N h — FTIR-absorptions-toppe og tildelinger

Hurtigt svar

N h tildeles normalt ved at lede efter en tilbagevendende klynge af karakteristiske toppe frem for et præcist lærebogsnummer. Tabellen nedenfor viser, hvor litteraturen oftest placerer denne gruppe i FTIR, rangeret efter akkumuleret evidens.

Karakteristiske FTIR-toppe for N h

Viser de 30 bedst understøttede toppe ud af 1314 i alt for N h.

Mulige materialer

Spektrumlogik

En funktionel gruppetildeling bliver mere sikker, når flere forventede bånd optræder sammen. Brug denne side til at finde de bedst understøttede peaks, og bekræft derefter, at den samme prøve udviser et sammenhængende mønster snarere end et enkelt isoleret hit.

Anvendelse i virkeligheden

Disse sider er nyttige til analyse af ukendte materialer, topforklaring i rapporter, polymerfejlfinding og verifikation af, om en kandidatmaterialefamilie er kemisk plausibel.

Almindelige fejl

• Brug af én funktionel-gruppe-side som en komplet materialebedømmelse uden at kontrollere resten af spektret.
• Antager, at det stærkeste bånd altid er det mest diagnostiske.
• At glemme, at forarbejdning, tilsætningsstoffer, ældning og blandinger kan flytte eller udvide forventede toppe.

Verifikationsrådgivning

Brug DSC, GC-MS eller TGA, når flere materialefamilier deler lignende bånd, eller når blandings-effekter gør FTIR-tildelingen usikker.

Litteratur bag disse tildelinger

• 1566 cm⁻¹ tillid 1,0

  “1566cm-1, R2 due to NH in-plane bending, triazine stretching In every case a, good linear fit was obtained with valand C-N stretching, respectively, [23] and so, these bands ues >0.999.”

  Armenta 等 - 2004 - Determination of cyromazine in pesticide commercia DOI: 10.1016/j.aca.2004.02.063
• 1649 cm⁻¹ tillid 1,0

  “In 41 cm@1 chitosan, the peaks at 1649 and 1579 are attributed to the The BC formed was removed from the fermenting container 42 amino (NH 2) and N@H bending vibrations respectively.”

  Arikibe 等 - 2019 - pH-Responsive Studies of Bacterial CelluloseChito DOI: 10.1002/slct.201902290
• 3500 cm⁻¹ tillid 1,0

  “NH 2 It is stated that in amines, the N H stretching vibraCoumarins have two characteristically strong absorption 3500-3300cm-1.”

  Arjunan 等 - 2007 - Fourier transform infrared and Raman spectral assi DOI: 10.1016/j.saa.2006.09.044
• 2926 cm⁻¹ tillid 1,0

  “the samples with PG and the highest value in the FG sample, that is, 2923.74, 2926.15, from the CN stretch, CCN deformation and in-plane NH bending modes and is mostly cm-1 cm-1, 2927.71, and 2924.77 cm-1 for PG-FG 0-100, PG-FG 50-50, PG-FG”

  Application of Poultry Gelatin to Enhance the Physicochemical, Mechanical, and Rheological Properties of Fish Gelatin as Alternative Mammalian Gelatin Films for Food Packaging DOI: 10.3390/foods12030670
• 1637 cm⁻¹ tillid 1,0

  “cm(cid:0) 1 granules, including the amylose content, distribution of branch chains of Prominent peak in the region of 1637 revealed the presence of (-N-H) amylopectin, interactions of amylose-amylose and amylose-lipid could amine group (Ng”

  Encapsulating probiotics in novel resistant starch wall material for production of rice flour extrudates DOI: 10.1016/j.lwt.2020.110839
• 482 cm⁻¹ tillid 1,0

  “cm-1 and 1635 due to stretching vibrations of O-H group, the bands assigned at 3275 cmcm-1, - 1 the band at 2922 due to vibrations of C H stretching thee band at 1213 1062cm-1,482cm-1,576cm-1,1535cm-1arethefollowingvibrationsC-Ostretching,N”

  Bio-engineered TiO2 nanoparticles using Ledebouria revoluta extract: Larvicidal, histopathological, antibacterial and anticancer activity DOI: 10.1080/03067319.2020.1718668
• 1485 cm⁻¹ tillid 1,0

  “and N-H stretching is observed at 1485”

  Athawale 和 Desai - 2011 - Silver doped lanthanum chromites by microwave comb DOI: 10.1016/j.ceramint.2011.05.008
• 564 cm⁻¹ tillid 1,0

  “and 564 cm-1 that correspond to the N-H, C-H, C=C CH 3, C-C, S=O, and C-Cl respectively Fig.”

  Avilala 和 Golla - 2019 - ANTIBACTERIAL AND ANTIVIRAL PROPERTIES OF SILVER N DOI: 10.13040/IJPSR.0975-8232.10(3).1223-28