Table 1.

Membrane composition of all CRT selective-membranes, prepared by including ionophore and lipophilic additive in PVC membranes plasticized with oNPOE.

No.	“Active” Components		Membrane composition (mg)
	Ionophore	Additive	Ionophore	Plasticizer	Additive	PVC
I	SPAM	—	0.13	5.60	—	2.21
II	NIM	—	0.15	18.19	—	2.27
III	SPAM	TpClPB	0.12	6.39	0.52	2.39
IV	—	TpClPB	—	9.46	0.53	2.36
V	SPAM	pTOAB	0.15	7.13	0.49	2.34
VI	—	pTOAB	—	9.28	0.50	2.36
VII	NIM	pTOAB	0.15	2.20	0.08	3.50