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Other Sciences
Chemistry
Extinction Coefficient from Time series data
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[QUOTE="lee403, post: 5483984, member: 573691"] I have some time series data of the absorbance of Br[SUB]2[/SUB] formation using UV Vis spectroscopy and I need to figure out the extinction coefficient/ absorptivity. The overall reaction is BrO[SUB]3[/SUB][SUP]-[/SUP]+5Br[SUP]-[/SUP] +6H[SUP]+[/SUP]-->3Br[SUB]2[/SUB]+3H[SUB]2[/SUB]O which is expcted to go to completion I know that the equation relating absorbance to concentration is A=εcl and I have times series A measurements and can calculate the initial concentrations of BrO[SUB]3[/SUB], Br [SUP]-[/SUP]and the expected concentration of Br[SUB]2[/SUB] from the solutions I made. I just need to find ε. I first attempted to plot the absorbance v. time and find the slope where it was most linear but I don't know how valid this approach is. [/QUOTE]
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Extinction Coefficient from Time series data
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