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Mintesinot Jiru
Department of Natural Sciences, Soil and Water Quality Analytical Lab, Coppin State University, 2500 W. North Ave, Baltimore, MD, USA
Publications
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Research Article
Lipoic Acid Decorated Gold Nanoparticles and Their Application in the Detection of Lead Ions
Author(s): William Ghann, Tyler Harris, Daiyaan Kabir, Hyeonggon Kang, Mintesinot Jiru, Mohammed M Rahman, Meser M Ali and Jamal Uddin*
A simple colorimetric method has been developed for the detection of lead (Pb2+) in water samples using lipoic acidfunctionalized gold nanoparticles. The lipoic acid-functionalized gold nanoparticles are induced to aggregate in the presence of the Pb2+ which results in a change in the color of the functionalized gold nanoparticles. The change in color and the amount of Pb2+ producing the change could be monitored via UV-visible spectrophotometry. A good correlation coefficient of 0.9927 was obtained for the calibration curve of the colorimetric method. The method was applied in the determination of Pb2+ in water samples and the results compared to that of measurement carried out with Atomic Absorption Spectroscopy. .. View more»