How can you identify soil from FTIR?
This page summarizes the recurring FTIR evidence reported for soil, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 22 cited sources
Quick answer
soil is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Funktionell grupp | Bevis |
|---|---|
| Hydroxyl (O-H) | 11 |
| Alkyl C-H | 7 |
| Carboxyl (COOH) | 6 |
| Methacrylate | 6 |
| Acetate | 6 |
| Silicon-oxygen (Si-O) | 5 |
| Methoxy (OCH3) | 5 |
| C-O single bond | 5 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of soil, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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Cankur 等 - 2005 - Flow injection-hydride generation-infrared spectro DOI: 10.1016/j.talanta.2004.12.035 -
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Verma 和 Deb - 2007 - Direct and rapid determination of sulphate in envi DOI: 10.1016/j.talanta.2006.07.056 -
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Marsh 等 - 2019 - Influence of clay minerals and associated minerals DOI: 10.1016/j.conbuildmat.2019.116816 -
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Shafiquzzaman 等 - 2022 - Sawdust Recycling in the Development of Permeable DOI: 10.3390/su141811115 -
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Soil variability description using Fourier transform mid-infrared photoacoustic spectroscopy coupling with RGB method DOI: 10.1016/j.catena.2017.01.005 -
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Maynard 和 Johnson - 2018 - Applying fingerprint Fourier transformed infrared DOI: 10.2489/jswc.73.4.443. -
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Parikh 等 - 2014 - Soil Chemical Insights Provided through Vibrationa DOI: 10.1016/B978-0-12-800132-5.00001-8 -
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Shahariar 等 - 2022 - Impact of short-rotation willow as riparian land-u DOI: 10.21203/rs.3.rs-568432/v1 -
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Demyan 等 - 2013 - Combining a coupled FTIR-EGA system and in situ DR DOI: 10.5194/bg-10-2897-2013 -
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Phytoremediation of dye contaminated soil by Leucaena leucocephala (subabul) seed and growth assessment of Vigna radiata in the remediated soil DOI: 10.1016/j.sjbs.2013.12.001
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