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An electrochemical aptasensor for aflatoxin B1 (AFB1) detection was constructed based on the copper nanoparticles (CuNPs) and gold nanoflowers modified screen‐printed carbon electrodes as electrochemical probes and substrates, respectively. In the range of 100 aM to 100 pM, a good linear relationship between oxidation peak current of CuNPs and concentration of AFB1 was obtained. The high sensitivity...
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