International Journal of Analytical Chemistry

Research Article

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

Table 2

Potentiometric selectivity coefficients (KA,Bpot) for the ramipril phosphomolibdate and ramipril-tetraphenylborate selective electrodes.
Interfering species, BRamipril-phosphomolibdate Ramipril-tetraphenylborate
electrodeelectrode
Ramipril 11
NH4+8.8 × 10−39.1 × 10−3
Co2+8.7 × 10−38.8 × 10−3
Cd2+8.8 × 10−38.7 × 10−3
Ni2+8.8 × 10−38.7 × 10−3
Cr3+4.2 × 10−24.3 × 10−2
Cu2+6.6 × 10−39.0 × 10−3
Ca2+4.6 × 10−34.8 × 10−3
Mg2+9.8 × 10−39.8 × 10−3
Sn2+5.1 × 10−25.3 × 10−2
K+8.8 × 10−38.6 × 10−3
Na+ 8.1 × 10−38.5 × 10−3
Fe3+8.8 × 10−38.8 × 10−3
Glycine7.8 × 10−38.1 × 10−3
Phenyl hydrazine3.2 × 10−23.2 × 10−2
Hydroxylamine2.2 × 10−22.7 × 10−2