Optimization of a sodium ion-selective electrode for use in serum measurements |
| |
Authors: | Ulla Fiedler |
| |
Affiliation: | Department of Analytical Chemistry, Chemical Center, University of Lund, S-220 07 Lund 7 Sweden |
| |
Abstract: | A sodium ion-selective polymeric membrane electrode has been optimized, especially with reference to serum measurements. For a given combination of polymer and ligand, the choice of membrane solvent is critical. Potentiometric measurements and electrodialysis experiments have shown that the dielectric constant and solubility parameter of the solvent influence the electrode selectivities, stability, slope and limit of detection. For use in serum measurements, it is essential to use an appropriate analytical technique, such as Flow Injection Analysis, which permits exposures to serum for only short periods of time. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|