GOLD SOL TEST Meaning and
Definition
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Gold sol test refers to a chemical test used in various scientific fields, particularly in chemistry and materials science, to verify the presence and determine the concentration of gold nanoparticles in solution. The test relies on the unique optical properties of gold nanoparticles, specifically their ability to produce a distinctive red color when dispersed in a liquid medium.
To perform a gold sol test, a sample solution suspected of containing gold nanoparticles is mixed with a solution containing a reducing agent, such as sodium citrate or sodium borohydride. This reducing agent reduces gold ions present in the solution to form gold nanoparticles, which then become dispersed in the liquid medium. If gold nanoparticles are indeed present, the solution will exhibit a noticeable change in color, shifting from colorless or pale yellow to a distinct red hue. The intensity of the red color is directly proportional to the concentration of gold nanoparticles in the solution. This color change occurs due to the interaction of light with the nanoparticles, resulting in the phenomenon of surface plasmon resonance.
The gold sol test is frequently employed in nanotechnology research, as well as in medical diagnostics, environmental monitoring, and quality control of gold-containing products. Its simplicity, reliability, and sensitivity make it a valuable tool for detecting and quantifying gold nanoparticles in solution, aiding in the advancement of various scientific investigations and applications.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GOLD SOL TEST
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