| assessment of toxicity hazards of dredged lake sediment contaminated by creosote. | in order to predict the potential toxicity hazards of sediment remediation by dredging, an experimental laboratory simulation was made by investigating seven ratios of creosote-contaminated sediment (lake jämsänvesi, central finland) and artificial lake water mixtures. sediment was suspended in water at the ratios of 1:1, 1:2, 1:4, 1:8, 1:16, 1:32, 1:64, 1:128 v/v. the elutriates were analysed for the acute toxicity by photoluminescence bacterial and waterflea (daphnia magna straus) tests. the c ... | 1999 | 10635593 |
| the toxicity and concentrations of pahs in creosote-contaminated lake sediment. | sediment samples, divided into three layers (0-10, 10-20 and 20-30 cm), were collected from 16 sites in lake jämsänvesi, central finland. the acute toxicity of pore waters and elutriates (sediment + water 1:4 v/v) were studied by bioluminescence inhibition test and by immobilisation of water fleas (daphnia magna straus). concentrations of polycyclic aromatic hydrocarbons (pahs) in sediments and elutriates were measured by gas chromatography using flame ionization detection (gc/fid). the highest ... | 1999 | 10028662 |