Results cheme

Results cheme - Michelle Dee Brian Casebolt Thomas Ting...

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Brian Casebolt Thomas Ting Daniel Livsey Results Absorbance: Solution Absorbance Line Color HAuCl4 1.55 Black Gold nanoparticles 1.856 (at 300nm) Red Gold and dextrose 1.8117 Hot pink Gold and NaCl 1.538 Light Blue Wav elength (nm 200 300 400 500 600 700 800 900 Absorbance (AU) -1 -0.5 0 0.5 1 1.5 2 2.5 # Name Abs<300nm> 1 bulk gold 1.5499 black 2 gold nanoparticles 1.8564 red 3 salt inadequate 1.833 blue 4 salt 1.538 light blue 5 dextrose 1.8117 pink Observations: On absorbance: Gold nanoparticles absorbance: absorbance measured at 300nm, but there was another peak at 520nm Gold and sugar: no color change, the hot pink line follows the red line almost exactly, so no change in absorbance. This solution also exhibits the same behavior with laser tests. Gold and salt: The red solution changes to purple when mixed with dextrose. The laser beam in the solution was thick one way, but when rotated 90 degrees, the line was thinner and brighter, still visible. 3.2
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Results cheme - Michelle Dee Brian Casebolt Thomas Ting...

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