Research Article

Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium

Figure 5

UV-vis spectra of PVP stabilized AuNPs (pH = 12) before and after each addition corresponding to 10 μM Hg2+ ion; Inset. Calibration plot of intensity of absorption value versus Hg2+ ion concentrations for each addition of 10 μM.
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