Table 6.

Titration data and statistics for (a) Hyamine 1622, (b) CPC, (c) CTAB and (d) DMIC titration with SDS (c = 4 mM) using DMI-TPB sensors prepared with six different plasticisers (P1–P6). ΔE, mV is the difference between the end and the start potential; dE/dV is the value of first derivative in the end-point. The statistics were based on five independent measurements.

		DMI-TPB Sensor Plasticizer Type
		P1	P2	P3	P4	P5	P6
Hyamine 1622 with SDS	ΔE, mV	290.1	263.4	278.2	248.6	252.4	-/-
	dE/dV	61.5	59.1	43:5	43.1	55.3	-/-
	SDS consumption in EP, mL	4.83	4.83	4.79	5.07	4.79	-/-
	SD of EP	0.013	0.023	0.018	0.054	0.018	-/-
CPC with SDS	ΔE, mV	321.7	314.9	304.0	263.8	313.3	39.4
	dE/dV	69.4	67.7	46.4	45.0	62.2	9.6
	SDS consumption in EP, mL	4.78	4.76	4.69	4.79	4.72	4.86
	SD	0.016	0.018	0.016	0.059	0.019	0.035
CTAB with SDS	ΔE, mV	325.7	294.7	276.2	260.2	286.1	11.6
	dE/dV	71.5	67.9	54.8	56.9	65.2	13.9
	SDS consumption in EP, mL	4.97	4.92	4.92	4.91	4.94	4.96
	SD	0.024	0.015	0.037	0.035	0.038	0.027
DMIC with SDS	ΔE, mV	357.6	325.2	300.3	292.5	303.2	54.6
	dE/dV	66.6	61.4	52.4	46.2	59.1	33.8
	SDS consumption in EP, mL	4.73	4.70	4.69	4.75	4.71	4.96
	SD	0.027	0.015	0.014	0.026	0.015	0.025