M. Lyytikainen et al., Toxicity of freshwater sediments in the vicinity of an old sawmill: Application of three bioassays, ARCH ENV C, 40(3), 2001, pp. 318-326
Citations number
47
Categorie Soggetti
Environment/Ecology,"Pharmacology & Toxicology
Journal title
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Toxicity of contaminated sediments collected from an old sawmill area and t
he downstream river-lake system was assessed with three different bioassays
. Survival and growth were Used as endpoints in subchronic (10-day) test wi
th Chironomus riparius and growth and reproduction in long-term (28-day) te
st with Lumbriculus variegatus. A microbial bioluminescent direct contact a
ssay, the Flash test, was also included in the test set to measure acute to
xicity. In every bioassay, sediment from a pool of the sawmill was found to
be toxic, and some adverse effects were found in other sediments as well.
The bioassays were then compared to chemical analysis results, which showed
the presence of several toxicants. These results could not, however, be di
rectly connected to any individual toxicant, nor did they show any obvious
trend downstream from the mill.