# Absorption coefficient, relative spectral

### k(l)

Previously referred to as "extinction coefficient el" .

Quotient of the spectral absorption coefficient a(l) of a solution and the concentration c of the substance dissolved in it:

 k(l) = a(l)/c

Thus k is the substance constant that makes it possible to calculate the concentration of the dissolved substance from the spectral absorbance A according to the Lambert-Beer Law. It is a function of the wavelength and is determined by absorption spectroscopy.

Index

### Contact

{{selectedCountry.Name}} {{country.Name}}