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Colorimetric Estimation of 3–Mercapto-1, 2-Propanediol by Silver Nanoparticles
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Interaction of 3 -mercapto-1, 2- propanediol (3MPD) (C3H8O2S, 3MPD) with silver nanoparticles prepared by green method has been studied by electronic absorption spectroscopy and transmission electron microscopy. Here we report the changes in properties of AgNP in presence of biologically relevant molecule 3MPD. The assembly and the aggregation of the AgNP are established using UV-Visible spectra and transmission electron microscopy. The biosynthesized AgNP has been used as colorimetric sensor for detection of 3MPD. A new peak generated at 612 nm due to the self aggregation of silver nanoparticles occurred by the interaction of thiol group present in 3 MPD with AgNP. A calibration curve between the absorbance at 612 nm and the concentration of 3 MPD enabled us to estimate 3MPD present in water in presence of SDS.
Keywords
Silver Nanoparticle, 3-Mercapto-1,2-Propanediol, Colorimetric Sensor, Detection of 3MPD, Calibration Curve.
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