Table 3.

General band assignments for FTIR spectra of the liver of rats under control and groups exposed to sublethal doses of FPN.

Peak	Groups				Assignments of peaks
	Control	Exposed
		High	Medium	Low
1	3406	3428	3413	3303	Amine N—H asymmetric stretching
2	2925	2924	2924	2924	CH3 asymmetric stretching: mainly lipids
3	2854	2855	2857	2854	CH2 asymmetric stretching: mainly lipids
4	1652	1642	1652	1654	Amide I: Protein C O stretching
5	1546	1550	1543	1545	Amide II: Protein N—H bending, C—N stretching
6	1454	1456	1452	1454	C—H bending (scissoring) (in CH3groups)/aromatic —C C stretching vibrations
7	1402	1383	1400	1399	–OH bending vibrations, —C—O—H in-plane bending vibrations,—CH3 out-of-plane bending vibrations, —CH2— wagging and twisting vibrations
8	1238	1268	1315	1315	C(O)—O stretching vibrations and —OH in plane vibrations/amide III (e.g. in aromatic ethers)
9	1149	1162	1241	1239	C—O stretching vibrations (e.g. in C—O—C glycosidic linkages of oligosaccharides or in triacylglycerols)
10	1079	1036	1080	1081	PO2− symmetric stretching: Phospholipids and nucleic acids
11	925	806	870	926	γzOH of carboxylic group