Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Selectivity of MIIP in the presence of competing cations (Cobalt Conc. = 1000 mg L−1)
| Interference ion | Tolerable concentration ratio Xa/Co | MIIP | NIIP |
|---|---|---|---|
| R (%) | R (%) | ||
| Without interference | – | 98.0 | 46.0 |
| Na+ | 10 | 94.2 | 41.3 |
| K+ | 10 | 93.6 | 41.6 |
| Ca2+ | 10 | 93.4 | 42.6 |
| Mg2+ | 10 | 92.9 | 42.4 |
| Ni2+ | 10 | 89.6 | 40.6 |
| Zn2+ | 10 | 89.4 | 40.5 |
| Fe2+ | 10 | 90.7 | 39.9 |
| Mn2+ | 10 | 91.2 | 39.3 |
| Cu2+ | 5 | 92.5 | 38.9 |
| Cd2+ | 5 | 92.8 | 39.8 |
| Pb2+ | 5 | 92.8 | 40.2 |
| Hg2+ | 5 | 91.9 | 38.6 |
aConcentrtion of various ions
