How can you identify goethite from FTIR?
This page summarizes the recurring FTIR evidence reported for goethite, 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 13 cited sources
Quick answer
goethite 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
| Functional group | Evidence |
|---|---|
| Hydroxyl (O-H) | 16 |
| C-O single bond | 6 |
| Aromatic ring | 5 |
| Amide | 4 |
| Metal oxygen | 4 |
| Silicon-oxygen (Si-O) | 4 |
| Ring structure | 3 |
| Methacrylate | 3 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of goethite, 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
-
confidence 0.9
goethite
Dhakal 等 - 2021 - Reactions of nitrite with goethite and surface Fe( DOI: 10.1016/j.scitotenv.2021.146406 -
confidence 0.9
goethite
Spectroscopic characterization of iron ores formed in different geological environments using FTIR, XPS, Mössbauer spectroscopy and thermoanalyses DOI: 10.1016/j.saa.2014.10.090 -
confidence 0.9
goethite
Dynamic adsorption process of phthalate at goethite/aqueous interface: An ATR-FTIR study DOI: 10.1016/j.colsurfa.2013.10.021 -
confidence 0.8
goethite
Villalobos 和 Leckie - 2001 - Surface complexation modeling and FTIR study of ca DOI: 10.1006/jcis.2000.7341 -
confidence 0.8
goethite
Efficiency of Fe3O4 Nanoparticles with Different Pretreatments for Enhancing Biogas Yield of Macroalgae Ulva intestinalis Linnaeus DOI: 10.3390/molecules26165105 -
confidence 0.7
goethite
“Self arranged Cactis” as new goethite morphology from the natural corrosion process of SAE 1020 carbon steel DOI: 10.1016/j.heliyon.2019.e02771 -
confidence 0.7
goethite
Yang 等 - 2013 - Molecular-Scale Study of Salicylate Adsorption and DOI: 10.1021/jp4027578 -
confidence 0.7
goethite
Effects of Interfaces of Goethite and Humic Acid-Goethite Complex on Microbial Degradation of Methyl Parathion DOI: 10.3389/fmicb.2018.01748 -
confidence 0.6
goethite
Prasad 等 - 2006 - In situ FTIR study on the dehydration of natural g DOI: 10.1016/j.jseaes.2005.05.005 -
confidence 0.6
goethite
An integrated toolkit using multiple methods for determining the potential sources of iron and manganese in groundwater: a case study from the lower Kelantan River Basin, Malaysia DOI: 10.1007/s12665-021-09756-7
See goethite in your own spectrum
Upload your FTIR spectrum and get AI-assisted polymer analysis and peak-by-peak interpretation from your own spectrum.