Measures notes and methods for trace metal concentrations
Notes
      1. Iron (Fe) and Aluminum (Al) concentrations are in nmoles/liter
      2. The filter column denotes whether or not the sample was filtered,
         and the filter size used (0 = not filtered; 0.2 = sample passed
         through 0.2 micron filter and 5 = sample passed through a 5 micron
         filter).

Methods
      These samples were run using the methods found in:

         a) Measures, C.I., J. Yuan, and J.A. Resing, 1995.
              Determination of iron in seawater by flow injection
              analysis using in-line preconcentration and
              spectrophotometric detection. Marine Chemistry,50:3-12.

         b) Resing, J.A. and C.I. Measures, 1994.
              Fluorometric determination of Al in seawater by flow injection
              analysis with in-line preconcentration.  Analytical Chemistry,
              66:4105-4111.