dc.contributor.author |
Panawala, PSS |
|
dc.contributor.author |
Tissera, PLU |
|
dc.contributor.author |
Amarasinghe, DAS |
|
dc.contributor.editor |
Sivahar, V |
|
dc.date.accessioned |
2023-08-04T02:21:10Z |
|
dc.date.available |
2023-08-04T02:21:10Z |
|
dc.date.issued |
2023-07-28 |
|
dc.identifier.citation |
************ |
en_US |
dc.identifier.uri |
http://dl.lib.uom.lk/handle/123/21250 |
|
dc.description.abstract |
Chronic Kidney Disease (CKD) represents a significant global health burden, with early detection being crucial for effective management and improved patient outcomes. This research focuses on the development of an Exhaled Breath Analyzer (EBA) as a non-invasive and potentially cost-effective tool for early detection of CKD. Ammonia (NH3) has been identified as a key marker in exhaled breath to diagnose CKD patients as the concentration of ammonia among healthy people is about 0.5-5 ppm and in CKD patients it can be more than 25 ppm. In this work, an ammonia gas sensor based on Polyaniline (PANI) was fabricated using a custom made Interdigitated capacitive sensor (IDC-S). PANI films were successfully deposited on the IDC-S using the solution casting method. The sensor responded to a low ammonia concentration of 50 ppm with a capacitance change of 10% with respect to capacitance in air in room temperature. Furthermore, the response of the sensor increased to 44% as the concentration increased to 300 ppm. This showed a good linear relationship between sensor response and ammonia concentration. Furthermore, the effect of relative humidity on the sensor was also studied and a significant change in capacitance of the sensor was observed with changing relative humidity levels. Moreover, the sensor response to a fixed ammonia concentration of 200 ppm at different humidity levels was studied and it diminished from 26% to 4% as the humidity level increased from 20% to 90%. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Department of Materials Science and Engineering, University of Moratuwa. |
en_US |
dc.subject |
Exhaled breath analysis |
en_US |
dc.subject |
IDC-S |
en_US |
dc.subject |
NH3 |
en_US |
dc.subject |
Polyaniline (PANI) |
en_US |
dc.subject |
Gas sensor |
en_US |
dc.title |
Development of an exhaled breath analyzer for early detection of diseases |
en_US |
dc.type |
Conference-Abstract |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.department |
Department of Materials Science and Engineering, University of Moratuwa. |
en_US |
dc.identifier.year |
2023 |
en_US |
dc.identifier.conference |
Materials Engineering Symposium on Innovations for Industry 2023 |
en_US |
dc.identifier.place |
Moratuwa, Sri Lanka |
en_US |
dc.identifier.pgnos |
p. 4 |
en_US |
dc.identifier.proceeding |
Proceedings of Materials Engineering Symposium for Innovations in Industry |
en_US |
dc.identifier.email |
amarasinghes@uom.lk |
en_US |