Combining sequential extractions with bulk and micro X-ray spectroscopy to elucidate iron and phosphorus speciation in sediments of an iron-treated peat lake

2024/11/12 by Melanie Münch, Andreas Voegelin, Luís Carlos Colocho Hurtarte +2 · 1 voice
Earth and Planetary Sciences · Environmental Science · #Geochemistry and Elemental Analysis #Heavy metals in environment #Mine drainage and remediation techniques

paper · pdf · doi:10.1039/d4em00402g

openalex publication_date 2024/11/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

) and that most of the Fe(II) extracted by hydrochloric acid (HCl) originated from phyllosilicate minerals. Formation of an amorphous inorganic-organic co-precipitate upon Fe addition constitutes an effective P sink in the studied peaty sediments. However, the high intrinsic reactivity of this nanoscale co-precipitate and its fine distribution in the OM matrix makes it very susceptible to reductive dissolution, leading to P remobilization under reducing conditions.

Citations

• Persistent internal phosphorus loading during summer in shallow eutrophic lakes
• DITHIONITE- AND OXALATE-EXTRACTABLE Fe AND Al AS AIDS IN DIFFERENTIATING VARIOUS CLASSES OF SOILS
• Soil controls of phosphorus in runoff: Management barriers and opportunities

Discussions

• ESPIs Issue 3 Inside Front Cover looks at how Fe can affect P speciation and uses XAS to assess Fe-P co-precipitates Check it out now👇 doi.org/10.1039/D4EM... #EnvSci #EnvironmentalScience #Chemistry [bsky, 1 points, 0 comments]

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