Sources, sinks, and cycling of dissolved organic copper binding ligands in the ocean

A Ruacho, C Richon, H Whitby… - Communications Earth & …, 2022 - nature.com
Organic Cu-binding ligands have a fundamental influence on Cu distributions in the global
ocean and they complex> 99% of the dissolved Cu in seawater. Cu-binding ligands …

[HTML][HTML] Ligand exchange provides new insight into the role of humic substances in the marine iron cycle

CF Sukekava, J Downes, M Filella, B Vilanova… - … et Cosmochimica Acta, 2024 - Elsevier
Organic complexation of iron plays a crucial role in preventing its precipitation, facilitating its
transport, and modulating its reactivity and bioavailability in natural waters. Although humic …

Ocean iron cycle feedbacks decouple atmospheric CO2 from meridional overturning circulation changes

JM Lauderdale - Nature Communications, 2024 - nature.com
Abstract The ocean's Meridional Overturning Circulation (MOC) brings carbon-and nutrient-
rich deep waters to the surface around Antarctica. Limited by light and dissolved iron …

Recommendations for best practice for iron speciation by competitive ligand exchange adsorptive cathodic strip** voltammetry with salicylaldoxime

L Mahieu, D Omanović, H Whitby, KN Buck, S Caprara… - Marine Chemistry, 2024 - Elsevier
The method of competitive ligand exchange followed by adsorptive cathodic strip**
voltammetry (CLE-AdCSV) allows for the determination of dissolved iron (DFe) organic …

Process studies at the air-sea interface after atmospheric deposition in the Mediterranean Sea: Objectives and strategy of the PEACETIME oceanographic campaign …

C Guieu, F d'Ortenzio, F Dulac… - Biogeosciences …, 2020 - bg.copernicus.org
In spring, the Mediterranean Sea, a well-stratified low nutrient low chlorophyll region,
receives atmospheric deposition both desert dust from the Sahara and airborne particles …

Chasing iron bioavailability in the Southern Ocean: Insights from Phaeocystis antarctica and iron speciation

M Fourquez, DJ Janssen, TM Conway, D Cabanes… - Science …, 2023 - science.org
Dissolved iron (dFe) availability limits the uptake of atmospheric CO2 by the Southern
Ocean (SO) biological pump. Hence, any change in bioavailable dFe in this region can …

Occurrence and cycle of dissolved iron mediated by humic acids resulting in continuous natural photodegradation of 17α-ethinylestradiol

D Cui, H He, W **e, S Yang, Z Guo, Z Liao, F Liu… - Journal of Hazardous …, 2024 - Elsevier
Abstract 17α-ethinylestradiol (EE2), a synthetic endocrine-disrupting chemical, can degrade
in natural waters where humic acids (HA) and dissolved iron (DFe) are present. The iron is …

New insights into the organic complexation of bioactive trace metals in the global ocean from the GEOTRACES era

H Whitby, J Park, Y Shaked, RM Boiteau, KN Buck… - Oceanography, 2024 - JSTOR
The GEOTRACES program has greatly expanded measurements of dissolved trace metal
concentrations across ocean basins, but to understand the behavior and cycling of metals …

Characterization of the vertical size distribution, composition and chemical properties of dissolved organic matter in the (ultra) oligotrophic Pacific Ocean through a …

P Fourrier, G Dulaquais, C Guigue, P Giamarchi… - Marine Chemistry, 2022 - Elsevier
This work presents a multi-analytical approach for the characterization of marine dissolved
organic matter (DOM). The determination of marine dissolved organic carbon (DOC) was …

The role of humic-type ligands in the bioavailability and stabilization of dissolved iron in the Western Tropical South Pacific Ocean

G Dulaquais, P Fourrier, C Guieu, L Mahieu… - Frontiers in Marine …, 2023 - frontiersin.org
The high N2 fixation rate observed in the Lau Basin of the western tropical South Pacific
Ocean (WTSP) is fueled by iron (Fe) released from shallow hydrothermal systems …