User:Melissa Novy/Notebook/CHEM-572/2013/03/26

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<!-- sibboleth --><div id="lncal1" style="border:0px;"><div style="display:none;" id="id">lncal1</div><div style="display:none;" id="dtext">04/02/2013</div><div style="display:none;" id="page">User:Melissa Novy/Notebook/CHEM-572/2013/03/26</div><div style="display:none;" id="fmt">yyyy/MM/dd</div><div style="display:none;" id="css">OWWNB</div><div style="display:none;" id="month"></div><div style="display:none;" id="year"></div><div style="display:none;" id="readonly">Y</div></div>

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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