Table 3.

Parameters for polystyrene optodes using Equations (5) and (6) (two-site and Lehrer models).

Indicator	Two-Site Model					Lehrer’s Model
	${\mathit{f}}_{\mathbf{1}}$	${\mathit{f}}_{\mathbf{2}}$	${\mathit{K}}_{\mathit{S}{\mathit{V}}_{\mathbf{1}}}$	${\mathit{K}}_{\mathit{S}{\mathit{V}}_{\mathbf{2}}}$	<${\mathit{\tau }}_{\mathbf{0}}$>/<$\mathit{\tau }$>	f	${\mathit{K}}_{\mathit{S}\mathit{V}}$	${\mathit{\tau }}_{\mathbf{0}}$/$\mathit{\tau }$
IrTFPP-CO-Cl	0.9470	0.0530	0.325	0.0189	6.3	0.9734	0.339	6.8
PdTFPP	0.9932	0.0068	1.994	0.0218	35.9	0.9964	2.545	45.6