Table 2.

Model used to fit release data.

Mathematical Model	Equation
Zeroth order	F = kt
First order	Ln (1 − F) = −kt
Higuchi	F = kt1/2
Baker–Lonsdale	3/2[1 − (1 − F)2/3] − F = kt
Hixon–Crowell	1 − (1 − F)1/3 = kt
Square root of mass	1 − (1 − F)1/2 = kt
Three seconds root of mass	1 − (1 − F)2/3 = kt