Sensing properties of chitosan and chitosan-roselle film sensors on toluene concentrations detection
dc.contributor.author | Halimatussa'adiah, Adnan | |
dc.date.accessioned | 2016-04-13T07:01:52Z | |
dc.date.available | 2016-04-13T07:01:52Z | |
dc.date.issued | 2013-10 | |
dc.identifier.uri | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41303 | |
dc.description.abstract | This study aims to observe the sensing properties of chitosan sensor (CS) and chitosanroselle sensors (CRSs) on toluene at various concentrations. CRSs were deposited using various chitosan: roselle ratio of 99:1 to 89:11 to find the optimum ratio which exhibit the best electrical properties. Toluene is a suitable chemical marker for lung cancer diagnosis where 30 ppb toluene in exhaled breath is regarded to be a distinctive early symptom of lung cancer. Therefore, the preliminary study on the electrical laboratory testing of the CS and CRSs film properties to toluene vapor-contaminated air in the range of 15–90 ppb was carried out at room temperature (25–30oC). The results suggested that the proposed CS and CRS can operate at room temperature with a high performance demonstrated by good response, recovery, sensitivity, repeatability, stability and selectivity. All CRS exhibited better output voltage compared to CS where the optimum ratio observed was chitosan:roselle (93:7). This is a good preliminary step for a trouble free, painless and steadfast technique which aid in diagnosing lung cancer, enabling early detection. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Universiti Malaysia Perlis (UniMAP) | en_US |
dc.subject | Chitosan sensor (CS) | en_US |
dc.subject | Chitosanroselle sensors (CRSs) | en_US |
dc.subject | Thin film sensor | en_US |
dc.subject | Thin film | en_US |
dc.subject | Sensors | en_US |
dc.subject | Chitosan | en_US |
dc.title | Sensing properties of chitosan and chitosan-roselle film sensors on toluene concentrations detection | en_US |
dc.type | Thesis | en_US |
dc.contributor.advisor | Dr. Irwana Nainggolan | en_US |
dc.publisher.department | School of Materials Engineering | en_US |