Biomedical Engineering Reference
In-Depth Information
Table 8.1 (
Continued
)
Major Characteristic
Peak Frequencies Reported in the Literature
Reference
Number
Peak
Assignment
FT-IR
Raman
1423 cm
−1
NH in-plane deformation
*
5
1424 cm
−1
Deoxyribose, (B, Z-marker)
*
21
1430 cm
−1
δ(CH
2
) (polysaccharides,
cellulose)
*
7
1431 cm
−1
CH
2
deformation
*
14
1436 cm
−1
CH
2
scissoring
*
15
1437 cm
−1
CH
2
(lipids in normal tissue)
*
54
CH
2
deformation (lipid)
*
9
Acyl chains
*
2
δ
as
(CH
3
)
*
1
1437-42 cm
−1
CH
2
deformation
*
2
1438 cm
−1
δ(CH
2
) δ
as
(CH
3
) in lipids
*
17
1439 cm
−1
CH
2
bending mode in normal
tissue
*
96
CH
α,α'
in-plane bend
*
6
CH
3
, CH
2
deformation (collagen
assignment)
*
19
CH
2
scissoring
*
19
CH
2
deformation in normal
breast tissue
*
19
CH
2
deformation
*
19
CH
2
*
54
δ(CH
2
) (lipids)
*
43
1440 cm
−1
CH
2
and CH
3
deformation
vibrations
*
25
CH deformation
*
2
Cholesterol, fatty acid band
*
2
δ(CH
2
) (lipids)
*
43
CH
2
bending (lipids)
*
43
Indicates the concentration of
lipids (C-H bend modes
including CH
2
scissors and CH
3
degenerate deformation)
*
58, 92
1441 cm
−1
CH
2
scissoring and CH
3
bending
in lipids
*
87
Cholesterol and its esters
*
49
C-H bending mode of
accumulated lipids in the
necrotic core of the
atheromatous plaque
*
49
1442 cm
−1
Fatty acids
*
24, 25
CH
2
bending mode
*
45
(
Continued
)
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