简介:The speciation or physicochemical form of copper and zinc in freshwater plays an important role in reactivity,
bioavailability, and toxicity. Strong metal-binding ligands, which determine speciation, were detected by vo简介:The speciation or physicochemical form of copper and zinc in freshwater plays an important role in reactivity,
bioavailability, and toxicity. Strong metal-binding ligands, which determine speciation, were detected by voltammetric
methods, both anodic stripping voltammetry (ASV) and competitive ligand equilibration adsorptive stripping
voltammetry (CLE-AdSV); the latter technique can detect nanomolar levels of extremely strong (log K¢ > 13) ligands.
Through careful field site selection and the investigation of ultrafiltration permeate samples, natural organic ligands
were measured with limited interferences of colloidal inorganic iron- and aluminum-based trace metal-binding
phases. 详细>