Copper titrations were conducted at sea with differential pulse anodic stripping voltammetry
to examine the degree to which copper was associated with organic ligands. Greater than …

The complexation of trace metals by organic ligands has long been proposed to play a
significant role in determining trace metal speciation in seawater. However, analytical …

Copper (Cu) is an essential micronutrient for marine phytoplankton, but can cause toxicity at
elevated intracellular concentrations. The majority of Cu (> 99.9%) in oceanic surface waters …

The release of potentially toxic metals, such as copper (Cu), into the water column is of
concern during polymetallic nodule mining. The bioavailability and thus toxicity of Cu is …

Benthic fluxes were evaluated as a source of strong Cu-complexing ligands (K′ CuL>
1011) to the water column of the organic-rich Cape Fear River estuary along the North …

Described as a 'Goldilocks element'in seawater, the free copper ion (Cu 2+) concentration in
open ocean waters is generally low enough to avoid causing toxicity to marine algae and …

Copper (Cu) as a bioactive trace metal in the ocean has widely been studied in the context
of chemical speciation. However, this trace metal is extremely understudied in the context of …

Environmental context Copper (Cu) is a metal of ecotoxicological concern in contaminated
coastal areas. Cu present as the free ion is considered the most bioavailable fraction of the …

Hydrothermal vents at the seafloor release large volumes of metal-rich fluids into the ocean.
Some of these metals are biologically essential (such as Fe), while others may be toxic (eg …

Abstract The Amazon is Earth's largest river by volume output, making it an important source
of trace metals and dissolved organic matter (DOM) to the Atlantic Ocean. Despite major …