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

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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 1Trial 2Trial 3
00---341.9340.2335.6339.23333333.2593455380
0.0000019.80392E-07-6.008600172328.3329.6331329.63333331.350308607-9.6
0.000019.80392E-06-5.008600172328.5330.6329.4329.51.053565375-9.733333333
0.00019.80392E-05-4.008600172357.2359.2359.5358.63333331.25033328919.4
0.0010.000980392-3.008600172417.6417.1416.6417.10.577.86666667
0.010.009803922-2.008600172472.8473.3473.6473.23333330.404145188134
0.10.098039216-1.008600172527.2527.5528527.56666670.404145188188.3333333

Image:Ag+_Calibration_Curve_3-26-2013.jpg



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