FTIR-PAS |
FTIR-ATR |
|
|
3900−3700 |
- |
νO─H |
Clay minerals (Churchman et al., 2010; Xing et
al., 2019) |
|
3620 |
νO─H |
Clay minerals (Xu, Du, Ma, Shen, & Zhou,
2020) |
3600−3400 |
3600−3000 |
νO─H, N─H |
Water, alcohols, and phenols;
carboxyl and hydroxyl groups, amides (Ellerbrock & Gerke, 2004;
Pedersen, Simpson, Bockheim, & Kumar, 2011) |
3000−2800 |
- |
νC─H |
Aliphatic methyl and methylene groups
(Ellerbrock & Gerke, 2004; Soriano-Disla, Janik, Viscarra Rossel,
Macdonald, & McLaughlin, 2014) |
2200−2000 |
2200−2000 |
Overtone νCOH |
Carbohydrates (Janik,
Skjemstad, Shepherd, & Spouncer, 2007) |
1720−1600 |
1720−1600 |
νC═O, νC═C |
Carboxylic acids; amides;
Aromatics (Changwen Du, Goyne, Miles, & Zhou, 2014; C. Du, Linker, &
Shaviv, 2007) |
- |
1570–1540 |
νN─H, νC─N in plane |
Amide II (Calderón, Haddix,
Conant, Magrini-Bair, & Paul, 2013) (Leifeld, 2006) |
1515 |
1515 |
νC═C |
Aromatics (Calderón et al., 2013) |
- |
1500−1300 |
νCO32−
|
Carbonates
(Viscarra Rossel & Behrens, 2010) |
1445−1350 |
- |
νC─H |
Methyls (Janik et al., 2007; Rossel & Behrens,
2010) |
- |
1160 |
νC─O |
Polysaccharides, nucleic acids, proteins (Calderón
et al., 2013) |
- |
1050 |
δC─O |
Carbohydrates (Movasaghi, Rehman, & ur Rehman,
2008; Viscarra Rossel & Behrens, 2010) |
1030-950 |
990 |
νSi─O |
Clay minerals (Madejová, 2003) |
- |
915 |
δAl─OH |
Kaolinite and smectite (Viscarra Rossel & Behrens,
2010) |
850 |
- |
NH2 out of plane |
Primary amine (Smidt &
Meissl, 2007) |
- |
770 |
NH2 out of plane |
Primary amine (Nayak &
Singh, 2007) |