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Development of an exhaled breath analyzer for early detection of diseases

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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


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