Clarindo, Analice Nunes; dos Santos, Sara Ramos; De Arruda, David Lukas; Camêlo, Danilo de Lima; da Rocha, Alexandre Tavares; de Souza Jr, Valdomiro Severino; Coe, Heloisa Helena Gomes; de Rezende, Carlos Eduardo; Corrêa, Marcelo Metri: Fourier-transform infrared (FTIR) spectra showing the main absorption bands of soils from Catimbau National Park, Pernambuco, Brazil [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.988126 (dataset in review), In: Clarindo, AN et al.: Integrated thermal, elemental, phytolith, and FTIR characterization of soil organic matter from Catimbau National Park, northeastern Brazil [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.988140 (dataset in review)
Abstract:
The Fourier-transform infrared (FTIR) spectra showed consistent absorption bands across the studied soil profiles, reflecting both mineralogical and organic components. The band at 1630–1650 cm⁻¹ was attributed to carboxylic functional groups, indicating the presence of oxidized organic compounds. Strong absorptions in the 1100–1000 cm⁻¹ region were assigned to Si–O stretching vibrations, characteristic of silicate minerals, particularly quartz and clay minerals, with overlapping contributions from C–O stretching associated with polysaccharides and ester groups. An additional band at 1396 cm⁻¹ was related to carboxylate groups, likely reflecting organic matter complexation with Al³⁺. Minor variations in band intensities among profiles suggest differences in organic matter content and mineral–organic associations, supporting contrasting soil formation processes and varying degrees of organic matter stabilization in soils from Catimbau National Park
Coverage:
Median Latitude: -8.586343 * Median Longitude: -37.241630 * South-bound Latitude: -8.587000 * West-bound Longitude: -37.242278 * North-bound Latitude: -8.585972 * East-bound Longitude: -37.241000
Date/Time Start: 2021-03-16T00:00:00 * Date/Time End: 2021-03-16T00:00:00
Minimum Elevation: 750.0 m * Maximum Elevation: 800.0 m
Event(s):
C001_Profile_1 (Profile 1) * Latitude: -8.587000 * Longitude: -37.241000 * Date/Time: 2021-03-16T00:00:00 * Elevation: 800.0 m * Method/Device: Soil profile (SOIL) * Comment: Soil samples were collected according to the methodology proposed by Santos (2015), which involves describing and sampling soil profiles following standardized pedological procedures.
C001_Profile_2 (Profile 2) * Latitude: -8.586389 * Longitude: -37.241111 * Date/Time: 2021-03-16T00:00:00 * Elevation: 780.0 m * Method/Device: Soil profile (SOIL) * Comment: Soil samples were collected according to the methodology proposed by Santos (2015), which involves describing and sampling soil profiles following standardized pedological procedures.
C001_Profile_3 (Profile 3) * Latitude: -8.586010 * Longitude: -37.242130 * Date/Time: 2021-03-16T00:00:00 * Elevation: 760.0 m * Method/Device: Soil profile (SOIL) * Comment: Soil samples were collected according to the methodology proposed by Santos (2015), which involves describing and sampling soil profiles following standardized pedological procedures.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Clarindo, Analice Nunes | |||
| 2 | Sample code/label | Sample label | Clarindo, Analice Nunes | |||
| 3 | Method comment | Method comm | Clarindo, Analice Nunes | Preparation Method | ||
| 4 | Instrument | Instrument | Clarindo, Analice Nunes | |||
| 5 | Resolution | Resolution | 1/cm | Clarindo, Analice Nunes | Fourier-transform infrared (FTIR) | |
| 6 | Spectral range | Spectral range | Clarindo, Analice Nunes | Fourier-transform infrared (FTIR) | 1/cm | |
| 7 | Wave number | W no | 1/cm | Clarindo, Analice Nunes | Fourier-transform infrared (FTIR) | |
| 8 | Band assignment | Band assignment | Clarindo, Analice Nunes | Fourier-transform infrared (FTIR) | ||
| 9 | Comment | Comment | Clarindo, Analice Nunes |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
72 data points