Ammonium — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor Ammonium har tendens til at absorbere, samlet fra publiceret litteratur og rangeret efter understøttende bevis. Hver tildeling kan spores til en kilde (DOI) og krydsvalideres mod vores 130.000+ referencespektre og vidensgraf.
Backed by 8 cited sources
Hurtigt svar
Ammonium 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 Ammonium
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 400 | 4 | 4 | 1,0 |
| 1435 | 4 | 3 | 1,0 |
| 402 | 3 | 3 | 1,0 |
| 965 | 3 | 3 | 1,0 |
| 930 | 3 | 3 | 1,0 |
| 1625 | 2 | 2 | 1,0 |
| 1660 | 2 | 2 | 1,0 |
| 1680 | 2 | 2 | 1,0 |
| 1400 | 2 | 2 | 1,0 |
| 3200 | 2 | 2 | 1,0 |
| 3271 | 2 | 2 | 1,0 |
| 1450 | 2 | 2 | 1,0 |
| 1510 | 2 | 2 | 1,0 |
| 3040 | 2 | 1 | 1,0 |
| 966 | 2 | 1 | 1,0 |
| 1313 | 1 | 1 | 1,0 |
| 1605 | 1 | 1 | 1,0 |
| 450 | 1 | 1 | 1,0 |
| 1248 | 1 | 1 | 1,0 |
| 1265 | 1 | 1 | 1,0 |
| 1401 | 1 | 1 | 1,0 |
| 1148 | 1 | 1 | 1,0 |
| 2342 | 1 | 1 | 1,0 |
| 2363 | 1 | 1 | 1,0 |
| 1470 | 1 | 1 | 1,0 |
| 700 | 1 | 1 | 1,0 |
| 1730 | 1 | 1 | 1,0 |
| 3400 | 1 | 1 | 1,0 |
| 2970 | 1 | 1 | 1,0 |
| 1579 | 1 | 1 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 132 i alt for Ammonium.
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
-
3302 cm⁻¹ tillid 1,0
“Amongst the gelatin the amide A group was recorded at 3304, 3291, 3292, and 3302 cm-1 for PG-FG 100-0, PGfilms, FG showed the lowest peak amide B wave number, indicating the single bond NH3 FG 50-50, PG-FG 0-100, and BG, respectively, which”
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 -
1660 cm⁻¹ tillid 1,0
“cm-1is (cid:3) at 1435 assigned to the 4(F) bending mode of Brönsted acid (cid:3) bound ammonium ions [49,51,53], but the corresponding sites 2 cm-1 (E) vibration mode is absent at 1660 [59].”
Low-temperature selective catalytic reduction of NO with NH3 over V/ZrO2 prepared by flame-assisted spray pyrolysis: Structural and catalytic properties DOI: 10.1016/j.apcatb.2012.08.012 -
1572 cm⁻¹ tillid 1,0
“The intense absorption 3 cm-1 cm-1 bands at 1572 and 823 are due to the asymmetric deformation and rocking NH+ cm-1 vibrations of 3.”
Crystal Growth, Spectral, Optical, Laser damage, Photoconductivity and Dielectric Properties of Semiorganic L-cystine hydrochloride Single Crystal DOI: 10.1016/j.saa.2015.06.113 -
402 cm⁻¹ tillid 1,0
“The ESCA spectrum of treated PET revealed that the surface chemistry obtained after plasma polymerizing TFE was one clearly dominated by CF and CF moieties, 2 asdemonstratedbythelargepeaksappearingat291.1and289.5eV,respectively.Asexpected,s”
Cohn 和 Stern - 2000 - Sequential surface derivatization of PET films DOI: 10.1021/ma9900784 -
3000 cm⁻¹ tillid 1,0
“The When hBN is decomposed into boric acid and cm-1 3000 peak is assigned to hydrogen bonding of B 2O species 3 ammonia, the boric acid could dehydrate on the cm-1 with the OH groups [21].”
Garro Mena 和 Hohn - 2021 - Modification of hexagonal boron nitride by thermal DOI: 10.1007/s10853-020-05719-8 -
2847 cm⁻¹ tillid 1,0
“The analysis of structural changes conducted by XRD analysis showed the peak shifting from cm-1 19.89° to 16.1° and specific peak spectra FTIR of 2846.93 due to increase basal spacing from ammonium intercalation.”
Hakim 等 - 2023 - Ammonium-Assisted Intercalation of Java Bentonite DOI: 10.12911/22998993/156665 -
3416 cm⁻¹ tillid 1,0
“actiontocupricionsinsolutions, InFigure 4a,thesodium the adsorption band of the S-H and N-H groups in ammonium sulfide during the (NH4)2S cm-1, sulfide FTIR spectrum revealed one adsorption band at 3416 which corresponded reaction to cupric”
Ibrahim 等 - 2022 - Effect of Ammonium Sulfide on Sulfidization Flotat DOI: 10.3390/min12101193 -
3250 cm⁻¹ tillid 1,0
“The N-H stretch feature is located at cm(cid:4)1 cm(cid:4)1, (cid:2)2840 3250 on one hand and the N-H stretch peaks at 3250and is assigned to the symmetric stretching of NH 3 cm(cid:4)1 3200 on the other hand is expected to be much lower th”
Leewis 等 - 2006 - Ammonia adsorption and decomposition on silica sup DOI: 10.1016/j.apsusc.2005.12.115
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