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DNA was attached on the surface of an ethylenedidamine/polyglutamic(En/PGA) modified glassy carbon electrode (GCE) to create a novel voltammetric sensor (DNA/En/PGA/GCE) for dopamine (DA). This modified electrode exhibited a linear voltammetric response for DA in the range from 1.0×10−7 mol L−1 to 1×10−5 mol L−1, with a detection limit of 2×10−8 mol L−1. The detection of DA was found to be unaffected...
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