Microwave Irradiation of Nanohydroxyapatite from Chicken Eggshells and Duck Eggshells

Table 2

FTIR spectra of cHA-900, dHA-900, and dHA-700.

Corresponding assignments	Observed vibrational frequencies (cm^−1)
	cHA-900	dHA-900	dHA-700
bend V2	475	475	475
bend V4	560	561	560
bend V4	601	601	601
Structural	631	629	631
	877	879	877
stretch V1	962	962	962
bend V3	1023	1024	1023
bend V3	1090	1090	1088
V3	1453	1454	1417
H2O adsorbed V2	1645	1647	1648
H2O adsorbed	3214	3220	3227
Structural	3542	3567	3570