User:Samiye Yaman/Notebook/Lab 581/2012/10/31

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Objective

Description

Part 1

  • Porphyrin film which was cross-linked on 19/10/2012 was placed in to a 1% HCL solution with a volume of 100mL.

Part 2: Prepare a porphyrin solution of 50micM

Part 3: UV-Vis

  • Combination of 1 ml of salt/acid (50micM), 1 ml of 50 micM of porphyrin and 2 ml of HPLC water.

Data

ISE results for sodium sulfate dilutions

  • Dilution 1(1.25ppm)= -180mV
  • Dilution 2(2.5ppm)= -182.6mV
  • Dilution 3(5ppm) = -182.4mV
  • Dilution 4(10ppm )= -177.4mV
  • Dilution 5(20ppm)= -174.6mV


  • We decided detection limit was between dilution 1 and 2.
  • More negative number means less sodium ion in the solution.
  • The porphyrin films prepared on 10/10/2012 had a yellowish green color. They were not clear as the other films.

Notes

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