ISE prelab

ISE prelab - Steven Hagedon Yan Zhao Mar-24-08 Danielle...

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Steven Hagedon Danielle Nguyen, Ashley Cox, and Grishma Sheth Yan Zhao Chem 104b Mar-24-08 Ion-Selective Electrodes Problem to Be Solved To determine the Ca 2+ concentration within the sample of water for the Water Project Fundamental Principles E cell = C + (0.0591/z) log a 1 z represents the charge on the ion being analyzed z K+ =+1;z NO3- =-1;z Ca2+ =+2 a 1 represents the activity of the ion The potentiometer is to measure the potential expressed between the external reference electrode and the internal electrode, inside the ISE Procedure 1. Set-up the electrode as per the instructions within class 2. Dilute a given stock sample with a 1:10 dilution, then create three more dilutions, each a 1:10 dilution, using the serial dilution method, ensuring a good calibration of the electrode 3. Begin the measuring of the potential of all standard solutions, one at a time, beginning with the least concentrated and working to the highest concentrated. a.
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ISE prelab - Steven Hagedon Yan Zhao Mar-24-08 Danielle...

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