gaasi või gaasisegukomponendi (laiemas täh-s ka lahusekomponendi) neeldumine vedelikus või tahkes aines - absorbendis
the logarithm of the ratio of the intesity of light incident on a sample to that transmitted by it. It is usually directly proportional to the concentration of the absorbing substance in a solution.
The butterfat is dissolved in light petroleum and the absorbance measured at 440 nm. The apo carotenic ester content is determined by reference to an external standard.
