RESULT PAGE
aromatic / sulfate
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FTIR Analysis Report
Low confidence
aromatic / sulfate
Sample & Measurement Parameters
Report No.
20250804181207658540737
Date
Spectral Range (cm⁻¹)
N/A
Baseline
AsLS baseline correction
Library match
29%
Identification Result
29%The FTIR spectrum is most consistent with an aromatic matrix containing sulfate or sulfonate groups, showing weak similarity to pyridine-4-carboxylic acid (library match 0.0). Additional spectral features point to the presence of cellulose-like polysaccharides and polystyrene-like aromatic components, indicating a composite or mixed organic material FTIR In-Depth Interpretation was not selected for this task, so this section shows the library-search result only and no deep AI interpretation was run.
Detailed interpretation
- Top library match: pyridine-4-carboxylic acid #324
- No clear evidence is observed for the pyridine ring N–H stretching or the strong carbonyl peak expected for a pure pyridine-4-carboxylic acid, and the library similarity is effectively zero, urging caution against a single‑component interpretation.
- The extent of contribution from polysaccharide, polystyrene, and inorganic phases cannot be deconvoluted from the current data; the exact stoichiometry and morphology of the composite remain undetermined.
- Sulfate assignments, while chemically plausible, rely on group‑frequency correlations and library trends rather than on a single, unequivocal spectral marker.
Library Comparison
Library spectrum will appear here.
Library Search Results — Top 15 Candidates
| Rank | Match % | Compound | SMILES | Spectrum No. | Action |
|---|---|---|---|---|---|
| Loading library candidates... | |||||
Peak Analysis
★ = Literature-supported assignment| # | Wavenumber (cm⁻¹) | Absorbance | Assignment | Citation | Assignment status | |
|---|---|---|---|---|---|---|
| 1 | · | 2144 | 1.00 | - | - | - |
| 2 | · | 1078 | 1.00 | - | - | - |
| 3 | · | 2112 | 1.00 | - | - | - |
| 4 | · | 897 | 1.00 | - | - | - |
| 5 | · | 2057 | 1.00 | - | - | - |
| 6 | · | 1048 | 1.00 | - | - | - |
| 7 | · | 1178 | 1.00 | - | - | - |
| 8 | · | 806 | 1.00 | - | - | - |
| 9 | · | 2065 | 0.21 | - | - | - |
| 10 | · | 2049 | 0.21 | - | - | - |
| 11 | · | 798 | 0.21 | - | - | - |
| 12 | · | 814 | 0.21 | - | - | - |
| 13 | · | 2119 | 0.21 | - | - | - |
| 14 | · | 1941 | 0.20 | - | - | - |
| 15 | · | 1185 | 0.20 | - | - | - |
| 16 | · | 2104 | 0.20 | - | - | - |
| 17 | · | 1170 | 0.20 | - | - | - |
| 18 | · | 2137 | 0.19 | - | - | - |
| 19 | · | 1085 | 0.19 | - | - | - |
| 20 | · | 1041 | 0.19 | - | - | - |
| 21 | · | 904 | 0.19 | - | - | - |
| 22 | · | 1070 | 0.19 | - | - | - |
| 23 | · | 1056 | 0.19 | - | - | - |
| 24 | · | 889 | 0.19 | - | - | - |
Appendix — Raw Spectrum
Discussion
Comments and follow-up evidence
Use this area to continue the interpretation, ask questions, or add extra verification evidence.