Biodegradability assessment of several priority hazardous substances: Choice, application and relevance regarding toxicity and bacterial activity | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

4140358

Reference Type

Journal Article

Title

Biodegradability assessment of several priority hazardous substances: Choice, application and relevance regarding toxicity and bacterial activity

Author(s)

Lapertot, ME; Pulgarin, C

Year

2006

Is Peer Reviewed?

Journal

Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298

Volume

Issue

Page Numbers

682-690

Language

English

PMID

16566958

DOI

10.1016/j.chemosphere.2006.01.046

Web of Science Id

WOS:000241652000020

Abstract

Nineteen compounds listed in the category of priority substances (PS) were selected for a biodegradation study using standardized tests. The compounds consist of pesticides, chlorinated solvents and volatile organic compounds (VOCs). In this paper, the choice of the most suitable method is discussed in relation to the physico-chemical properties of each substance. Zahn–Wellens, manometric respirometry and closed-bottle tests are alternatively used. Experimental results are presented and interpreted. Toxicity (Microtox™) and bacterial viability (Bac-light™) are also used as tools to investigate the influence of each substance on the microbial population (activated sludge). In addition, experimental values are compared with predictive data calculated according to quantitative structure activity relationships (QSARs) models. Biodeg Models were permitted to correctly estimate 17 substances; Survey Models and screening tests also revealed the same behavior for 16 target compounds.