Title : Persistent arsenate-iron(iii) oxyhydroxide-organic matter nanoaggregates observed in coal.

Pub. Date : 2021 Oct 1

PMID : 34950482






4 Functional Relationships(s)
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1 Understanding how natural nanoaggregates of iron (Fe) and organic matter (OM), currently identified in organic rich soil or peat, interact with metals and metalloids is environmentally significant. Iron oncomodulin 2 Homo sapiens
2 Significantly, lower Fe-Fe coordination numbers (CN) of 0.6-1.1 relative to those in 2-line ferrihydrite (CN = 1.6) and goethite (CN = 2.1) suggest that these Fe(iii) oxyhydroxides are likely Fe-OM nanoaggregates protected by OM encapsulation and adsorption of arsenate. Iron oncomodulin 2 Homo sapiens
3 Significantly, lower Fe-Fe coordination numbers (CN) of 0.6-1.1 relative to those in 2-line ferrihydrite (CN = 1.6) and goethite (CN = 2.1) suggest that these Fe(iii) oxyhydroxides are likely Fe-OM nanoaggregates protected by OM encapsulation and adsorption of arsenate. Iron oncomodulin 2 Homo sapiens
4 Such structurally stabilized composites of As(v)-Fe(iii)-OM may be more widely distributed and allow oxidized As and Fe to persist in other organic-rich, reducing environments. Iron oncomodulin 2 Homo sapiens