کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
192960 459756 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved electrochemical nucleic acid biosensor based on polyaniline-polyvinyl sulphonate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Improved electrochemical nucleic acid biosensor based on polyaniline-polyvinyl sulphonate
چکیده انگلیسی

DNA biosensor based on polyaniline (PANI)-polyvinyl sulphonate (PVS) has been fabricated using electrochemical entrapment technique for detection of organophosphorus pesticides (chlorpyrifos and malathion). These double stranded calf thymus DNA (dsCT-DNA) entrapped PANI-PVS/indium-tin-oxide (ITO) bioelectrodes have been characterized using square wave voltammetry (SWV), Fourier transform infra-red spectroscopy (FT-IR), scanning electron microscopy (SEM) and electrochemical impedance techniques, respectively. These dsCT-DNA entrapped PANI-PVS/ITO bioelectrodes have been found to have response time of 30 s, stability of about 6 months and detection limit for chlorpyrifos and malathion as 0.5 ppb and 0.01 ppm, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 12, 1 May 2008, Pages 4344–4350
نویسندگان
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