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Uptake and bioaccumulation of PCDD/Fs in earthworms after in situ and in vitro exposure to soil from a contaminated sawmill site
Örebro universitet, Institutionen för naturvetenskap och teknik. Environmental Staff, Arvika, Sweden. (MTM Research Centre)
Örebro universitet, Institutionen för naturvetenskap och teknik. (MTM Research Centre)
Örebro universitet, Institutionen för naturvetenskap och teknik. (MTM Research Centre)
(MTM Research Centre)ORCID-id: 0000-0001-7338-2079
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2017 (Engelska)Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 580, s. 564-571Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Uptake of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) was studied in earthworms collected from a sawmill site in Sweden with severe PCDD/Fs contamination (the hot spot concentration was 690,000 ng TEQWHO2005/kg d.w.) in order to investigate the transfer of PCDD/Fs from the site to the biota. PCDD/Fs concentrations in the collected earthworms were compared to PCDD/Fs concentrations in laboratory exposed earthworms (Eisenia fetida), which were exposed to contaminated soils from the sawmill site for 34 days. All analyses were performed by high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS). PCDD/Fs concentrations in the earthworms ranged from 290 to 520,000 pg/g (f.w.). The main congeners found in both soils and earthworms were OCDF, 1234678-HpCDF, OCDD and 1234678-HpCDD. The study showed that the PCDD/Fs in the soil were biovailable to the earthworms and the PCDD/Fs concentrations in the soils correlated with the concentrations in the earthworms. Earthworm samples from soil with lower concentration had higher bioaccumulation factors than samples from soils with high concentration of contamination. Thus, a less contaminated soil could yield higher concentrations in earthworms compared to a higher contaminated soil. Assuming that when assessing risks with PCDD/F contaminated soil, a combination of chemical analysis of soil PCDD/Fs concentrations and bioavailability should be employed for a more comprehensive risk assessment.

Ort, förlag, år, upplaga, sidor
Amsterdam, Netherlands: Elsevier, 2017. Vol. 580, s. 564-571
Nyckelord [en]
Dioxin, Contamination profile, Bioavailability, Risk assessment, Eisenia fetida, Bioaccumulation factor
Nationell ämneskategori
Analytisk kemi
Forskningsämne
Analytisk kemi; Miljökemi
Identifikatorer
URN: urn:nbn:se:oru:diva-55202DOI: 10.1016/j.scitotenv.2016.11.213ISI: 000395353600056PubMedID: 27964988Scopus ID: 2-s2.0-85008196923OAI: oai:DiVA.org:oru-55202DiVA, id: diva2:1070721
Anmärkning

Funding Agencies:

Arvika municipality, Sweden

Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Orebro University, Sweden

MTM Research Centre, Orebro University, Sweden

Tillgänglig från: 2017-02-02 Skapad: 2017-02-02 Senast uppdaterad: 2018-07-30Bibliografiskt granskad

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