Soluble iron, defined as the amount of the element found in a unit volume of millipore-filtered sea water, after oxidation of organic matter, has been determined on samples collected in insh!Jre waters of the State of Washington. After filtration the samples were oxidized. The particulate matter and its iron content were also determined. Bathophenanthrolene was the reagent used....
Laevastu, Taivo, and Thomas G. Thompson. 1958. "Soluble iron in coastal waters." Journal of Marine Research 16, (3). https://elischolar.library.yale.edu/journal_of_marine_research/893