Release Behavior of Folic Acid Grafted Hollow Hydroxyapatite as Drug Carrier

Table 1

The fitted results of k₁ and k₂ and correlation coefficients for two models.

	FA-grafted hydroxyapatite				Hydroxyapatite
	Pseudo-first-order		Pseudo-second-order		Pseudo-first-order		Pseudo-second-order
	10^−4 /min^−1	R^2	10^−4/ L⋅mg^−1⋅min^−1	R^2	10^−4/min^−1	R^2	10^−5/ L⋅mg^−1⋅min^−1	R^2
10 mg/L	9.323	0.9768	1.552	0.9676	2.692	0.9380	3.040	0.9267
15 mg/L	8.534	0.7514	0.9560	0.6494	3.896	0.9653	3.006	0.9737
20mg/L	9.254	0.8813	0.8257	0.7898	3.465	0.9929	1.997	0.9917
25mg/L	9.243	0.9517	0.6295	0.9149	3.260	0.9891	1.501	0.9915