What absorbs at 3676 cm⁻¹ in an FTIR spectrum?

Ateb cyflym

A band near 3676 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.

Aseiniadau grŵp swyddogaethol posibl

Mae＇r safle＇n adlewyrchu tystiolaeth llenyddiaeth gronnwyd, nid rheol awdurdodol sengl. Cadarnhewch bob amser yn erbyn eich cyd-destun sampl.

Deunyddiau posibl

Mae deunyddiau＇n cael eu dangos dim ond pan fydd yr un gronfa lenyddiaeth yn cefnogi＇r band hwn ac o leiaf un brig nodweddiadol ychwanegol.

Rhesymeg sbectrwm

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 3676 cm⁻¹ is usually not enough for material identification by itself.

Defnydd yn y byd go iawn

Mae＇r math hwn o ymholiad yn gyffredin mewn adnabod polymer, sgrinio plastig anhysbys, datrys problemau QC, dilysu deunydd wedi＇i ailgylchu, ac adolygiad o aseiniad copa wedi＇i gefnogi gan lenyddiaeth.

Camgymeriadau cyffredin

• Trin un band ynysig fel prawf o ddeunydd heb wirio o leiaf un neu ddau gopa cefnogol.
• Anwybyddu gorgyffwrdd: gall grwpiau swyddogaethol lluosog gyfrannu ger yr un rhif ton.
• Hepgor dilysu pan fo ychwanegion, cymysgeddau, ocsideiddio, neu halogiad yn gallu ystumio＇r sbectrwm.

Cyngor dilysu

Pan fo amwysedd yn parhau, dilyswch y rhagdybiaeth gyda DSC, GC-MS, neu TGA, yn enwedig ar gyfer cymysgeddau, samplau dirywiedig, a pholymerau llawn.

Llenyddiaeth y tu ôl i＇r aseiniadau hyn

• N h hyder 1.0

  “The absorption at cm1 3676 and 3695 in chitin and chitosan respectively are due to the NH and OH functional groups in both of them.”

  Green Synthesis, Structural Characterization and Photocatalytic Activities of Chitosan-ZnO Nano‐composite DOI: 10.1007/s10904-021-01988-1
• Hydroxyl (O-H) hyder 1.0

  “It is however worth to note that, differently to what previously reported for not functionalized UiOcm1 66 and UiO-67 [5, 6, 114], the band at 3676 associated to the  3-OH present at the Zr 6-octahedron do not disappeared completely by he”

  Braglia 等 - 2017 - Exploring structure and reactivity of Cu sites in DOI: 10.1016/j.cattod.2016.02.039
• Hydroxyl (O-H) hyder 1.0

  “cm-1 After the modification of talc with Fe 3O 4, a small and sharp band at 3676 is attributed to the inner-surface O-H group stretching mode [36].”

  Preparation and Characterization of Magnetite Talc (Fe3O4@Talc) Nanocomposite as an Effective Adsorbent for Cr(VI) and Alizarin Red S Dye DOI: 10.3390/ma15093401
• Hydroxyl (O-H) hyder 1.0

  “to the symmetric vibration of carbon-oxygen-carbon or the stretching vibrational bands cm-1 of siloxane group from talc [31], whereas the band at 3676 could be assigned to cm-1 the vibrations of OH groups linked with Mg;”

  Characterization and Combustion Behavior of Single-Use Masks Used during COVID-19 Pandemic DOI: 10.3390/ma14133501
• hyder 0.8

  “Listed under same assignment.”

  Kumar 等 - 2015 - Fourier transform infrared spectroscopy (FTIR) ana DOI: 10.1007/s13197-015-1959-0