MEASUREMENT OF MERCURY WITH SILVER NANOPARTICLES USING AN ULTRA-VIOLET VISIBLE SPECTROPHOTOMETER
Abstract
Mercury (Hg) is a metal pollutant so many analysis methods have been developed. In this study mercury was measured in an aqueous medium based on silver nanoparticles. Measurement of mercury (Hg) based on silver nanoparticles coated with p-hydroxybenzoate was carried out using the colorometric method with a volume ratio of 1:4. The results showed that increasing mercury concentration caused the color intensity of colloidal silver nanoparticles to decrease. The decrease in color intensity was confirmed with a UV-Vis spectrophotometer which showed a decrease in the surface plasmon resonance absorption intensity of the silver colloidal nanoparticles as the mercury concentration increased. Silver nanoparticles coated with p-hydroxybenzoic acid were proven to be sensitive in detecting mercury metal in the range of 400-1200 ppm which was followed by a decrease in color intensity and absorption intensity of colloidal silver nanoparticles
Keywords: p-hidroksibenzoat acid, mercury metal, silver nanoparticles
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