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Short-term toxicity to fish

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Data from iron oxide - within 96 hours no effect (LC0) on Brachydanio rerio was observed up to a concentration of >= 50000 mg/l, and a 96-hour LC90 of ca. 100000 mg/l was obtained. Summary for short-term tox to fish for LEAD: For fish, 47 individual reliable acute toxicity data points for two different species were put forward for hazard assessment purposes. The acute toxicity values (96h-LC50) for Pimephales promelas varied between of 40.8 µg dissolved Pb/L (at pH 5.67 and hardness of 15.9 mg/L) and 3597.9 µg dissolved Pb/L (at pH 7.1 and hardness of 26 mg/L).The acute toxicity values (96h-LC50) for Oncorhynchus mykiss varied between of 107.0 µg dissolved Pb/L (at pH 8.8 and hardness of 290 mg/L) and 1170.0 µg dissolved Pb/L (at pH 6.9 and hardness of 32 mg/L).
For LEAD: For fish, 47 individual reliable acute toxicity data points for two different species were put forward for hazard assessment purposes. The acute toxicity values (96h-LC50) for Pimephales promelas varied between of 40.8 µg dissolved Pb/L (at pH 5.67 and hardness of 15.9 mg/L) and 3597.9 µg dissolved Pb/L (at pH 7.1 and hardness of 26 mg/L).The acute toxicity values (96h-LC50) for Oncorhynchus mykiss varied between of 107.0 µg dissolved Pb/L (at pH 8.8 and hardness of 290 mg/L) and 1170.0 µg dissolved Pb/L (at pH 6.9 and hardness of 32 mg/L).

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Data from iron oxide - within 96 hours no effect (LC0) on Brachydanio rerio was observed up to a concentration of >= 50000 mg/l, and a 96-hour LC90 of ca. 100000 mg/l was obtained. The method used was a proposed procedure for lethal effect on Zebrabaerbling. (Federal Environmental Agency Germany May 1984), (Bayer AG 1989). Summary for short-term tox to fish for LEAD: For fish, 47 individual reliable acute toxicity data points for two different species were put forward for hazard assessment purposes. The acute toxicity values (96h-LC50) for Pimephales promelas varied between of 40.8 µg dissolved Pb/L (at pH 5.67 and hardness of 15.9 mg/L) and 3597.9 µg dissolved Pb/L (at pH 7.1 and hardness of 26 mg/L).The acute toxicity values (96h-LC50) for Oncorhynchus mykiss varied between of 107.0 µg dissolved Pb/L (at pH 8.8 and hardness of 290 mg/L) and 1170.0 µg dissolved Pb/L (at pH 6.9 and hardness of 32 mg/L).

Acute bioassays (96 h) with Pb were performed on rainbow trout in both hard and soft waters. The LC50s were determined using log-probit analysis (Sprague, 1969). The LC50 was 1170 µg/L (32 mg/L hardness and pH 6.85), 107 µg/L (385 mg/L hardness and pH 8.15) and 107 µg/L (290 mg/L hardness and pH 6.78).

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