Surface tension of exopolymeric substances in seawater in the presence or absence of oil and/or Corexit

Measurements of surface tension in the EPS colloidal size fraction in seawater samples from mesocosms and comparison to protein to polysaccharide ratios. Surface tension, pH measurements of colloidal EPS and model EPS components. Concentrations of the colloidal EPS proteins, neutral sugars, and uronic acids.