What absorbs at 1348 cm⁻¹ in an FTIR spectrum?
A band near 1348 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Jibu la haraka
A band near 1348 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Ugawaji unaowezekana wa vikundi vya kazi
| Kikundi cha kazi | Ukweli unaounga mkono | Vyanzo vilivyotajwa | Uaminifu wa juu |
|---|---|---|---|
| N-O bond | 2 | 2 | 1.0 |
| Carboxyl (COOH) | 1 | 1 | 1.0 |
| Hydroxyl (O-H) | 1 | 1 | 1.0 |
| Nitro (NO2) | 1 | 1 | 1.0 |
| Secondary amine | 1 | 1 | 1.0 |
| C n single bond | 1 | 1 | 1.0 |
| Amide | 1 | 1 | 1.0 |
| Protein | 1 | 1 | 1.0 |
| Alkyl C-H | 1 | 1 | 1.0 |
Cheo kinaonyesha ushahidi wa fasihi uliokusanywa, si sheria moja yenye mamlaka. Thibitisha kila mara dhidi ya mazingira ya sampuli yako.
Nyenzo zinazowezekana
| Nyenzo | Vilele vya usaidizi | Vikundi vinavyoingiliana | Vyanzo vilivyotajwa |
|---|---|---|---|
| activated carbon | 1348, 1575, 1210 | Hydroxyl (O-H), Carboxyl (COOH) | 1 |
Nyenzo zinaonyeshwa tu wakati mkusanyiko sawa wa fasihi unaunga mkono bendi hii na angalau kilele kimoja cha ziada cha sifa.
Mantiki ya wigo
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 1348 cm⁻¹ is usually not enough for material identification by itself.
Matumizi ya ulimwengu halisi
Aina hii ya swala ni ya kawaida katika utambuzi wa polima, uchunguzi wa plastiki isiyojulikana, utatuzi wa shida za QC, uthibitishaji wa nyenzo zilizosindikwa, na ukaguzi wa ugawaji wa kilele unaoungwa mkono na fasihi.
Makosa ya kawaida
- Kuchukua bendi moja iliyotengwa kama uthibitisho wa nyenzo bila kuangalia angalau kilele kimoja au viwili vya usaidizi.
- Kupuuza mwingiliano: vikundi vingi vya utendaji vinaweza kuchangia karibu na nambari ya wimbi sawa.
- Kuruka uthibitishaji wakati viongezi, mchanganyiko, uoksidishaji, au uchafuzi unaweza kupotosha wigo.
Ushauri wa uthibitishaji.
Wakati utata unabaki, thibitisha nadharia kwa kutumia DSC, GC-MS, au TGA, hasa kwa mchanganyiko, sampuli zilizoharibika, na polima zilizojazwa.
Fasihi nyuma ya ugawaji huu
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Alkyl C-H uaminifu 1.0
“Component loadings indicate that POM has a tendency for higher absorbance than the cm-1, silt at the broad peak around 1348 that indicates aliphatics and phenolics.”
Calderon 等 - 2011 - Chemical Differences in Soil Organic Matter Fracti DOI: 10.2136/sssaj2009.0375 -
N-O bond uaminifu 1.0
“The metastable solid phase transition from the initial solid to a metastable solid phase of NaNO (cid:3)87% (cid:3)96% deliquesced completely in the region from to RH according to the fact that the (cid:2) 3cm-1 3-NO band showed two overlap”
Lu 等 - 2008 - Molecular events in deliquescence and efflorescenc DOI: 10.1063/1.2973623(cid:5) -
uaminifu 1.0
“Not identified by CR isotope labeling of the of lysine, but was assigned to a related mode cm-1 with the 1348 band of BR.”
Maeda 等 - 1999 - Chromophore-protein-water interactions in the L in DOI: 10.1021/bi9907072 -
Protein uaminifu 1.0
“Stained sections were 1348cm1 and associated with collagen as well as the peak at”
Maribel Mata-Miranda 等 - 2019 - Characterization of the Biological Fingerprint and DOI: 10.1155/2019/1241452 -
Amide uaminifu 1.0
“0.0001 1452.136 1451.171 8 3 str 0.506 1401.995 9 1401.995 -COOC=O of 0.036 1345.106 10 Carboxyl groups COO and asymmetric C-N stretching 1347.998 3-)”
Martinez-Cuazitl 等 - 2023 - Clinical, Biochemical, and ATR-FTIR Spectroscopic DOI: 10.1155/2023/3423183 -
uaminifu 1.0
“Explicit assignment: 'characteristic peaks at ~1348 cm-1 (D band)'.”
Effect of Iron Loading on the Catalytic Activity of Fe/N-Doped Reduced Graphene Oxide Catalysts via Irradiation DOI: 10.3390/app11010205 -
N-O bond uaminifu 1.0
“The band experienced at 1348 can be attributed adsorption capacity of activated carbon for the adsorption to the N - O symmetric stretch in the nitro compounds.”
Rutto 等 - 2019 - Adsorption of lead ions onto chemically activated DOI: 10.24425/aep.2019.130245 -
Hydroxyl (O-H) uaminifu 1.0
“[37] found that the ATR-FTIR spectra of 2O 3-adsorbed 1617 cm-1, 1458 cm-1, and 436 cm-1, respectively, indicating that Fe-O, CH3/COO and -OH in HFO cm-1 humic acid showed two new bands at 1348 and 1470 during the initial time points, which”
Removal of Tetracycline by Hydrous Ferric Oxide: Adsorption Kinetics, Isotherms, and Mechanism DOI: 10.3390/ijerph16224580
Una wigo wenye bendi hii?
Pakia wigo wako wa FTIR na upate ripoti kamili ya tafsiri — ugawaji wa vilele na marejeleo ya fasihi, ulinganishaji wa maktaba, na mlolongo wa ushahidi wenye kiwango cha uaminifu — kwa sekunde.