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Table 10 Cumulative immobilisation data in definitive Daphnia test

From: Initial in vitro screening approach to investigate the potential health and environmental hazards of Envirox™ – a nanoparticulate cerium oxide diesel fuel additive

Nominal concentration (% v/v saturated solution) Cumulative immobilised Daphnia (initial population: 10 per replicate)
  24-hour 48-hour
  Number per replicate Total % Number per replicate Total %
Control:         
R1 0    0   
R2 0 0 0 0 0 0
R3 0    0   
R4 0    0   
100% Nano cerium oxide:         
R1 0    0   
R2 0 0 0 0 0 0
R3 0    0   
R4 0    0   
100% Non nano cerium oxide:         
R1 0    0   
R2 0 0 0 0 0 0
R3 0    0   
R4 0    0   
  R1 R2    R1 R2   
Positive control (mg/l) (potassium dichromate):         
0.32 0 0 0 0 0 0 0 0
0.56 0 0 0 0 0 0 0 0
1.0 2 4 6 30 10 10 20 100
  1. R1 – R4 = Replicates 1 to 4