Abstract
A gas porous electrode structure that detects volatile electroactive species in a flowing liquid stream is described and evaluated for its utility in flow injection analysis. The electrode is fabricated by depositing a porous gold layer on one side of a porous Teflon membrane. The gold serves as the amperometric electrode which consumes dissolved, volatile species that is transported from the flowing solution through the membrane to the metallzed face where it is electrolyzed. Nitrite ion Is determined by reaction In the carrier stream to produce nitric oxide and iodine, and both are electroxidized at the gold electrode. The detection limit is 30 pg of nitrite ion. Dissolved, nonvolatile electroactive species do not Interfere.
| Original language | English |
|---|---|
| Pages (from-to) | 866-869 |
| Number of pages | 4 |
| Journal | Analytical Chemistry |
| Volume | 58 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1986 |
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