J 2016

Bioavailability and mobility of organic contaminants in soil: new three-step ecotoxicological evaluation

PROKOP, Zbyněk, Anežka NEČASOVÁ, Jana KLÁNOVÁ and Pavel ČUPR

Basic information

Original name

Bioavailability and mobility of organic contaminants in soil: new three-step ecotoxicological evaluation

Authors

PROKOP, Zbyněk (203 Czech Republic, belonging to the institution), Anežka NEČASOVÁ (203 Czech Republic, belonging to the institution), Jana KLÁNOVÁ (203 Czech Republic, belonging to the institution) and Pavel ČUPR (203 Czech Republic, guarantor, belonging to the institution)

Edition

Environmental Science and Pollution Research, HEIDELBERG (GERMANY), SPRINGER HEIDELBERG, 2016, 0944-1344

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30304 Public and environmental health

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.741

RIV identification code

RIV/00216224:14310/16:00089236

Organization unit

Faculty of Science

UT WoS

000371156100031

Keywords in English

Bioavailability; Mobility; Ecotoxicological evaluation; Toxicity; Soil contamination; Bioremediation; Risk identification/assessment

Tags

Tags

International impact, Reviewed
Změněno: 19/4/2016 13:53, Mgr. Michaela Hylsová, Ph.D.

Abstract

V originále

A novel approach was developed for rapid assessment of bioavailability and potential mobility of contaminants in soil. The response of the same test organism to the organic extract, water extract and solid phase of soil was recorded and compared. This approach was designed to give an initial estimate of the total organic toxicity (response to organic extractable fraction), as well as the mobile (response to water extract) and bioavailable fraction (response to solid phase) of soil samples. Eighteen soil samples with different levels of pollution and content of organic carbon were selected to validate the novel three-step ecotoxicological evaluation approach. All samples were chemically analysed for priority contaminants, including aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), hexachlorocyclohexane (HCH) and dichlordiphenyltrichloroethane (DDT). The ecotoxicological evaluation involved determination of toxicity of the organic, mobile and bioavailable fractions of soil to the test organism, bacterium Bacillus cereus. We found a good correlation between the chemical analysis and the toxicity of organic extract. The low toxicity of water extracts indicated low water solubility, and thus, low potential mobility of toxic contaminants present in the soil samples. The toxicity of the bioavailable fraction was significantly greater than the toxicity of water-soluble (mobile) fraction of the contaminants as deduced from comparing untreated samples and water extracts. The bioavailability of the contaminants decreased with increasing concentrations of organic carbon in evaluated soil samples. In conclusion, the three-step ecotoxicological evaluation utilised in this study can give a quick insight into soil contamination in context with bioavailability and mobility of the contaminants present. This information can be useful for hazard identification and risk assessment of soil-associated contaminants.

Links

LM2011028, research and development project
Name: RECETOX ? Národní infrastruktura pro výzkum toxických látek v prostředí
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