Carbon dioxide — Puncak serapan FTIR dan tugasan

Jawapan pantas

Carbon dioxide biasanya ditetapkan dengan mencari kelompok berulang puncak ciri dan bukan satu nombor tepat buku teks. Jadual di bawah menunjukkan di mana literatur paling kerap meletakkan kumpulan ini dalam FTIR, yang disusun mengikut bukti terkumpul.

Puncak FTIR ciri untuk Carbon dioxide

Menunjukkan 30 puncak terbaik disokong daripada 156 jumlah untuk Carbon dioxide.

Logik spektrum

Tugasan kumpulan berfungsi menjadi lebih yakin apabila beberapa jalur yang dijangkakan muncul bersama. Gunakan halaman ini untuk mencari puncak yang paling disokong, kemudian sahkan bahawa sampel yang sama menunjukkan corak yang koheren dan bukannya satu hit terpencil.

Penggunaan dunia sebenar

Halaman-halaman ini berguna untuk analisis bahan yang tidak diketahui, penjelasan puncak dalam laporan, penyelesaian masalah polimer, dan mengesahkan sama ada keluarga bahan calon adalah boleh dipercayai secara kimia.

Kesilapan biasa

• Menggunakan satu halaman kumpulan berfungsi sebagai keputusan bahan lengkap tanpa memeriksa spektrum yang lain.
• Dengan menganggap jalur yang paling kuat sentiasa menjadi yang paling diagnostik.
• Melupakan bahawa pemprosesan, bahan tambahan, penuaan, dan campuran boleh mengalihkan atau melebarkan puncak yang dijangkakan.

Nasihat pengesahan

Gunakan DSC, GC-MS, atau TGA apabila beberapa keluarga bahan berkongsi jalur yang serupa atau apabila kesan campuran menyebabkan tugasan FTIR tidak pasti.

Literatur di sebalik penetapan ini

• 2358 cm⁻¹ keyakinan 1.0

  “Broad [20, 35] vibration 2358 vibrational CO Carbon dioxide Sharp”

  Aziz 等 - 2023 - Water remediation capability of cubic-phase CdS na DOI: 10.15251/DJNB.2023.181.203
• 1000 cm⁻¹ keyakinan 1.0

  “The deformation band of C=O at around 1000 and cm-1 absorption peaks observed ordinary between 2300 and 2400 due to adsorbed CO 2”

  Structural and magnetic properties of Co-doped ZnO thin films grown by ultrasonic spray pyrolysis method DOI: 10.1016/j.spmi.2016.11.069
• 2363 cm⁻¹ keyakinan 1.0

  “The band at 2363 is due to cm-1 CO2, which is generally observed in IR spectra.”

  Choubey 等 - 2007 - Influence of doping on OH absorption in LiNbO3 cry DOI: 10.1002/crat.200610894
• 797 cm⁻¹ keyakinan 1.0

  “Inthespectralregion1250-400cm-1ofsoilsfromintermediateBh the spectra of horizon Bh and Bhs, with the exception of the peak at cm-1, 1160 andBhshorizons(Fig.1),wherethemineralphasesKOandTOappear, which disappears due to the very low content”

  Clabel 等 - 2020 - Organo-mineral associations in a Spodosol from nor DOI: 10.1016/j.geodrs.2020.e00303
• 1100 cm⁻¹ keyakinan 1.0

  “at the highest CO partial pressure, P(CO 2)=760Torr, on the four 2 investigatedsamples.Likewise,Fig.4Bsummarizestheadsorption isothermsbuiltupbyplottingthetotalintegratedabsorbance(normalized by weight and surface area) data for the spectra”

  Effect of gallia doping on the acid⠍base and redox properties of ceria DOI: 10.1016/j.apcata.2010.08.050
• 3708 cm⁻¹ keyakinan 1.0

  “cm-1 N3700 the absorption of which extends at frequency and thus overlapswiththe3708cm-1band.However,acloseinspectionofour spectra revealed that CO 2-rich minerals (for example haüyne and lazurite, Bellatreccia et al., 2009) systematically”

  FTIR microspectroscopy and SIMS study of water-poor cordierite from El Hoyazo, Spain: Application to mineral and melt devolatilization DOI: 10.1016/j.lithos.2009.05.031
• 2200 cm⁻¹ keyakinan 1.0

  “Normalized intensity is the integrated area of ing lost their labile compounds prior to sampling, as was 2200cm-1 the CO2 peak from 2400 to normalized to weight of the the case with the analysed POM having been sampled seven sample.”

  Demyan 等 - 2013 - Combining a coupled FTIR-EGA system and in situ DR DOI: 10.5194/bg-10-2897-2013
• 1387 cm⁻¹ keyakinan 1.0

  “Figure 5 depicts the temperature stability of the adsorbed species, cm-1 sample is heated above 500 K, the peaks at 1387 and 1362 desorption of carbon dioxide, and peak area of the adsorbed have disappeared and two new peaks appear at 1400”

  Durand 等 - 2010 - Reaction of Formic Acid over Amorphous Manganese O DOI: 10.1021/jp104629j