What absorbs at 968 cm⁻¹ in an FTIR spectrum?

빠른 답변

A band near 968 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.

가능한 작용기 할당

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가능한 재료

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스펙트럼 로직

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

실제 사용

이러한 유형의 질의는 고분자 식별, 미지 플라스틱 스크리닝, QC 문제 해결, 재활용 재료 검증 및 문헌 기반 피크 할당 검토에서 일반적입니다.

일반적인 실수

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검증 조언

모호성이 남아 있는 경우, 특히 혼합물, 분해된 시료 및 충전 폴리머의 경우 DSC, GC-MS 또는 TGA로 가설을 검증하십시오.

이 할당의 배경이 되는 문헌

• Amide 신뢰도 1.0

  “2000cm-1, 1.21mgg-1 baseline established in for a ChlorThe absorption bands of Chlorpyrifos are located at 1549, pyrifosstandardandthenoisemeasuredinthesameregionfor 968cm-1, 1412, 1339, 1165, 1088, 1025 and due to C N a blank spectrum and”

  Armenta 等 - 2005 - A validated and fast procedure for FTIR determinat DOI: 10.1016/j.talanta.2005.03.008
• Alkene (C=C) 신뢰도 1.0

  “and quantified by using Fourier-transform infrared (FTIR) spectroscopy, in the mid-region of 400-4000 cm-1, The FTIR analysis shows that two oil extracts (with and without heat) present a well-defined peak at 968 which represents the double”

  Ariza Ortega 等 - 2012 - Analysis of trans fatty acids production and squal DOI: 10.2478/s11532-012-0104-4
• 신뢰도 1.0

  “cm(cid:1)1, cm(cid:1)1, cm(cid:1)1 Ti-BEA shows clear peaks at 968 960 and 943 as previously described [20].”

  Effect of water treatment on Sn-BEA zeolite: Origin of 960 cm-1 FTIR peak DOI: 10.1016/j.micromeso.2015.02.012
• Acetate 신뢰도 1.0

  “1033 -C-O Stretching Phospholipid w w w w - 968 Bending (out of plane) Phosphatidylcholine w w m m m -CH = CH-(trans)”

  Gao 等 - 2017 - Technical note Characterization of lipid constitu DOI: 10.2527/jas2016.1332
• Acetate 신뢰도 1.0

  “-b 19 1072-1043 -C-O Stretching 1033a 20 1043-1006 -C-O Stretching -HC@CH968a 21 1006-929 (trans)”

  Rapid evaluation of oxidised fatty acid concentration in virgin olive oil using Fourier-transform infrared spectroscopy and multiple linear regression DOI: 10.1016/j.foodchem.2010.06.054
• Alkyl C-H 신뢰도 1.0

  “2 to 2922 cm-1 (as shown in Figure 4b) and 2921 cm-1 (as indicated in Figure 4c) in the hydrochar, while cm-1 cm-1 shifted to 2922 (as shown in Figure 4b) and 2921 (as indicated in Figure 4c) in the hydrochar, the skeletal vibration at 1255”

  Understanding Hydrothermal Dechlorination of PVC by Focusing on the Operating Conditions and Hydrochar Characteristics DOI: 10.3390/app7030256
• Alkyl C-H 신뢰도 1.0

  “the peak of 1655.00 the olefinic C-H out of plane bending vibration at the band of 968.22 cm-1 Furthermore, the peak at 3082.50 corresponds to the =C-H stretching vibrations of both the allyl group and the cm-1 aromatic ring, whereas the ab”

  Tan 等 - 2018 - Synthesis and Characterization of Polybenzoxazine DOI: 10.1063/1.5066866
• Alkene (C=C) 신뢰도 1.0

  “On the other hand, carboxymethyl-ethanolamine was cm-1 968 which is a marker peak of trans double bonds in [26] as a biomarker of phospholipid modification during reported unsaturated fatty acids [14] which may be formed mainly after the Ma”

  Optical screening of diabetes mellitus using non-invasive Fourier-transform infrared spectroscopy technique for human lip DOI: 10.1016/j.jpba.2012.12.009