期刊
TALANTA
卷 134, 期 -, 页码 60-64出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2014.10.063
关键词
Taxol; Double-stranded DNA; DNA biosensor; Anticancer drug determination; Pencil-graphite electrode
In this study a novel biosensor for determination of taxol is described. The interaction of taxol with salmon-sperm double-stranded DNA (ds-DNA) based on the decreasing of the oxidation signals of guanine and adenine bases was studied electrochemically with a pencil-graphite electrode (PGE) using a differential pulse voltammetry (DPV) method. The decreases in the intensity of the guanine and adenine oxidation signals after interaction with taxol were used as indicator signals for the sensitive determination of taxol. DPV exhibits a linear dynamic range of 2.0 x 10(-7)-1.0 x 10(-5) M for taxol with a detection limit of 8.0 x 10(-8) M. Finally, this modified electrode was used for determination of taxol in some real samples. (C) 2014 Elsevier B.V. All rights reserved.
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