How can you identify CaCO3 from FTIR?
This page summarizes the recurring FTIR evidence reported for CaCO3, 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 15 cited sources
Quick answer
CaCO3 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
| Funktionel gruppe | Bevis |
|---|---|
| Carbonate | 9 |
| Alkyl C-H | 3 |
| Phosphate (PO4) | 3 |
| Water (H2O) | 3 |
| Hydroxyl (O-H) | 3 |
| C-O single bond | 3 |
| Silicon-oxygen (Si-O) | 2 |
| Silicon (Si) | 2 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of CaCO3, 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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Experimental measurement and modeling of asphaltene adsorption onto iron oxide and lime nanoparticles in the presence and absence of water DOI: 10.1038/s41598-022-27335-z -
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Chong 等 - 2014 - Polymorphs Calcium Carbonate on Temperature Reacti DOI: 10.1063/1.4895169 -
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Shape, Microstructure, and Chemical Composition of Pearls from the Freshwater Clam Diplodon chilensis Native to South America DOI: 10.3390/ani13132231 -
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Habte 等 - 2019 - Synthesis of Nano-Calcium Oxide from Waste Eggshel DOI: 10.3390/su11113196 -
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Romeo 和 Fanovich - 2008 - Synthesis of tetracalcium phosphate from mechanoch DOI: 10.1007/s10856-008-3403-8 -
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Wagner 等 - 2020 - Quality assessment of mixed plastic flakes from Wa DOI: 10.1007/978-3-319-03464-5_8 -
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Synthesis of CaCO3 using CO2 at room temperature and ambient pressure DOI: 10.1016/j.matlet.2016.12.030 -
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AlBadr 等 - 2020 - The effectiveness of oyster filler on the physical DOI: 10.1063/5.0031467 -
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Experimental data on the characterization of hydroxyapatite synthesized from biowastes DOI: 10.1016/j.dib.2019.104485 -
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Hydrogen production from autothermal CO2 gasification of cellulose in a fixed-bed reactor: Influence of thermal compensation from CaO carbonation DOI: 10.1016/j.ijhydene.2022.02.018
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