کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1170525 | 960683 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Polypyrrole-polyvinyl sulphonate film based disposable nucleic acid biosensor Polypyrrole-polyvinyl sulphonate film based disposable nucleic acid biosensor](/preview/png/1170525.png)
Double stranded calf thymus deoxyribonucleic acid entrapped polypyrrole-polyvinyl sulphonate (dsCT-DNA-PPy-PVS) films fabricated onto indium-tin-oxide (ITO) coated glass plates have been used to detect organophosphates such as chlorpyrifos and malathion. These disposable dsCT-DNA-PPy-PVS/ITO bioelectrodes have been characterized using cyclic voltammetry, Fourier-transform-infra-red (FTIR) spectroscopy and atomic force microscopy (AFM), respectively. These biosensing electrodes have a response time of 30 s, are stable for about 5 months when stored in desiccated conditions at 25 °C and can be used to amperometrically detect chlorpyrifos (0.0016–0.025 ppm) and malathion (0.17–5.0), respectively. The additive effect of these pesticides on the amperometric response of the disposable dsCT-DNA-PPy-PVS/ITO bioelectrodes has also been investigated.
Journal: Analytica Chimica Acta - Volume 589, Issue 1, 18 April 2007, Pages 6–13