Using a battery of bioassays, benthic phytoplankton and the AUSRIVAS method to monitor long-term coal tar contaminated sediment in the Cache la Poudre River, Colorado

WATER RESEARCH

卷:39

Article

Oberholster, PJ ; Botha, AM ; Cloete, TE

关键词: coal tar;    sediment toxicity;    biotest battery;    river bioassessment;   

DOI  :  10.1016/j.watres.2005.08.029

来源: Elsevier

【 摘 要 】

This survey provides information on sediment toxicity and structural characteristics of the macroinvertebrates and benthic phytoplankton at 10 locations in the Cache la Poudre River after long-term exposure to coal tar residue. The application of the Australian river bioassessment system (AUSRIVAS) as well as a biotest battery was used to evaluate the river 'health' condition. Coal tar is a dense nonaqueous-phase liquid of significant environmental concern due to its toxicity and persistence in the subsurface. Organisms like Selenastrum capricornutum, Daphnia magna and Chironomus tentans, representing different complexities in the biosphere, were selected as test systems for ecotoxicological studies. The results obtained in this study indicate that a biotest battery, macro invertebrate and benthic phytoplankton communities are in principle suitable biological tools for evaluation of toxic oil and coal-derived substances in longterm contaminated river sediment. (c) 2005 Elsevier Ltd. All rights reserved.

【 授权许可】

Free