Distribution of copper-complexing ligands in Canadian Arctic waters as determined by immobilized copper(II)-ion affinity chromatography
| Autor: | Andrew R.S. Ross, Sarah L. Jackson, Richard L. Nixon, Jay T. Cullen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Cyanobacteria 010504 meteorology & atmospheric sciences biology Ligand 010604 marine biology & hydrobiology chemistry.chemical_element General Chemistry Oceanography biology.organism_classification 01 natural sciences Copper chemistry Arctic Affinity chromatography Environmental chemistry Dissolved organic carbon Environmental Chemistry Seawater geographic locations 0105 earth and related environmental sciences Water Science and Technology Canada Basin |
| Zdroj: | Marine Chemistry. 215:103673 |
| ISSN: | 0304-4203 |
| Popis: | Complexation by dissolved organic ligands affects the bioavailability and distribution of copper and other bioactive trace metals in seawater. However, relatively little is known about the origin and identity of marine copper-complexing ligands, particularly in Arctic waters. We used immobilized copper(II)-ion affinity chromatography (IMAC) to isolate dissolved ( in situ chlorophyll-a fluorescence suggest that marine phytoplankton or cyanobacteria could be an important source of copper ligands. A correlation was also observed between copper ligand and dissolved copper concentrations in Baffin Bay. Comparison of these results with published data for humic substances and other dissolved organic matter suggests that terrestrial input contributes to the pool of ligands captured by IMAC, particularly in the Canada Basin and Canadian Arctic Archipelago. |
| Databáze: | OpenAIRE |
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