Ultraviolet/Visible (UV-Vis) Spectroscopy of Potassium Permanganate. By Robert Bohman November 4 th 2006 CH EN 4903. Importance to industry. Potassium Permanganate is used to kill bacteria in reclaimed water
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By Robert Bohman
November 4th 2006
CH EN 4903
λ = wavelength (m)
v = frequency (Hz)
v` = wavenumber (m-1)
Schematic of Single-Beam Spectrophotometer, P0 is the irradiance entering sample, P is the irradiance leaving sample, and b is pathlength2
P = irradiance (energy per unit area of light beam)
ε = molar absorptivity (M-1 cm-1)
b = pathlength (cm)
c = concentration (M)
c = A/0.029
= (999.8392 + 16.945176t – 7.9870401*10-3t2 – 46.170461*10-6t3 + 105.56302*10-9t4 – 280.54253*10-12t5)/(1 + 16.879850*10-3t)5
36 ± 1.00 ppm
Can be determined by R2 value for slope of calibration curve.
For this example R2 = 0.999
To Triston Thorpe and Jason Judkins in helping with the experiment
5. CRC Handbook of Chemistry and Physics. Pg. F-6. Cleveland, Ohio: The Chemical Rubber Co., 1968.