Dictionary » M » Molar absorbancy index

Molar absorbancy index



(spectrophotometry) A measure of how strongly a chemical species absorbs light at a particular wavelength. It is often expressed in units of cm-1M-1.


It is symbolized by ε in Beer-Lambert law, A = εcl, where A is the absorbance of the sample, l is the pathlength (usually in centimeter), and c is the concentration of the of absorbing species in the material (moles per liter).


See also: Beer-Lambert law

Please contribute to this project, if you have more information about this term feel free to edit this page

This page was last modified 14:17, 10 September 2009. This page has been accessed 2,961 times. 
What links here | Related changes | Permanent link