titration absorption titration 2009-09-16T03:19:00Z https://orcid.org/0000-0001-5985-7429 absorption spectral titration The process of determining the quantity of a sample by adding measured increments of a titrant until the end-point, at which essentially all of the sample has reacted, is reached. The titration is followed by measuring the absorbance of radiation by the sample. absorbance titration CHMO:0002409