Optical biodetection of cadmium and lead ions in water
A three layer waveguiding silicon dioxide (SiO2)/silicon nitride (Si3N4)/SiO2 structure on silicon substrate was proposed as an optically efficient biosensor for calibration of heavy metal ions in drinking water. The catalytic activities of urease and acetylcholine esterase (AchE) were inhibited by...
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2006
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my.utm.90452009-07-27T03:29:54Z http://eprints.utm.my/id/eprint/9045/ Optical biodetection of cadmium and lead ions in water Haron, Saharudin Ray, Asim K. A three layer waveguiding silicon dioxide (SiO2)/silicon nitride (Si3N4)/SiO2 structure on silicon substrate was proposed as an optically efficient biosensor for calibration of heavy metal ions in drinking water. The catalytic activities of urease and acetylcholine esterase (AchE) were inhibited by the presence of cadmium (Cd2+) and lead (Pb2+) ions. The detection limit as low as 1 ppb was achieved by employing the technique of total reflection at the interface between the Si3N4 core and composite polyelectrolyte self-assembled (PESA) membranes containing cyclotetrachromotropylene (CTCT) as an indicator. Elsevier BV 2006 Article PeerReviewed Haron, Saharudin and Ray, Asim K. (2006) Optical biodetection of cadmium and lead ions in water. Medical Engineering and Physics, 28 (10). pp. 978-981. ISSN 1350-4533 http://dx.doi.org/10.1016/j.medengphy.2006.04.004 10.1016/j.medengphy.2006.04.004 |
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A three layer waveguiding silicon dioxide (SiO2)/silicon nitride (Si3N4)/SiO2 structure on silicon substrate was proposed as an optically efficient biosensor for calibration of heavy metal ions in drinking water. The catalytic activities of urease and acetylcholine esterase (AchE) were inhibited by the presence of cadmium (Cd2+) and lead (Pb2+) ions. The detection limit as low as 1 ppb was achieved by employing the technique of total reflection at the interface between the Si3N4 core and composite polyelectrolyte self-assembled (PESA) membranes containing cyclotetrachromotropylene (CTCT) as an indicator. |
| format |
Article |
| author |
Haron, Saharudin Ray, Asim K. |
| spellingShingle |
Haron, Saharudin Ray, Asim K. Optical biodetection of cadmium and lead ions in water |
| author_facet |
Haron, Saharudin Ray, Asim K. |
| author_sort |
Haron, Saharudin |
| title |
Optical biodetection of cadmium and lead ions in water |
| title_short |
Optical biodetection of cadmium and lead ions in water |
| title_full |
Optical biodetection of cadmium and lead ions in water |
| title_fullStr |
Optical biodetection of cadmium and lead ions in water |
| title_full_unstemmed |
Optical biodetection of cadmium and lead ions in water |
| title_sort |
optical biodetection of cadmium and lead ions in water |
| publisher |
Elsevier BV |
| publishDate |
2006 |
| url |
http://eprints.utm.my/id/eprint/9045/ http://dx.doi.org/10.1016/j.medengphy.2006.04.004 |
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1643645104716513280 |
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13.18916 |