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Registration of heavy metal ions and pesticides with ATR planar waveguide enzyme sensors

Nabok, Alexei and Haron, Saharudin and Asim Ray, Asim Ray (2004) Registration of heavy metal ions and pesticides with ATR planar waveguide enzyme sensors. Applied Surface Science, 238 (Issue ). pp. 423-428.

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Official URL: http://dx.doi.org/doi:10.1016/j.apsusc.2004.05.165

Abstract

The proposed novel type of enzyme optical sensors is based on a combination of SiO2/Si3N4/SiO2 planar waveguide ATR (attenuated total reflection) transducer, fabricated by standard silicon planar technology, with the composite polyelectrolyte self-assembled coating containing both organic chromophores and enzyme molecules. Such devices were deployed to monitor typical industrial and agricultural water pollutants, such as heavy metal ions and pesticides, acting as inhibitors of enzyme reactions. The sensitivity of registration of these pollutants in the range of 1 ppb was achieved. The use of different enzymes in the sensitive membrane provides a background for pattern recognition of the above pollutants.

Item Type:Article
Uncontrolled Keywords:attenuated total reflection, planar waveguide, enzyme reactions, inhibition of enzyme activity, heavy metal ions, pesticides
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:9815
Deposited By: Ms Zalinda Shuratman
Deposited On:25 Mar 2010 09:49
Last Modified:02 Jun 2010 02:03

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