Journal
SCIENCE ADVANCES
Volume 8, Issue 31, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abm2249
Keywords
-
Categories
Funding
- German Research Foundation [KO 2906/13-1, GL 807/2-1]
- German Research Foundation Cluster of Excellence Helmholtz Association [390741603]
Ask authors/readers for more resources
Dissolved organic matter (DOM) is an important component of Earth's hydrosphere and its interaction with trace metals (TMs) plays a crucial role in biogeochemical cycles. This study reveals that the biogeochemistry of TMs bound to DOM in the Amazon plume is primarily determined by the chemical nature of the metals.
Dissolved organic matter (DOM) is a distinct component of Earth's hydrosphere and provides a link between the biogeochemical cycles of carbon, nutrients, and trace metals (TMs). Binding of TMs to DOM is thought to result in a TM pool with DOM-like biogeochemistry. Here, we determined elemental stoichiometries of aluminum, iron, copper, nickel, zinc, cobalt, and manganese associated with a fraction of the DOM pool isolated by solid-phase extraction at ambient pH (DOMSPE-amb) from the Amazon plume. We found that the rank order of TM stoichiometry within the DOMSPE-amb fraction was underpinned by the chemical periodicity of the TM. Furthermore, the removal of the TMSPE-amb pool at low salinity was related to the chemical hardness of the TM ion. Thus, the biogeochemistry of TMs bound to the DOMSPE-amb component in the Amazon plume was determined by the chemical nature of the TM and not by that of the DOMSPE-amb.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available