What absorbs at 485 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 485 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.

可能性のある官能基アサイン

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可能性のある材料

同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。

スペクトルロジック

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

実使用例

この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。

よくある間違い

• 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
• 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
• 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。

検証アドバイス

曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。

これらのアサインの根拠となる文献

• 信頼度 1.0

  “The FTIR spectra results show (Figure 6) that the absorption peaks at cm-1 485, 519, and 633 are attributed to the Al-O structural vibration and are characteristic peaks of Al 2O 3, consistent with the standard infrared peaks of corundum [1”

  Study on Gemological Characteristics of Blue Sapphires from Baw-Mar Mine, Mogok, Myanmar DOI: 10.3390/cryst11111275
• Metal oxygen 信頼度 1.0

  “The peak at 485 corresponds to the bending vibration of V-O-V [20].”

  Saravanakumar 等 - 2018 - Role of NaOH concentration on synthesis and charac DOI: 10.1063/1.5047993
• Metal oxygen 信頼度 1.0

  “Earlier workers have reported the presence of Table 3) which almost matched with the data recorded by cm-1 cm-1 Zn-O 400-500 theDebye-Scherrerprocess.Table4demonstratestherelation the band at 485 [58], 442 [59],”

  Udhayan 等 - 2021 - Evaluation of Bioactive Potential of a Tragia invo DOI: 10.1007/s12668-021-00864-z
• Metal oxygen 信頼度 1.0

  “Hence, the relative intensity of TiOH(948cm-1),Ti-O-Ti band(485cm-1)”

  Wan 等 - 2006 - Structure and thermal properties of titanium dioxi DOI: 10.1007/s00289-006-0506-6
• Metal oxygen 信頼度 1.0

  “Zn-O stretching vibrations are shifted to 495 cm-1 from 485 cm-1 with the addition of Cu-O Peak at 485”

  Successive Photocatalytic Degradation of Methylene Blue by ZnO, CuO and ZnO/CuO Synthesized from Coriandrum sativum Plant Extract via Green Synthesis Technique DOI: 10.3390/cryst13020281
• Metal oxygen 信頼度 1.0

  “2 cm-1 300 (cid:3)C a wide band at 400-500 with maximum at and 500 (cid:3)C almost a plateau in sample mass can be cm-1 about 485 specific to Cu-O vibrations [33] appears.”

  Synthesis of anisotropic Cu2-xS-based nanostructures by thermal oxidation DOI: 10.1007/s10973-019-08622-w
• Acetate 信頼度 1.0

  “501 νCdO νC-O available, by comparing the position of the bands with charactercoordinates, and the stretching mode, respec485 502 tively.41,73,77 istic bands of similar molecules.”

  Lopes 等 - 2011 - Photochemistry and Vibrational Spectra of Matrix-I DOI: 10.1021/jp110705c
• Acetate 信頼度 1.0

  “C-O-C likeamines,phenols,alcohols,saponins,carboxylic acids, gave rise to the peak at  485 Antifungal and cytotoxic activities of AgNPs Fourier-transform Si-AgNPs.”

  Rizwana 等 - 2022 - Biosynthesis and characterization of silver nanopa DOI: 10.1515/gps-2022-0048