Preparation, Characterization, and Analytical Application of Ramipril Membrane-Based Ion-Selective Electrode

Table 1

Response characteristics of ramipril membrane-based selective electrodes.

Parameter	Ramipril	Ramipril
	phosphomolibdate	tetraphenylborate
Slope, mV/decade	53 ± 0.5	54 ± 0.5
Linear range, mol L^−1	1 $\times$ 10^−2–1 $\times$ 10^−5	1 $\times$ 10^−2–1 $\times$ 10^−5
Lower limit of detection,	4.0 $\times$ 10^−6	3.0 $\times$ 10^−6
mol L^−1
Response time, (s)	<20	<15
Life time, (d)	60	50
Working pH range	1–3.8	1–4