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A simple and green method for the determination of cyanide ions (CN−) has been developed which is based on copper nanoparticles (CuNPs) acting as a fluorescent probe in aqueous solutions. In this study, fluorescent CuNPs have been synthesized in the presence of ascorbic acid which acts both as a reducing and protecting agent. The preparation of CuNPs by this method is very simple, low cost, high yield,...
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