Na+-selective glass electrode
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Introduction
Na+-selective glass electrodes can be manufactured from glass which consists of silicon dioxide, sodium oxide & aluminum oxide in the molar ratio of 71:11:18. Lithium aluminum silicates have also been found suitable. The electrodes are insensitive to pH in the range of pH = 6-10. Electrodes with a flat surface have been used for the direct measurement of Na+ activity on the skin surface for the diagnosis of cystic fibrosis. Capillary electrodes have been constructed for measurements of Na+ in serum.
More general terms
References
- ↑ Tietz Textbook of Clinical Chemistry, 2nd ed. Burtis CA & Ashwood ER (eds), WB Saunders Co, Philadelphia PA, 1993, pg 168