User:Madeleine Y. Bee/Notebook/CHEM-581 Experimental Chemistry/2014/10/08

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October 8, 2014


Diffusion & UV-vis

  1. Our group will use a PVA/Clay film
    • Mass of film: 1.8730 g
    • Width of film: 1.23 mm
  2. BEM group will use a PVA film
  3. Set the film between the two chambers
  4. Add liquid to each chamber
    • One chamber gets water
    • The other chamber gets 20.348 ppm Malachite green
  5. Withdraw 200uL from each chamber at the 5 minute mark and place in their own eppy tube (dilute MG side 10x)
  6. Measure the UV-Vis spectrum for both samples. Return each to the chamber it originally came from
  7. Take measurements at the following times
    • 15 minutes
    • 30 minutes
    • 1 hour
    • 2 hours
    • right before you leave lab (2 hours and 45 min)
    • Thursday 10am & 5pm
    • Friday

Finish Films


UVvis Measurements for Diffusion

2014 1008 abs spectra H20 diffusion.PNG2014 1008 abs spectra MG diffusion.PNG<br.>