Table 1. Major organic functional groups present in samples and standards.
Energy (e) | Transition | Functional group | Cell | Particles | Stalk | Loihi stalk | |
---|---|---|---|---|---|---|---|
a | 285.2 | 1s → π*C=C | Unsaturated or aromatic C | x | x | x | |
285.4 | 1s → π*C=C | Unsaturated or aromatic C | x | ||||
b | 287.3 | 1s → σ | Aliphatic C, aromatic carbonyl, aromatic hydroxyl, other oxygenated groups | x | x | x | x |
c | 288.2 | 1s → π*C=O | Amide (peptide bond) | x | |||
288.4–288.5 | 1s → π*C=O | Carboxyl, ester | x | x | x | ||
d | 288.6 | 1s → π*C=O | Carboxyl (polysaccharide) | ||||
e | 289.3 | 1s → σ* | Alcohol, aliphatic ether | x | |||
290.2 | 1s → π*C=O | Carbonate |