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A humid atmospheric pressure plasma jet was used to treat an aqueous liquid.
The transport of hydrogen peroxide and hydroxyl from the plasma to the liquid was
analyzed. Two in-situ liquid diagnostics for each species were compared and validated.
In case of H2O2, a spectrophotometric approach using ammonium metavanadate and
an electrochemical sensing based on Prussian blue carbon paste electrodes were applied.
Both methods show very good agreement in trends and absolute values. The detection
of OH was performed by terephthalic acid dosimetry and its distribution was visualized
by the chemiluminescence of luminol. There, the measurement using TA resembles
the luminol measurements and vice versa, and a very good agreement between both
methods was found.
| Field | Value |
|---|---|
| Publisher | |
| Authors | |
| Release Date | 2023-07-18 |
| Identifier | 5662d78a-5c50-46d3-a098-83416f334202 |
| Permanent Identifier (URI) | |
| Is supplementing | |
| Plasma Source Name | |
| Plasma Source Specification | |
| Plasma Medium Name | |
| Plasma Medium Properties | addition of water vapor (up to 7000 ppm) |
| Plasma Medium Procedure | 5 minutes of liquid treatment |
| Plasma Target Name | |
| Plasma Target Properties | 3 mL liquid volume in UV cuvette |
| Plasma Diagnostic Name | |
| Plasma Diagnostic Properties | Spectrophotometry using ammonium metavanadate, fluorometry using terephthalic acid, chemiluminescence using luminol, electrochemical sensing using Prussian blue carbon paste electrode
|
| Language | English (United Kingdom) |
| License | |
| Contact Name | Steffen Schüttler |
| Contact Email | |
| Public Access Level | Public |
| Funding Agency | |
| Project | |
| Subproject |