Metal Speciation/Fractionation in Different Phases of the Marine Environment
A special issue of Environments (ISSN 2076-3298).
Deadline for manuscript submissions: closed (1 October 2020) | Viewed by 6036
Special Issue Editor
Special Issue Information
Dear Colleagues,
Chemical speciation and fractionation of metals occurring in different phases of the marine environment are among the fundamental principles explaining their marine biogeochemical variability and cycles. Although metals’ bioavailability is principally related to their ‘free’ (hydrated) forms, their interactions with the active sites of natural organic chelators effectively control their speciation, hence affecting their mobility, bioavailability, and toxicity.
In an attempt to identify and assess the complex parameters which could provide information on metal species’ levels, several analytical methods and techniques are applied in the different phases of the marine environment. Investigating the speciation/fractionation of metals still remains challenging, under the perspective of giving the best estimate of their bioavailable fractions. Thermodynamic modeling together with specialized sensitive analytical techniques have been applied for the study of metal complexation with chelators, present at low concentrations in seawater. Metals’ fractionation in sediments, which may occasionally act as a source and/or sink of metals, is studied through the application of several schemes targeted at the evaluation of metals’ mobilization and fluxes.
Original, unpublished research papers are invited in this Special Issue, providing innovative insights into advances, novel approaches, and recent findings on the wide aspect of speciation/fractionation of metals in the different phases of the marine environment (dissolved and particulate phases of seawater and sediments). Emphasis is on metal speciation and bioavailability, as well as on current tools applied in their study.
Dr. Aikaterini Sakellari
Guest Editor
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Keywords
- metal speciation/fractionation
- marine environmental phases
- metal bioavailability
- metal toxicity
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