| 摘要 |
A potentiometric sensor for determining a concentration of magnesium within a sample includes a reference electrode, a pH electrode and a pH-analyte electrode. The pH-analyte electrode includes a magnesium sensing membrane having a porphyrin specific for magnesium and an enzyme that catalyzes insertion of a magnesium ion into the porphyrin. The pH sensing membrane includes an ionophore that senses protons alleviated from porphyrin upon insertion of the magnesium ion. |
