Superoxide decay rates during METEOR cruise M83/1 ...

Superoxide is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can be produced both via photochemical and biolog...

Full description

Bibliographic Details
Main Authors: Wuttig, Kathrin, Heller, Maija I, Croot, Peter L
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
Event label
DEPTH, water
Copper, log-decay rate
Standard deviation
Copper, intercept of decay rate
Iron, log-decay rate
Iron, intercept of decay rate
Manganese, log-decay rate
Manganese, intercept of decay rate
Sea-water, decay rate
Diethylenetriaminepentaacetic acid, decay rate
Go-Flo bottles
M83/1
Meteor 1986
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.823500
https://doi.pangaea.de/10.1594/PANGAEA.823500
Description
Summary:Superoxide is an important transient reactive oxygen species (ROS) in the ocean formed as an intermediate in the redox transformation of oxygen (O2) into hydrogen peroxide (H2O2) and vice versa. This highly reactive and very short-lived radical anion can be produced both via photochemical and biological processes in the ocean. In this paper we examine the decomposition rate of O2- throughout the water column, using new data collected in the Eastern Tropical North Atlantic (ETNA) Ocean. For this approach we applied a semi factorial experimental design, to identify and quantify the pathways of the major identified sinks in the ocean. In this work we occupied 6 stations, 2 on the West African continental shelf and 4 open ocean stations, including the CVOO time series site adjacent to Cape Verde. Our results indicate that in the surface ocean, impacted by Saharan aerosols and sediment resuspension, the main decay pathways for superoxide is via reactions with Mn(||) and organic matter. ... : log value=6.00 means smaller than 6 ...

Similar Items