Laboratory testing of persistent organic pollutants toxicity on soil microbial biomass - application limits, drawbacks and benefits

ČERNOHLÁVKOVÁ, Jitka and Jakub HOFMAN. Laboratory testing of persistent organic pollutants toxicity on soil microbial biomass - application limits, drawbacks and benefits. In Book of Abstracts of ECOTOX 2005. ISBN 80-210-3799-7. 2005.

Basic information

• Original name: Laboratory testing of persistent organic pollutants toxicity on soil microbial biomass - application limits, drawbacks and benefits
• Name in Czech: Laboratorní testování toxicity perzistentních organických polutantů na půdních mikroorganismech - výhody a limity
• Authors: ČERNOHLÁVKOVÁ, Jitka (203 Czech Republic) and Jakub HOFMAN (203 Czech Republic, guarantor).
• Edition: Book of Abstracts of ECOTOX 2005, 2005.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10511 Environmental sciences
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/05:00013150
• Organization unit: Faculty of Science
• ISBN: 80-210-3799-7
• Keywords in English: microbial biomass; laboratory test; persistent organic pollutants
• Tags: laboratory test, microbial biomass, Persistent organic pollutants
• Tags: International impact

Abstract

Soil toxicity test with indigenous microflora is based on laboratory incubation of well defined natural soil which was spiked with tested chemical at the beginning of the test. Changes in microbial biomass, its respiration and nitrogen mineralization are recorded as effect endpoints. This method is well standardized under OECD, US EPA and SETAC guidelines for testing chemicals and pesticides. In our study, selected persistent organic pollutants were tested to identify the applicability of the tests for POPs effects routine testing. Selected POPs were: toxaphene (pesticide), short chain chlorinated paraffin (industrial chemical), and four aza-PAHs (industrial by-product). Microbial biomas Cbio, basal respiration (BR), substrate induced respiration (SIR), and BIOLOG functional diversity were measured as endpoints after 2 weeks and 4 weeks of exposure. The most sensitive parameter was substrate induced respiration. Several principal problems were found for FE method for measuring microbial biomass Cbio due to high carbon amount in POPs. Despite all these practical disadvantages, microbial biomass parameters are crucial ecosystem indicators and their information value requires to be considered during POPs ecotoxicity evaluation.

Abstract (in Czech)

viz angl.

Links

• GP525/04/P159, research and development project: Name: Vliv nově rozpoznávaných prioritních perzistentních organických polutantů (POPs) na organismy v půdním ekosystému

Investor: Czech Science Foundation, Effects of newly recognized priority persistent organic pollutants (POPs) on organisms of soil ecosystem

• MSM0021622412, plan (intention): Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)

Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)