Table 1.

Fitted Langmuir parameters obtained by linearization (Scatchard) and nonlinear regression analysis using one-site and two sites Langmuir equations (equations (2), (4)), respectively).

Model	$K_{L,1}$ (L mol−1)	$q_{\mathit{max},1}$ (μmol g−1)	R2	$K_{L,2}$ (L mol−1)	$q_{\mathit{max},2}$ (μmol g−1)	R2
Scatchard	(3.9 ± 0.2) × 105	1.53 ± 0.05	0.94	(8.5±1.2) × 103	19.2 ± 0.1	0.992
Two-site Langmuira	(1.2 ± 0.2) × 106	0.36 ± 0.08	–	(6.7 ± 0.8) × 10	19.2 ± 1.5	0.998
One-site Langmuira	(10.1±1.9) × 103	19 ± 6	0.995	–	–	–

^aObtained by Nonlinear Regression Analysis.