Estuarine Chemistry/Physical : Estuaries are where rivers meet the sea - the exact nature of the chemical processes occurring in an estuary generally depends on :
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In Barataria Basin (eutrophic), 24 hour change nutrients largely due to biological activity:
Fresh water - high turbidity, high amounts of Fe and humics. Negatively charged particles remain separated - stable suspensions!
Example: River-borne “dissolved” iron consists of iron oxide - organic matter colloids ca. <. 4 um Stabilized by DOC (humics)
2 approaches to investigate physical and chemical removal of dissolved and particulate substances from river and sea during estuarine mixing
chloride 19 .008
sodium 10 .006
sulfate 2.7 .011
magnesium 1.2 .004
*all values in 0/00 and g/kg-1