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Arsenic speciation in the bracket fungus Fomitopsis betulina from contaminated and pristine sites
- Source :
- Environmental Geochemistry and Health. 42:2723-2732
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Uptake, distribution and speciation of arsenic (As) were determined in the bracket fungus Fomitopsis betulina (previously Piptoporus betulinus), commonly known as the birch polypore, collected from a woodland adjacent to a highly contaminated former mine in the Southwest UK and at an uncontaminated site in Quebec, Canada, with no past or present mining activity. The fruiting body was divided into cap, centre and pores representing the top, middle and underside to identify trends in the distribution and transformation of As. Total As, determined by inductively coupled plasma–mass spectrometry (ICP–MS), was approximately tenfold higher in the mushroom from the contaminated compared to the uncontaminated site. Overall, accumulation of As was low relative to values reported for some soil-dwelling species, with maximum levels of 1.6 mg/kg at the contaminated site. Arsenic speciation was performed on aqueous extracts via both anion and cation high-performance liquid chromatography–ICP–MS (HPLC–ICP–MS) and on whole dried samples using X-ray absorption near edge structure (XANES) analysis. Seven As species were detected in F. betulina from the contaminated site by HPLC–ICP–MS: arsenite (AsIII), arsenate (AsV), dimethylarsinate (DMAV), methylarsonate (MAV), trimethylarsine oxide (TMAO), tetramethylarsonium ion (Tetra) and trace levels of arsenobetaine (AB). The same As species were observed at the uncontaminated site with the exception of TMAO and Tetra. Arsenic species were localized throughout the fruiting body at the contaminated site, with the cap and pores containing a majority of AsV, only the cap containing TMAO, and the pores containing higher concentrations of DMAV and MAV as well as tetra and a trace of AB. XANES analysis demonstrated that the predominant form of As at the contaminated site was inorganic AsIII coordinated with sulphur or oxygen and AsV coordinated with oxygen. This is the first account of arsenic speciation in F. betulina or any fungi of the family Fomitopsidaceae.
- Subjects :
- Environmental Engineering
010504 meteorology & atmospheric sciences
Arsenites
media_common.quotation_subject
chemistry.chemical_element
010501 environmental sciences
01 natural sciences
Arsenicals
Mass Spectrometry
Mining
Arsenic
chemistry.chemical_compound
Geochemistry and Petrology
Cacodylic Acid
Environmental Chemistry
Fruiting Bodies, Fungal
Chromatography, High Pressure Liquid
0105 earth and related environmental sciences
General Environmental Science
Water Science and Technology
Arsenite
media_common
Fomitopsis
biology
Betulina
Quebec
Arsenate
General Medicine
biology.organism_classification
United Kingdom
Speciation
chemistry
Piptoporus betulinus
Environmental chemistry
Arsenates
Environmental Pollutants
Coriolaceae
Arsenobetaine
Environmental Monitoring
Subjects
Details
- ISSN :
- 15732983 and 02694042
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Environmental Geochemistry and Health
- Accession number :
- edsair.doi.dedup.....2dfb4d4aac841f382d3c14f10ac907e1