atributos químicos e na composição química da matéria orgânica do solo e na vegetação. Pesquisa Agropecuária Brasileira, 2008, 43: 633-640.

  • Djomgoue P, Njopwouo D. FT-IR Spectroscopy Applied for Surface Clays Characterization. Journal of Surface Engineered Materials and Advanced Technology, 2013, 3: 275-282.

  • Elliot ET. Aggregate strucuture and carbon, nitrogen and phosphorus in native and cultivated soils. Soil Science Society of America Journal , 1986, 50: 627- 633.

  • Empresa Brasileira de Pesquisa Agropecuária. Sistema Brasileiro de Classificação de Solos. Rio de janeiro: CNPS, 2013. 353p.

  • Gonçalves CN, Dalmolin RSD, Dick DP, Knicker H, Klamt E, Kogel-Knabner I. The effect of 10% HF treatment on the resolution of CPMAS 13C NMR spectra and on the quality of organic matter in Ferralsols. Geoderma, 2003, 116: 373-392.

  • Haberhauer G, Gerzabek MH. Drift and transmission FT-IR spectroscopy of forest soils: an approach to determine decomposition processes of forest litter. Vibrational Spectroscopy, 1999, 19: 413-417.

  • Janik LJ, Merry RH, Forrester S, Lanyon D, Rawson A. Rapid prediction of soil water retention using mid infrared spectroscopy. Soil Sci Soc Am J , 2007, 71:507-514.

  • Jindaluang W, Kheoruenromne I, Suddhiprakarn A, Singh B.P, Singh, B. Influence of soil texture and mineralogy on organic matter content and composition in physically separated fractions soils of Thailand. Geoderma , 2013, 195-196: 207-219.

  • Lehmann J, Kleber M. The contentious nature of soil organic matter. Nature, 205, 528: 60-68.

  • Pisani O, Hills KM, Courtier-Murias D, Haddix ML, Paul EA, Conant RT et al. Accumulation of aliphatic compounds in soil with increasing mean annual temperature. Organic Geochemistry, 2014, 76: 118-127.

  • Sarkhot D, Comerford N.B, Jokela E.J, Reeves III J.B, Harris W.G. Aggregation and aggregates carbon in a forested southeastern Coastal Plain Spodosol. Soil Science Society of America Journal , 2007, 71:1779-1787.

  • Schmidt, M.W.I.; Knicker, H.; Hatcher, P.G.; Kogel-Knabner, K. Improvement of 13C and 15N CPMAS NMR spectra of bulk soils, particle size ftactions and organic material by treatment with 10% hydrofluoric acid. European Journul of Soil Science, 1997, 48: 319-328.

  • Silva, F.R. Energia ultrassônica ótima para dispersão de agregados em solos altamente intemperizados no sul da Bahia, Brasil. Dissertação (Mestrado em Produção Vegetal) - Campos do Goytacazes-RJ, Universidade Estadual do Norte Fluminense - UENF,2018, 68 p.

  • Six J, Paustian K. Aggregate-associated soil organic matter as an ecosystem property and a measurement tool. Soil Biology & Biochemistry, 2014, 68: A4-A9.

  • Vicente LC, Gama-Rodrigue, EF, Gama-Rodrigues AC, Marciano R. Organic carbon within soil aggregates under forestry systems and pasture in Southeast region of Brazil. Catena, 2019, 182, 104139.


Submitted date:
12/22/2021

Accepted date:
07/15/2022

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