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Short-term toxicity to fish

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Description of key information

Ashes (residues), coal did not show any toxic effect highest tested loading and is not harmful to fish.

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Acute toxicity of a ashes (residues), coal (SiO2 42%) to fish was tested in a GLP-study according to OECD TG 203. A limit test with a loading rate of 100 mg/L was performed on Poecilia reticulata. After 96 h of exposure no mortality was observed. Based on this loading rate a NOELR of 100 mg/L (nominal value) was determined. As no mortality could be observed the LL50 is defined to be > 100 mg/L (ČEZ Energetické produkty, a. s.,2008).

This result is supported by studies of Vazelle (1993), who tested the acute toxicity of leachates obtained from ashes according to the French NFT 90-303 testing guideline, which in principle is similar to the EU Method C.1 (Acute Toxicity for Fish). Undiluted leachates resulted in no mortality on the test species Danio rerio; thus the leachates were determined as not acutely harmful to fish. In conclusion ashes(residues), coal showed no toxicity in the range of water solubility.