Article ID Journal Published Year Pages File Type
182031 Electrochemistry Communications 2008 4 Pages PDF
Abstract

Based on layer-by-layer assembled DNA functionalized single-walled carbon nanotube hybrids, a DNA biosensor for the detection of arsenic(III) in a nearly physiological pH environment was developed. The redox process between arsenic(III) and arsenic(0) on the biosensor was proved. The growth of those hybrids on glassy carbon electrode was monitored by detecting arsenic(III). The arsenic(III) current on the biosensor was similar over a broad pH range (3.0–8.0) and the limit of detection (S/N = 3) was 0.05 μg L−1 at pH 7.0. The biosensor can be reused up to 16 times.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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