Discrimination of Free-Range and Caged Eggs by Chemometrics Analysis of the Elemental Profiles of Eggshell

Table 2

Analysis of wavelengths of 16 mineral elements in free-range and caged eggshells.

Element	Wavelength (nm)	Element	Wavelength (nm)
Zn	213.85	Pb	220.35
Cd	226.50	Co	228.61
Ni	231.60	Fe	238.20
Mn	257.61	Cr	267.71
Mg	280.26	Cu	324.75
Se	361.38	Ca	393.36
Al	396.15	Sr	407.77
Na	589.60	K	766.49