How can you identify CO2 from FTIR?
This page summarizes the recurring FTIR evidence reported for CO2, 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 18 cited sources
Quick answer
CO2 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
| কার্যকরী গ্রুপ | প্রমাণ |
|---|---|
| Carbon dioxide | 7 |
| Hydroxyl (O-H) | 2 |
| Carbonate | 1 |
| Carbohydrate | 1 |
| Water (H2O) | 1 |
| Nitrile | 1 |
| Alkyl C-H | 1 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of CO2, 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
-
আত্মবিশ্বাস 0.8
CO2
Schaden 等 - 2007 - Quantum cascade laser modulation for correction of DOI: 10.1007/s00340-006-2483-8 -
আত্মবিশ্বাস 0.8
CO2
David 等 - 2011 - Electrical properties and reactivity under air-CO DOI: 10.1016/j.cej.2011.03.079 -
আত্মবিশ্বাস 0.8
CO2
Eigenmann 等 - 2006 - Influence of measuring conditions on the quantific DOI: 10.3929/ethz-b-000000584 -
আত্মবিশ্বাস 0.7
CO2
Gunnarsson 等 - 2021 - On the interference of urea with CO2CO32chemist DOI: 10.1016/j.carbpol.2020.117059 -
আত্মবিশ্বাস 0.7
CO2
Li Xiang-Xian 等 - 2013 - Carbon isotope ratio analysis in CO2 based on Four DOI: 10.7498/aps.62.030202 -
আত্মবিশ্বাস 0.7
CO2
Warneke 等 - 2005 - Shipborne solar absorption measurements of CO2, CH DOI: 10.1029/2000JD900191 -
আত্মবিশ্বাস 0.6
CO2
FTIR in situ measurement of swelling and CO2 sorption in acrylic polymers at high CO2 pressures DOI: 10.1016/j.supflu.2022.105534 -
আত্মবিশ্বাস 0.5
CO2
The Production of Ketene and C5O2 from CO2, N2 and CH4 in a Non-thermal Plasma Catalysed by Earth-Abundant Elements: An In-Situ FTIR Study DOI: 10.1007/s11090-018-9889-z -
আত্মবিশ্বাস 0.5
CO2
Wang 等 - 2016 - Towards understanding the variability in biospheri DOI: 10.5194/acp-16-2123-2016 -
আত্মবিশ্বাস 0.5
CO2
Zanone 等 - 2022 - QUANTITATIVE SPECIATION OF THE LIQUID PHASE BY FTI DOI: 10.21577/0100-4042.20170883
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