2017
Bioavailability of five hydrophobic organic compounds to earthworms from sterile and non-sterile artificial soils
ŠMÍDOVÁ, Klára, Sooyeon KIM a Jakub HOFMANZákladní údaje
Originální název
Bioavailability of five hydrophobic organic compounds to earthworms from sterile and non-sterile artificial soils
Autoři
ŠMÍDOVÁ, Klára (203 Česká republika, domácí), Sooyeon KIM (410 Korejská republika, domácí) a Jakub HOFMAN (203 Česká republika, garant, domácí)
Vydání
Chemosphere, OXFORD, PERGAMON-ELSEVIER SCIENCE LTD, 2017, 0045-6535
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.427
Kód RIV
RIV/00216224:14310/17:00100270
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000401385900024
Klíčová slova anglicky
Bioaccumulation factors; Artificial soil; Sterilization; Organic carbon content; Aging
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 29. 3. 2018 11:10, Ing. Nicole Zrilić
Anotace
V originále
Bioaccumulation factors (BAFs) of organic pollutants to soil biota, often required by risk assessment, are mostly obtained in non-sterile laboratory-contaminated artificial soils. However, microbial degradation has been indicated by many authors to influence the fate of hydrophobic organic compounds (HOCs) in soils. A question arises if the microbial community of peat which is used for artificial soil preparation affects the measured values of BAFs. In this study the effect of soil microorganisms on bioavailability of HOCs was studied and a portion of each soil was sterilized by gamma irradiation. Results indicated that the sterilization process significantly affected the fate of polycyclic aromatic hydrocarbons (PAHs; phenanthrene and pyrene) and increased bioavailability of these compounds to earthworms with BAFs several times higher in the sterile soils compared to their non-sterile variants. This suggests that sterilization of soils can be used as the "worst-case scenario" for laboratory tests of toxicity or bioaccumulation of biodegradable HOCs such as PAHs. It represents a situation of limited microbial degradation resulting in higher bioavailable fractions to other organisms (e.g. invertebrates). This may be the case in soils where microbial communities face stresses caused by contamination or land management. The bioavailability of chlorinated HOCs (lindane, 4,4'-DDT and PCB 153) was not affected by sterilization, as their BAFs were similar in the sterile and non-sterile soils during the experiment.
Návaznosti
LM2015051, projekt VaV |
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LO1214, projekt VaV |
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