Cited by 105Selenium in Biological SystemsHeavy metals in environmentGeochemistry and Elemental Analysis

The association between selenium and humic substances in forested ecosystems—laboratory evidence

Gustafsson, Jon Petter, Johnsson, Lars·1994·Applied Organometallic Chemistry

Abstract

In the soils and aquatic systems of coniferous forests, selenium is usually associated with humic substances. To clarify further some of the mechanisms involved, labelled and unlabelled selenite were added to two forest floors and to a brownwater lake. Sequential extraction procedures and chromatographic methods were used to evaluate the resulting association between selenium and humic substances. It was observed that the forest floors fixed most of the added selenite by means of microbial reductive incorporation and that selenium was preferentially incorporated into lowmolecular‐weight fractions of the humic substances. By contrast, selenium reduction was much slower in the brown‐water lake and instead, inorganic complexation of selenite to metal–humic complexes was important during the experiment, provided that the concentrations of competing ligands were low.

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Crossref · 10.1002/aoc.590080209

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20 of 20 references verified0 citation errors · 0 not checkable

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  • Increases in organic matter have been proposed to increase microbial activity and therefore promote the incorporation of inorganic selenium into biomass.

    “Finally, increases in OM have been proposed to increase microbial activity and therefore promote the incorporation of inorganic Se into biomass [144,165,166].”

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Authors
Gustafsson, J. P., & Johnsson, L.
Affiliations
  • KTH Royal Institute of Technology (SE)
  • Uppsala University (SE)
Venue
Applied Organometallic Chemistry
Publisher
Wiley
Published
1994-04
Volume
8
Issue
2
Pages
141-147
ISSN
  • 0268-2605 (ISSN-L)
  • 1099-0739
OpenAlex
W2056456871
Cited by
105
References
20
Citations by year
2026: 1 · 2025: 7 · 2024: 4 · 2023: 7 · 2022: 10 · 2021: 6 · 2020: 7 · 2019: 4 · 2018: 7 · 2017: 4 · 2016: 8 · 2015: 6 · 2014: 2 · 2013: 1 · 2012: 4
FWCI
0.90
Type
journal article
Language
en
Open access
closed
Locations
Applied Organometallic Chemistry (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
Keywords
selenium, humic substances, selenite, coniferous forest soils, forest floor, microbial reduction, metal-humic complexes, sequential extraction, selenium speciation

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