Fig. 1: Dissolved copper and organic ligands in estuarine systems.
From: Sources, sinks, and cycling of dissolved organic copper binding ligands in the ocean
Data from select studies showing typical A dissolved Cu concentrations (x) and organic Cu-binding ligand concentrations (circles), and along the river to seawater continuum. B Concentrations of electroactive humic substances expressed in terms of their potential Cu-binding equivalent concentration, based on values calculated for SRHA in Whitby et al.43. Amazon, Mersey, and Sapelo data use the CuHS technique43; San Francisco Bay, Fundao Dam, and Irish Sea use the FeHS technique243,244,245, while Loire Estuary uses the MoHS technique92; different methods have been shown to give comparable eHS concentrations35,246.
