What absorbs at 884 cm⁻¹ in an FTIR spectrum?

快速回答

A band near 884 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.

可能的官能基指派

排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。

可能的材料

僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。

光譜邏輯

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

實際使用

此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。

常見錯誤

• 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
• 忽略重疊：多個官能團可能在相同波數附近貢獻。
• 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。

驗證建議

當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。

這些指派背後的文獻

• 信心 1.0

  “659.7 CO32(cid:2) u2 Out-of-plane bending vibration of 883.7 Strong u3 929.6 Very strong Si-O asymmetric stretching vibration of silicate SO42 u3 S-O stretching vibration of 1097 Small shoulder 1114.2”

  Theoretical and experimental study of structures and properties of cement paste The nanostructural aspects of C–S–H DOI: 10.1016/j.jpcs.2011.05.001
• Ring structure 信心 1.0

  “Fourier transform infra-red (FTIR) analysis cm-1 confirm 3:Ce3+ cm-1 The FTIR spectra of CaSiO phosphor was recorded in the range 400 - 4000 to the functional groups presentintheobtainedsamples,Fig.2.FTIRspectrashowstrongtransmittancepeaksa”

  Dhanu 等 - 2020 - Photoluminescence of mixed phase CaSiO3Ce3+ nanop DOI: 10.1016/j.ijleo.2020.165139
• Aromatic ring 信心 1.0

  “9 is attributed to 1,4-disubstitution of the aromatic ring inpolyaniline.However,therearethreepeaksat884(w),854 (w)cm-1 (m), and 800 on curve 1 in Fig.”

  Li 和 Mu - 2005 - The electrochemical activity of sulfonic acid ring DOI: 10.1016/j.synthmet.2004.12.015
• Carbonate 信心 1.0

  “Furthermore, a closer look atthe singlet band 2-1 at 861-864 is probably due to the n ACC.15,32,33 absorption band of carbonate groups from 2-3 singlet reveals a progressive peak shift from 884 (keel), n cm(cid:2)1 887 (needles), to 888 (pl”

  Long 等 - 2012 - From synthetic to biogenic Mg-containing calcites DOI: 10.1039/c2cp22453d
• 信心 1.0

  “The traces of the organic cm-1 materials from the PVP were at 1535 and 2787 and cm-1, are associated with Si-O stretching at 884, and 889 could be attributed to C-H bending vibrations [47, 48].”

  Alibe 等 - 2019 - Effects of polyvinylpyrrolidone on structural and DOI: 10.1007/s10973-018-7874-7
• Protein 信心 1.0

  “cm-1 Increase in absorption at ~884 due to alterations in phosphorylated proteins suggest that more extensive phosphorylation occurs in malignant compared to benign samples.”

  ATR-FTIR spectroscopy as adjunct method to the microscopic examination of hematoxylin and eosin-stained tissues in diagnosing lung cancer DOI: 10.1371/journal.pone.0233626
• 信心 1.0

  “ESI-MS molecular-ion peak 884.42, corresponding to H+ + 1H [Zn(L5) ].”

  Gusev 等 - 2020 - Synthesis, Photoluminescence and Electrical Study DOI: 10.3390/ma13245698
• 信心 1.0

  “The band at cm-1 δ corresponds to the sAl-O-H mode of boehmite 1,072 cm-1 and the bands at 884, 740, 621, and 479 are attributed Al-O to the bonds of boehmite (Li et al.”

  Liu 等 - 2012 - Dechlorinating transformation of propachlor throug DOI: 10.1007/s11368-012-0506-0)