J 2017

Bioavailability of five hydrophobic organic compounds to earthworms from sterile and non-sterile artificial soils

ŠMÍDOVÁ, Klára, Sooyeon KIM and Jakub HOFMAN

Basic information

Original name

Bioavailability of five hydrophobic organic compounds to earthworms from sterile and non-sterile artificial soils

Authors

ŠMÍDOVÁ, Klára (203 Czech Republic, belonging to the institution), Sooyeon KIM (410 Republic of Korea, belonging to the institution) and Jakub HOFMAN (203 Czech Republic, guarantor, belonging to the institution)

Edition

Chemosphere, OXFORD, PERGAMON-ELSEVIER SCIENCE LTD, 2017, 0045-6535

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10511 Environmental sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 4.427

RIV identification code

RIV/00216224:14310/17:00100270

Organization unit

Faculty of Science

UT WoS

000401385900024

Keywords in English

Bioaccumulation factors; Artificial soil; Sterilization; Organic carbon content; Aging

Tags

Tags

International impact, Reviewed
Změněno: 29/3/2018 11:10, Ing. Nicole Zrilić

Abstract

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.

Links

LM2015051, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR
LO1214, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)
Investor: Ministry of Education, Youth and Sports of the CR