The Beer-Lambert law is a simple rule that explains how the amount of light absorbed by a solution is related to the concentration of the substance in it.
In simple terms:
- The more concentrated a solution is, the more light it absorbs.
- The longer the path the light travels through the solution, the more light is absorbed.
So, by measuring how much light a solution absorbs, we can estimate the concentration of the substance in that solution.
It’s a key principle used in UV-Vis spectrophotometry to determine how much of a chemical is present.