|The photodegradation of domoic acid and the effects of metal chelation
||Domoic acid added to 0.2 µm-filtered Wrightsville Beach, NC seawater (WBSW) to a final concentration of 100 nM rapidly photodegraded to 75% of its initial concentration under simulated sunlight after ten hours of irradiation. The average first order ...
|Characterization of chromophoric dissolved organic matter with iron chelates in rain water
||The existence of Fe(II) and Fe(III) complexed CDOM has important ramifications
for the speciation of iron in atmospheric waters. The Fe(III)-CDOM complex is a
precursor to Fe(II) photochemical production where a ligand to metal charge transfer
|Mercury concentration and speciation in coastal rainwater
||Mercury exists in mainly two oxidation states in the atmosphere, Hg0 and Hg(II).
Inorganic divalent mercury, Hg(II), has a greater solubility; therefore is in higher
concentration in rainwater, than Hg0. The toxic species, methylmercury is an organ...
|Biogeochemical cycling of domoic acid and its isomers in the ocean
||Domoic acid, a non-protein amino acid, is a neurotoxin produced by species of the
marine diatom Pseudo-nitzschia. Adsorption of dissolved domoic acid (DA) and its geometrical
isomers (iso-DAs D, E, and F) was assessed in filtered seawater solutions...
|Chromophoric dissolved organic matter in coastal rainwater
||Chromophoric dissolved organic matter (DOM) was measured in 37 rain events in
Wilmington, NC, between September 15, 2005 to September 6, 2006. Each rain event was
analyzed via 3D fluorescence, UV-Vis absorption spectroscopy, nuclear magnetic resona...
|Photochemistry of brevetoxin, PbTx-2, produced by the dinoflagellate, Karenia brevis
||The predominant brevetoxin produced by Karenia Brevis, PbTx-2 was added to 0.2 µmfiltered
Wrightsville Beach, North Carolina seawater (WBSW) and irradiated under simulated
sunlight for six hours to determine its photolability. The average first ord...