کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10567331 | 972641 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Association interaction and voltammetric determination of 1-aminopyrene and 1-hydroxypyrene at cyclodextrin and DNA based electrochemical sensors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The aim of this work was voltammetric determination of 1-aminopyrene and 1-hydroxypyrene using carbon paste electrodes modified with cyclodextrin derivatives and double stranded deoxyribonucleic acid (dsDNA). The detection schemes based on a preconcentration and differential pulse voltammetric (DPV) determination at β-cyclodextrin and γ-cyclodextrin modified carbon paste electrode (β-CD/CPE, γ-CD/CPE), neutral β-cyclodextrin polymer and carboxymethyl-β-cyclodextrin polymer modified screen-printed electrode (β-CDP/SPE, β-CDPA/SPE) and dsDNA modified screen-printed electrode (DNA/SPE) are proposed for the trace determination of studied analytes within the concentration range from 2Ã10â8 to 4Ã10â7 mol dmâ3 and from 2Ã10â7 to 4Ã10â6 mol dmâ3 with the limits of quantification down to 10â8 mol dmâ3. Depending on pH, 1-aminopyrene interacts with both surface attached CD and DNA by electrostatic bonds and supramolecular complexation while 1-hydroxypyrene associates with the CD hosts via complexation. The 1-aminopyrene interaction with dsDNA was confirmed by fluorimetric measurements in the solution phase using a competing DNA-TO-PRO-3 dye complex. In addition, the effect of temperature on this association was investigated using an electrically heated DNA-modified carbon paste electrode (DNA/CPE).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioelectrochemistry - Volume 67, Issue 2, October 2005, Pages 191-197
Journal: Bioelectrochemistry - Volume 67, Issue 2, October 2005, Pages 191-197
نویسندگان
A. Ferancová, M. Bucková, E. Korgová, O. Korbut, P. Gründler, I. Wärnmark, R. Å tepán, J. Barek, J. Zima, J. Labuda,