User:Melissa Novy/Notebook/CHEM-581/2012/10/19

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Objectives

  • Redo 1, 5, and 10 min (2:1) NaMT-Fe3O4 exchange with CuSO4 because previous solutions were found to contain particulate that would likely affect the Cu+2 concentration of the solutions.
  • Analyze NaMT-CuSO4 exchange filtrate solutions with AAS.
  • Crosslink porphine films.
    • Make crosslinking fixant solutions.
    • Save the HCl and sodium bicarbonate solutions after crosslinking to analyze with UV-vis for porphine.

AAS of NaMT-CuSO4 Exchange Filtrate Solutions

  • Standards of 0.01, 0.05, 1, 2, 3, and 5 ppm Cu+2 were used to generate a calibration curve.
    • The absorbance of the 5 ppm Cu+2 did not correspond to the rest of the solutions, so that solution was discarded as a standard.

Image:Cu+2_AAS_Calibration_Curve.png

  • The following solutions were analyzed at concentrations of 7.4 and 10 ppm Cu+2 each:
    • 1 min NaMT-CuSO4 filtrate
    • 5 min NaMT-CuSO4 filtrate
    • 10 min NaMT-CuSO4 filtrate
    • 1 min 100%CEC NaMT-CuSO4 filtrate
    • 5 min 100%CEC NaMT-CuSO4 filtrate
    • 10 min 100%CEC NaMT-CuSO4 filtrate
    • 1 min 50%CEC NaMT-CuSO4 filtrate
    • 5 min 50%CEC NaMT-CuSO4 filtrate
    • 10 min 50%CEC NaMT-CuSO4 filtrate


  • The concentrations of the samples are as follows:
Sample Name [ ] Given Conc. [ppm] Abs. [ ] BG [ ] Reported Conc. [ppm]
1 min NaMT-CuSO47.40.37690.00435.6399
1 min NaMT-CuSO4100.4760.00627.0191
5 min NaMT-CuSO47.40.38080.00355.6942
5 min NaMT-CuSO4100.48150.0067.0956
10 min NaMT-CuSO47.40.29540.00374.5058
10 min NaMT-CuSO4100.37640.00485.633
1 min 100%CEC NaMT-CuSO47.40.48030.00687.0789
1 min 100%CEC NaMT-CuSO4100.61880.00959.0063
5 min 100%CEC NaMT-CuSO47.40.46120.00646.8131
5 min 100%CEC NaMT-CuSO4100.62080.00799.0342
10 min 100%CEC NaMT-CuSO47.40.4330.0046.4207
10 min 100%CEC NaMT-CuSO4100.62960.00489.1566
1 min 50%CEC NaMT-CuSO47.40.47470.00537.001
1 min 50%CEC NaMT-CuSO4100.62050.00499.03
5 min 50%CEC NaMT-CuSO47.40.46110.00316.8117
5 min 50%CEC NaMT-CuSO4100.60940.00588.8755
10 min 50%CEC NaMT-CuSO47.40.4680.00396.9077
10 min 50%CEC NaMT-CuSO4100.59620.00448.6918



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