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Determination of 1-hydroxypyrene in human urine by a multi-wall carbon nanotubes-modified glassy carbon electrode

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A multi-walled carbon nanotubes (MWNTs) modified glassy carbon electrode (MWNT-GCE) was used to study the electrochemical behaviour of1-hydroxypyrene (1-OHP) and applied to its determination. The results showed that the modified electrode had a strong adsorptive ability to 1-OHP and enhances its electrochemical signal. By square wave voltammetry, the linear relationship of 1-OHP was 6 × 10−9 − 8 × 10−7 mol L−1 with a linear correlation coefficient of 0.996, and the detection limit was 1 × 10−10 mol L−1. Compared with other published methods, this newly proposed method possesses many advantages such as very low detection limit, fast response, low cost and simplicity. And this method was applied successfully in the determination of 1‐OHP in real human urine samples.
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Keywords: 1-hydroxypyrene; cyclic voltammetry; glassy carbon electrodes; multi-walled carbon nanotubes; square wave voltammetry

Document Type: Research Article

Affiliations: Key Lab for Biotechnology of National Commission for Nationalities, College of Life-Science, The South Central University for Nationalities, Wuhan, 430074, China

Publication date: November 1, 2011

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