2. ENVIRONMENTAL ChEMISTRy & TEChNOLOGy 2.1. Lectures
2. ENVIRONMENTAL ChEMISTRy & TEChNOLOGy 2.1. Lectures
2. ENVIRONMENTAL ChEMISTRy & TEChNOLOGy 2.1. Lectures
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Chem. Listy, 102, s265–s1311 (2008) Environmental Chemistry & Technology<br />
tion of ecotoxicological parameters. Calculated values from<br />
probit model and experimental values were in very good correlation<br />
with declared value of tests.<br />
Table II<br />
The ecotoxicity of K 2 CrO 4 (n = 9; concentration in mg dm –3 )<br />
Daphtoxkit F Thamnotoxkit Lemma<br />
EC50/ EC50/ F minor<br />
24 h 48 h LC50/24 h IC50/168 h<br />
Declared<br />
values<br />
1.03 0.75 0.10 –<br />
Experim.<br />
value<br />
0.99 0.79 0.092 20.52<br />
Probit<br />
model<br />
0.96 0.69 0.093 –<br />
Median 0.99 0.75 0.093 20.00<br />
s 0.0286 0.0411 0.0035 0.5200<br />
Conclusions<br />
The ecotoxicity of the tested chemical was confirmed by<br />
the application of ecotoxicological tests. In the majority of<br />
cases, on the base of the obtained results of the study tests with<br />
chemical, the tests perform very suitable way for the study of<br />
ecotoxicity and can be used for evaluation of ecotoxicity of<br />
other chemicals and wastes. This study confirmed declared<br />
value and all data were statistical evaluated in detail, and the<br />
sensitivity of testing organism was also confirmed.<br />
This work has been supported by Project No. MSM<br />
002163050 form the Ministry of Education, Youth and Sports<br />
of the Czech Republic, and from the COST ACTION 636 Project<br />
No. OC 183.<br />
s360<br />
REFEREnCES<br />
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167 (2002).<br />
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45, 659 (2001).<br />
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CHEM (98)18.<br />
5. OECD Environmental health and Safety Publications:<br />
OECD Guidelines for Testing Chemicals no 201 (2006,<br />
2004, 1992)<br />
6. ISO 8692:2004: Water quality – Freshwater algal<br />
growth inhibition test with unicellular green algae<br />
7. ISO 6341:1996: Water quality – Determination of the<br />
inhibition of the mobility of Daphnia magna Straus<br />
(Cladocera, Crustacea) – Acute toxicity test<br />
8. ISO 20079:2005: Water quality – Determination of the<br />
toxic effect of water constituents and waste water on<br />
duckweed (Lemna minor) – Duckweed growth inhibition<br />
test<br />
9. Commission of the European Communities, 1996. Technical<br />
guidance document in support of commission<br />
directive 93/67/EEC on risk assessment for new notified<br />
substances and commission regulation (EC) No 1488/94<br />
on risk assessment for existing substances. Part II;<br />
Environmental Risk Assessment. Office for official publications<br />
of the European Communities, Luxembourg.