Abstract
Accurate monitoring of nitrate level in water systems remains challenging via existing detection methods including spectroscopy, chromatography, and chemiluminescence. We develop graphene ion selective field effect transiters for nitrate detection. Via ion selective membrane and sensing channel optimization, we report the lowest limit of detection (LOD) of 0.38 ppt for nitrate ion detection, while maintaining high selectivity over phosphate, sulfate, chloride, and carbonate interfering anion groups.
| Original language | English (US) |
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| Title of host publication | MicroTAS 2022 - 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences |
| Publisher | Chemical and Biological Microsystems Society |
| Pages | 1075-1076 |
| Number of pages | 2 |
| ISBN (Electronic) | 9781733419048 |
| State | Published - 2022 |
| Event | 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2022 - Hybrid, Hangzhou, China Duration: Oct 23 2022 → Oct 27 2022 |
Publication series
| Name | MicroTAS 2022 - 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences |
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Conference
| Conference | 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2022 |
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| Country/Territory | China |
| City | Hybrid, Hangzhou |
| Period | 10/23/22 → 10/27/22 |
Bibliographical note
Publisher Copyright:© 2022 MicroTAS 2022 - 26th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.
Keywords
- Graphene
- Ion sensitive field effect transistors
- Nitrate detection
- Ultralow limit of detection