Table 2 Results of interference study and determination of selectivity coefficients (KAI)
From: Development of membrane electrodes for selective determination of lisinopril in pharmaceuticals
Interferent species | Selectivity coefficient, KAI* | |
|---|---|---|
LNP-PTA ISE | LNP-PMA ISE | |
NaOH | 0.0241 | 0.04 |
NaNO2 | 0.0694 | 0.05776 |
CdSO4 | 0.3978 | 0.4166 |
KNO3 | 0.0421 | 1.45 |
HCl | 0.0348 | 1.11 |
NaCl | 1.21 | 0.035 |
NaHCO3 | 1.34 | 0.05302 |
Oxalic acid | 1.02 | 0.0943 |
Sucrose | 1.12 | 0.4309 |