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

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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