Orange lead

Short-term toxicity to aquatic invertebrates

Description of key information

 

For freshwater invertebrates, 44 individual reliable acute toxicity data points for two different species were put forward for hazard assessment purposes. The acute toxicity values (48h-LC₅₀) for Ceriodaphnia dubia varied between 26.4 µg dissolved Pb/L (at pH 8.1 and hardness of 25 mg/L as CaCO₃) and 3115.8 µg dissolved Pb/L (at pH 8.15 and hardness of 103.2 mg/L as CaCO₃).The acute toxicity values (48h-LC₅₀) for Daphnia magna were situated between 280 µg dissolved Pb/L (at pH 7.5 and hardness of 72 mg/L as CaCO₃) and 364.5 µg dissolved Pb/L (at pH 7.6 and hardness of 54 mg/L as CaCO₃).