How can you identify CO from FTIR?

Quick answer

CO 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

Spectrum logic

The logic here is evidence aggregation: repeated literature mentions of CO, 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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  Cailteau 等 - 2011 - In situ gas monitoring in clay rocks mathematical DOI: 10.1039/c0ay00622j
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  Hanawa 等 - 2009 - In situ ATR-FTIR study of bulk CO oxidation on a p DOI: 10.1016/j.electacta.2009.05.061
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  The effect of Mn and Co dual-doping on the structural, optical, dielectric and magnetic properties of ZnO nanostructures DOI: 10.1039/d2ra01798a
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  Highly active and selective photochemical reduction of CO2 to CO using molecular-defined cyclopentadienone iron complexes DOI: 10.1039/c6cc01671e
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  Abbet 等 - 2001 - Identification of defect sites on MgO(100) thin fi DOI: 10.1021/ja0157651
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  Retrieval of Metop-A/IASI N2O Profiles and Validation with NDACC FTIR Data DOI: 10.3390/atmos12020219
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  Combined studies of DFT atomistic modelling and in-situ FTIR spectroscopy on surface oxidants and CO oxidation at Ru electrodes DOI: 10.1016/j.jelechem.2012.10.027
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  CO as a Probe Molecule to Study Surface Adsorbates during Electrochemical Oxidation of Propene DOI: 10.1002/celc.202001162
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  Te 等 - 2016 - Seasonal variability of surface and column carbon DOI: 10.5194/acp-16-10911-2016
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  van den Bekerom 等 - 2017 - Non-equilibrium Microwave Plasma for Efficient Hig DOI: 10.3791/55066