FTIR and Raman Characteristic Peak Frequencies in Biological Studies - Vibrational Spectroscopy for Tissue Analysis - page 235

Table 8.1 ( Continued )
Major Characteristic Peak Frequencies Reported in the Literature

Reference
Number Peak Assignment FT-IR Raman

1076 cm −1 C-C (lipid in normal tissues) * 54

Symmetric stretching vibration of
ν 3 PO 4 3− (phosphate of HA)

*

Skeletal cis conformation (CC) of
DNA

* 62

1076 cm −1 Symmetric phosphate [PO 2 −

(sym)] stretching

* 62

1078 cm −1 ν(C-C) or ν(C-O), phospholipids

(lipid assignment)

* 20

Pronounced symmetric
phosphate stretch

* 20

Phospholipids * 20

C-C or C-O stretching mode of
phospholipids

* 20

Carbohydrate peak for solids * 24

* 65

ν s PO 2 −

Phosphate I in RNA * 23

Symmetric phosphate * 38, 52

Glycogen absorption due to C-O
and C-C stretching and C-O-H
deformation motions

* 50

DNA in healthy samples, in the
absence of glycogen indicating
the role of phosphates during
diseases

* 50

53

C-C or C-O stretch (lipid), C-C
or PO 2 stretch (nucleic acid)

* 9

C-OH stretching band of
oligosaccharide residue

* 56

ν(CC) skeletal * 33

ν(CC) vitor s (PO 2 − ) nucleic acid * 33

1079 cm −1 ν s PO 2 − * 38, 52

1080 cm −1 Amide II (?) * 24

Typical phospholipids * 54

νPO 2 − * 38, 76, 77

Phosphate vibration * 55

Phosphate vibrations
(phosphodiester groups in
nucleic acids)

* 55

Symmetric phosphate [PO 2 −
(sym)] stretching

* 64

Collagen * 69

( Continued )