A New Method for Heavy Metals and Aluminium Detection using Biopolymer-based Optical Biosensor

Ling, Shing Wong and Chee, Sien Wong (2015) A New Method for Heavy Metals and Aluminium Detection using Biopolymer-based Optical Biosensor. IEEE Sensors Journal, 15 (1). pp. 471-475. ISSN 1530-437X

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Abstract

A biopolymer-based biosensor for heavy metals and aluminium (Al) detection was constructed with naturally occurring β-carotene in palm kernel oil used as the biological reporter. The biosensor was designed with β-carotene entrapped by polyurethane- a polymer formed through prepolymerization of palm kernel oil. The presence of copper (Cu), lead (Pb), zinc (Zn), and Al was detected through the emulsification of β- carotene, which caused the change of optical density (OD) at λ = 450 nm. The results showed the OD increased with the presence of heavy metals and Al within 0.1 mg/L – 10.0 mg/L. The biosensor was constructed without extra steps to immobilize the biological component and it was simple to use with one step detection. Together with high reproducibility and fast response to Cu within 15 minutes, the biosensor showed good potential to be developed as a method to detect the presence of heavy metals and Al.

Item Type: Article
Uncontrolled Keywords: Chemical and biological sensor, β-carotene, heavy metals, spectrophotometry
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering and Quantity Surveying
Depositing User: Unnamed user with email masilah.mansor@newinti.edu.my
Date Deposited: 11 Jan 2016 01:11
Last Modified: 14 Sep 2016 03:39
URI: http://eprints.intimal.edu.my/id/eprint/11

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