©2026 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2026 Biological and Chemical Oceanography Data Management Office.pheophytin a (or phaeophytin) is a chlorophyll a molecule that lacks the central Mg2+ ion; measured by HPLC method, it is often reported in micrograms/liter or mole percent; CAUTION: this measurement is reported from both plankton and sediment samples.