User:Melissa Novy/Notebook/CHEM581/2012/10/03
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* Adjust the pH of CuSO<sub>4</sub> solutions made on [[User:Melissa_Novy/Notebook/CHEM581/2012/09/282012/09/28]], then take ISE measurements.  * Adjust the pH of CuSO<sub>4</sub> solutions made on [[User:Melissa_Novy/Notebook/CHEM581/2012/09/282012/09/28]], then take ISE measurements.  
  ==CuSO<sub>4</sub> Standard and Filtrate Solutions==  +  ==CuSO<sub>4</sub> Standard, Na<sup>+</sup> Standard, and NaMT Filtrate Solutions== 
* Please refer to the ISE protocol on [[User:Melissa_Novy/Notebook/CHEM581/2012/09/282012/09/28]] for how ISE measurements were taken.  * Please refer to the ISE protocol on [[User:Melissa_Novy/Notebook/CHEM581/2012/09/282012/09/28]] 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.  ** 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.  ** The solutions were allowed to equilibrate with the electrode for 2 min.  
+  * Dilutions of 5 mL each of 1, 5, 10, 15, and 20 ppm Na<sup>+</sup> in pure H<sub>2</sub>O were made from a 1000 ppm Na<sup>+</sup> solution, then ISE measurements were taken.  
+  * Calculations  
+  '''5 mL 20 ppm Na<sup>+</sup> requires:'''  
+  '''(1000 ppm Na<sup>+</sup>)V<sub>1</sub>=(20 ppm Na<sup>+</sup>)(5 mL)'''  
+  '''V<sub>1</sub>=100 μL'''  
+  <br>  
+  '''5 mL 10 ppm Na<sup>+</sup> requires:'''  
+  '''(1000 ppm Na<sup>+</sup>)V<sub>1</sub>=(10 ppm Na<sup>+</sup>)(5 mL)'''  
+  '''V<sub>1</sub>=50 μL'''  
+  <br>  
+  '''5 mL 5 ppm Na<sup>+</sup> requires:'''  
+  '''(1000 ppm Na<sup>+</sup>)V<sub>1</sub>=(5 ppm Na<sup>+</sup>)(5 mL)'''  
+  '''V<sub>1</sub>=25 μL'''  
+  <br>  
+  '''5 mL 5 ppm Na<sup>+</sup> requires:'''  
+  '''(1000 ppm Na<sup>+</sup>)V<sub>1</sub>=(5 ppm Na<sup>+</sup>)(5 mL)'''  
+  '''V<sub>1</sub>=25 μL'''  
+  <br>  
+  '''5 mL 1 ppm Na<sup>+</sup> requires:'''  
+  '''(1000 ppm Na<sup>+</sup>)V<sub>1</sub>=(1 ppm Na<sup>+</sup>)(5 mL)'''  
+  '''V<sub>1</sub>=5 μL'''  
<br>  <br>  
CuSO<sub>4</sub> Standard Solutions  CuSO<sub>4</sub> Standard Solutions  
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 159.45151.1   159.45151.1  
}  }  
+  <br>  
+  Na<sup>+</sup> Standard Solutions  
<br>  <br>  
100% CEC (NaMT)CuSO<sub>4</sub> Filtrate  100% CEC (NaMT)CuSO<sub>4</sub> Filtrate  
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<br>  <br>  
50% CEC (NaMT)CuSO<sub>4</sub> Filtrate  50% CEC (NaMT)CuSO<sub>4</sub> Filtrate  
  +  <br>  
+  Unmodified (NaMT)CuSO<sub>4</sub> Filtrate  
Revision as of 10:44, 3 October 2012
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Objectives
CuSO_{4} Standard, Na^{+} Standard, and NaMT Filtrate Solutions
5 mL 20 ppm Na^{+} requires: (1000 ppm Na^{+})V_{1}=(20 ppm Na^{+})(5 mL) V_{1}=100 μL
5 mL 10 ppm Na^{+} requires: (1000 ppm Na^{+})V_{1}=(10 ppm Na^{+})(5 mL) V_{1}=50 μL
5 mL 5 ppm Na^{+} requires: (1000 ppm Na^{+})V_{1}=(5 ppm Na^{+})(5 mL) V_{1}=25 μL
5 mL 5 ppm Na^{+} requires: (1000 ppm Na^{+})V_{1}=(5 ppm Na^{+})(5 mL) V_{1}=25 μL
5 mL 1 ppm Na^{+} requires: (1000 ppm Na^{+})V_{1}=(1 ppm Na^{+})(5 mL) V_{1}=5 μL
