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

被引：42

作者：

Lapertot, Milena Eleonore ^{[1
]}

Pulgarin, Cesar ^{[1
]}

机构：

[1] EPFL, Lab Environm Biotechnol, Stn 6, CH-1015 Lausanne, Switzerland

来源：

CHEMOSPHERE | 2006年 / 65卷 / 04期

关键词：

biodegradation; OECD tests; pesticides; volatile organic compounds; predictive models;

D O I：

10.1016/j.chemosphere.2006.01.046

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 (TM)) and bacterial viability (Bac-light (TM)) 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. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：682 / 690

页数：9

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