User:Michael S. Bible/Notebook/581/2014/09/19
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Film Absorbance of Arsenic and Mercury
Today we set up an experiment similar to the malachite green experiment conducted earlier. Pieces of polymer and polymer+clay will be placed in vials containing solutions of As and Hg with concentrations of 50 ppm, 100 ppm, and 150 ppm. In total, there will be 12 vials of solution+films created
Initial Film Masses
Below is a chart containing the initial masses of each of the polymer and polymer+clay films used in the experiment.
Creating Arsenic and Mercury Solutions
To make 50, 100, and 150 ppm solutions of Mercury and Arsenic, the following calculations were done.
Making 50 mL Hg solutions from Dr. Hartings's 268 ppm Hg stock solution:
Making 50 mL As solutions from 0.0499 M Arsenite solution:
Converting from M to ppm:
(0.0499 mol Arsenite/L Arsenite)*(74.922 g Arsenic/mol of Arsenite)*(1000 mg Arsenic/1 g Arsenic) = 3738.61 mg/L = 3738.61 ppm
Thanks to Eleni for creating the Arsenic solutions.
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