User:Melissa Novy/Notebook/CHEM-581/2012/10/03

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Objectives

  • Crosslink Na-MT films.
  • Adjust the pH of CuSO4 solutions made on 2012/09/28, then take ISE measurements.

CuSO4 Standard and Filtrate Solutions

  • Please refer to the ISE protocol on 2012/09/28 for how ISE measurements were taken.
    • 3 mL of the solutions were added to 0.1 mL of ionic strength adjuster (4 M solution containing NaOH) to adjust the pH to a value between 8 and 10.
    • The solutions were allowed to equilibrate with the electrode for 2 min.


CuSO4 Standard Solutions

Concentration [ppm] pH ISE [mV]
19.52-215.5
29.48-207.5
59.47-207.9
109.43-211.7
159.45-151.1


100% CEC (Na-MT)-CuSO4 Filtrate

Cu+2 Concentration [ppm] Time [min] pH ISE [mV]
7.419.53-201.2
1018.47-174.1
7.459.52-200.5
1058.45-172.5
7.4108.51-172.3
10109.53-199


50% CEC (Na-MT)-CuSO4 Filtrate




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