# User:Samiye Yaman/Notebook/Lab 581/2012/10/05

(Difference between revisions)
 Revision as of 09:18, 10 October 2012 (view source) (→Description)← Previous diff Revision as of 10:37, 10 October 2012 (view source) (→Data)Next diff → Line 31: Line 31: ==Data== ==Data== - * Add data and results here... + + *Final height of each column was not recorded as there was a leak between the columns. + + Time          Left column        Right column + + t=0            730us/cm            10.25us/cm + 5 min + t=1            730us/cm            10.49us/cm + 5 min + t=2            730us/cm            10.49us/cm + 15 min + t=3            730us/cm            10.57us/cm + 15min + t=4            731us/cm            10.65us/cm + 30min + t=5            731us/ cm            10.72us/cm + 30min + t=6            731us/cm            10.84us/cm + 30min + t=7            732us/cm            10.84us/ cm + 30min + t=8            732us/cm            10.90us/cm + + *The conductivity after a week was not recorded because of the leak. The leak also prevent measurement of final height of the solutions in the column. ==Notes== ==Notes==

## Revision as of 10:37, 10 October 2012

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## Description

Conductivity of PVOH film

• Conductivity of PVOH was measured by using Thermo Scientific and Orion Versa Star.
• The probes were platinium,
• The cell constant for Thermo Scientific was 0.479.
• The cell constant for Orion Versa Star was 0.4663.
• After placing the film between two columns, a solution containing 100 ppm Cl-, 100 ppm Br- and 100 ppm SO4-2(as Na+ salts, in to the left column. Place HPLC water to the right column.
• Initial height for left column is 18.2 cm.
• Initial height for right column is 18.7 cm.

## Data

• Final height of each column was not recorded as there was a leak between the columns.

Time Left column Right column

t=0 730us/cm 10.25us/cm 5 min t=1 730us/cm 10.49us/cm 5 min t=2 730us/cm 10.49us/cm 15 min t=3 730us/cm 10.57us/cm 15min t=4 731us/cm 10.65us/cm 30min t=5 731us/ cm 10.72us/cm 30min t=6 731us/cm 10.84us/cm 30min t=7 732us/cm 10.84us/ cm 30min t=8 732us/cm 10.90us/cm

• The conductivity after a week was not recorded because of the leak. The leak also prevent measurement of final height of the solutions in the column.

## Notes

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