Difference between revisions of "User:Melissa Novy/Notebook/CHEM-572/2013/03/26"

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(Objectives)
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* Continue silver ISE studies for the determination of Ag<sup>+</sup> in solution.
 
* Continue silver ISE studies for the determination of Ag<sup>+</sup> in solution.
 
* Filter more 100Ag-LMT, made on ??? for future use.
 
* Filter more 100Ag-LMT, made on ??? for future use.
 +
 +
 +
==Calibration Curve of [Ag<sup>+</sup>] for Silver ISE==
 +
* The calibration curve for [Ag<sup>+</sup>] was redone in polypropylene containers to account for the adsorption of Ag<sup>+</sup> on glassware.  AgNO<sub>3</sub> solutions made on [[User:Melissa_Novy/Notebook/CHEM-572/2013/03/19|2013/03/19]] were used and at concentrations according to the table below.  Note that the solution of concentration 1 μM AgNO<sub>3</sub> was discarded from the calibration curve, because the detection limit of the silver ISE is around 10 μM Ag<sup>+</sup>.
 +
<br>
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{| {{table}}
 +
| align="center" style="background:#f0f0f0;"|'''Initial [Ag<sup>+</sup>] [M]'''
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| align="center" style="background:#f0f0f0;"|'''Final [Ag<sup>+</sup>] [M]'''
 +
| align="center" style="background:#f0f0f0;"|'''log [Ag<sup>+</sup>] []'''
 +
| align="center" style="background:#f0f0f0;"|'''Conductivity [mV]'''
 +
| align="center" style="background:#f0f0f0;"|''''''
 +
| align="center" style="background:#f0f0f0;"|''''''
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| align="center" style="background:#f0f0f0;"|'''Average Conductivity [mV]'''
 +
| align="center" style="background:#f0f0f0;"|'''Standard Deviation [mV]'''
 +
| align="center" style="background:#f0f0f0;"|'''Corrected Conductivity [mV]'''
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|-
 +
| ||||||Trial 1||Trial 2||Trial 3||||||
 +
|-
 +
| 0||0||---||341.9||340.2||335.6||339.2333333||3.259345538||0
 +
|-
 +
| 0.000001||9.80392E-07||-6.008600172||328.3||329.6||331||329.6333333||1.350308607||-9.6
 +
|-
 +
| 0.00001||9.80392E-06||-5.008600172||328.5||330.6||329.4||329.5||1.053565375||-9.733333333
 +
|-
 +
| 0.0001||9.80392E-05||-4.008600172||357.2||359.2||359.5||358.6333333||1.250333289||19.4
 +
|-
 +
| 0.001||0.000980392||-3.008600172||417.6||417.1||416.6||417.1||0.5||77.86666667
 +
|-
 +
| 0.01||0.009803922||-2.008600172||472.8||473.3||473.6||473.2333333||0.404145188||134
 +
|-
 +
| 0.1||0.098039216||-1.008600172||527.2||527.5||528||527.5666667||0.404145188||188.3333333
 +
|}
 +
 +
[[Image:Ag%2B_Calibration_Curve_3-26-2013.jpg]]
  
 
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|}
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__NOTOC__
 
__NOTOC__

Revision as of 20:10, 26 March 2013

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Objectives

  • Continue silver ISE studies for the determination of Ag+ in solution.
  • Filter more 100Ag-LMT, made on ??? for future use.


Calibration Curve of [Ag+] for Silver ISE

  • The calibration curve for [Ag+] was redone in polypropylene containers to account for the adsorption of Ag+ on glassware. AgNO3 solutions made on 2013/03/19 were used and at concentrations according to the table below. Note that the solution of concentration 1 μM AgNO3 was discarded from the calibration curve, because the detection limit of the silver ISE is around 10 μM Ag+.


Initial [Ag+] [M] Final [Ag+] [M] log [Ag+] [] Conductivity [mV] ' ' Average Conductivity [mV] Standard Deviation [mV] Corrected Conductivity [mV]
Trial 1 Trial 2 Trial 3
0 0 --- 341.9 340.2 335.6 339.2333333 3.259345538 0
0.000001 9.80392E-07 -6.008600172 328.3 329.6 331 329.6333333 1.350308607 -9.6
0.00001 9.80392E-06 -5.008600172 328.5 330.6 329.4 329.5 1.053565375 -9.733333333
0.0001 9.80392E-05 -4.008600172 357.2 359.2 359.5 358.6333333 1.250333289 19.4
0.001 0.000980392 -3.008600172 417.6 417.1 416.6 417.1 0.5 77.86666667
0.01 0.009803922 -2.008600172 472.8 473.3 473.6 473.2333333 0.404145188 134
0.1 0.098039216 -1.008600172 527.2 527.5 528 527.5666667 0.404145188 188.3333333

Ag+ Calibration Curve 3-26-2013.jpg