Monitoring ammonia and alkaline gases in breath

The researchers developed a wearable, low-cost, internet-connected sensor, worn inside a disposable face mask to monitor patients’ exhaled breath for ammonia  that can provide information on kidney function. This approach could be used for a wide range of breath sensors.

They validated the technology using a laboratory setup and human subjects who consumed ammonium chloride-containing candy to simulate elevated breath ammonia.

The technology has the potential to monitor a range of volatile compounds, expanding its applications to fields like environmental monitoring, industry safety, and food quality control.

https://academic.oup.com/pnasnexus/article/4/4/pgaf116/8113384

https://sciencemission.com/Wearable-face-mask-attached-disposable-printed-sensor