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

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==Entry title==
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==Objectives==
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* Insert content here...
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* Crosslink Na-MT films.
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* Adjust the pH of CuSO<sub>4</sub> solutions made on [[User:Melissa_Novy/Notebook/CHEM-581/2012/09/28|2012/09/28]], then take ISE measurements.
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==CuSO<sub>4</sub> Standard and Filtrate Solutions==
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* Please refer to the ISE protocol on [[User:Melissa_Novy/Notebook/CHEM-581/2012/09/28|2012/09/28]] for how ISE measurements were taken.
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** 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.
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** The solutions were allowed to equilibrate with the electrode for 2 min.
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<br>
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CuSO<sub>4</sub> Standard Solutions
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{| {{table}}
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| align="center" style="background:#f0f0f0;"|'''Concentration [ppm]'''
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| align="center" style="background:#f0f0f0;"|'''pH'''
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| align="center" style="background:#f0f0f0;"|'''ISE [mV]'''
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|-
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| 1||9.52||-215.5
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|-
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| 2||9.48||-207.5
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|-
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| 5||9.47||-207.9
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|-
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| 10||9.43||-211.7
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|-
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| 15||9.45||-151.1
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|}
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<br>
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100% CEC (Na-MT)-CuSO<sub>4</sub> Filtrate
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{| {{table}}
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| align="center" style="background:#f0f0f0;"|'''Cu+2 Concentration [ppm]'''
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| align="center" style="background:#f0f0f0;"|'''Time [min]'''
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| align="center" style="background:#f0f0f0;"|'''pH'''
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| align="center" style="background:#f0f0f0;"|'''ISE [mV]'''
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|-
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| 7.4||1||9.53||-201.2
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|-
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| 10||1||8.47||-174.1
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|-
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| 7.4||5||9.52||-200.5
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|-
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| 10||5||8.45||-172.5
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|-
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| 7.4||10||8.51||-172.3
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|-
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| 10||10||9.53||-199
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|}
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<br>
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50% CEC (Na-MT)-CuSO<sub>4</sub> Filtrate
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Revision as of 09:16, 3 October 2012

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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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