Fitzsimmons filling bottles of seawater Published on October 12, 2012 in Geotraces: Building a Periodic Table for the OceanFull resolution ( × ) ← Previous Fitzsimmons and Ana Aguilar-Islas, assistant professor at University of Alaska Fairbanks, prepare to fill bottles with seawater collected from a specific depth in the big ‘GO-FLO’ tanks. They will be measuring the dissolved iron in these samples.