Sulfate (SO4) — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Sulfate (SO4) tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Characteristic FTIR peaks for Sulfate (SO4)
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 1250 | 3 | 3 | 0.9 |
| 1255 | 2 | 2 | 0.9 |
| 1087 | 2 | 2 | 0.8 |
| 623 | 2 | 1 | 0.9 |
| 600 | 2 | 1 | 0.9 |
| 1260 | 1 | 1 | 0.95 |
| 820 | 1 | 1 | 0.95 |
| 1230 | 1 | 1 | 0.9 |
| 1239 | 1 | 1 | 0.9 |
| 1157 | 1 | 1 | 0.9 |
| 1097 | 1 | 1 | 0.9 |
| 1006 | 1 | 1 | 0.9 |
| 454 | 1 | 1 | 0.9 |
| 1038 | 1 | 1 | 0.9 |
| 1124 | 1 | 1 | 0.9 |
| 676 | 1 | 1 | 0.9 |
| 1089 | 1 | 1 | 0.9 |
| 1121 | 1 | 1 | 0.9 |
| 1076 | 1 | 1 | 0.9 |
| 1004 | 1 | 1 | 0.9 |
| 671 | 1 | 1 | 0.9 |
| 1094 | 1 | 1 | 0.9 |
| 1085 | 1 | 1 | 0.9 |
| 667 | 1 | 1 | 0.9 |
| 1100 | 1 | 1 | 0.9 |
| 1117 | 1 | 1 | 0.9 |
| 1220 | 1 | 1 | 0.9 |
| 1228 | 1 | 1 | 0.9 |
| 1226 | 1 | 1 | 0.9 |
| 805 | 1 | 1 | 0.9 |
Showing the 30 best-supported peaks of 46 total for Sulfate (SO4).
Literature behind these assignments
-
820 cm⁻¹ confidence 0.95
“Explicit assignment: 'new absorption bands at 820 and 1260 ... introduction of the sulfate groups'”
Levdansky 等 - 2021 - Sulfation of arabinogalactan with sulfamic acid un DOI: 10.1007/s00226-021-01341-2 -
1248 cm⁻¹ confidence 0.9
“Peak at 1248 for ester sulfate groups.”
Fauzi 等 - 2020 - Characterization, Disintegration, and Dissolution DOI: 10.1155/2020/3565931 -
1226 cm⁻¹ confidence 0.9
“Text: 'peak between 1228 and 1226 indicated sulphate ester groups'.”
Kaewmanee 等 - 2019 - In vivo prebiotic properties of Ascophyllum nodosu DOI: 10.1007/s10811-019-01794-w -
1220 cm⁻¹ confidence 0.9
“Corresponds to ester sulfate groups.”
Moustafa 等 - 2021 - Preparation and Characterization of Super-Absorbin DOI: 10.3390/polym13244308 -
1117 cm⁻¹ confidence 0.9
“Text: '1117cm-1 when KBr substrate is used as background' and 'determination of sulphate'”
Verma 和 Deb - 2007 - Direct and rapid determination of sulphate in envi DOI: 10.1016/j.talanta.2006.07.056 -
1255 cm⁻¹ confidence 0.9
“Text: 'absorption bands at 1255, 808-817 cm-1, and 859-867 corresponding to sulfate groups'”
Akman 等 - 2020 - Synthesis and characterization of starch sulfates DOI: 10.1016/j.carbpol.2012.07.075 -
1100 cm⁻¹ confidence 0.9
“Text: 'vibration bands referring to the sulphate group (SO4) at 1100 and 667'.”
Carvalho 等 - 2022 - Mortars from the Palace of Knossos in Crete, Greec DOI: 10.3390/min12010030 -
1085 cm⁻¹ confidence 0.9
“Sodium sulfate spectrum exhibits a single broad band peaking at 1085 cm-1.”
Kiefer 等 - 2018 - Infrared Spectroscopic Analysis of the Inorganic D DOI: 10.3390/en11040798
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