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In this work, we reported a new, simple and sensitive method for determination of N-acetylcysteine (NAC) based on quenching of the red fluorescence of oligonuleotide-protected silver nanoculsters (Ag NCs) with the quantum yield of 68.3±0.3%. This method was successfully used for the assay of NAC granules presenting a linear range from 100nM to 1200nM (LOD of 50nM) with minimal interferences from potential...
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