The use of the Microtox system for evaluation of toxicity of the wastes in Vitkovice steelworks, Ostrava (Czechoslovakia)

Samples were taken from 10 waste lagoons of the Vitkovice Steelworks Enterprise. They were homogenized, mixed with water, shaken for 6 h, settled for 18 h, then centrifuged. The extracts were tested by the Microtox method employing Photobacterium phosphoreum to give EC50 values after 5, 15 and 30 mi...

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Bibliographic Details
Published in:The Science of the total environment 1993-01, Vol.Supplement, p.195-206
Main Authors: Skacel, A, Riha, V, Raclavsky, K, Hlavata, M
Format: Article
Language:English
Online Access:Get full text
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Summary:Samples were taken from 10 waste lagoons of the Vitkovice Steelworks Enterprise. They were homogenized, mixed with water, shaken for 6 h, settled for 18 h, then centrifuged. The extracts were tested by the Microtox method employing Photobacterium phosphoreum to give EC50 values after 5, 15 and 30 minutes. The toxicities of the leachates were widely different and in 4 cases a stimulation of bacterial activity was observed. For some extracts, toxicity decreased if the time of sedimentation increased, indicating that classical toxicity tests lasting 48 h could provide false results.
ISSN:0048-9697