Normal value in fresh water 1 mg/l Normal value in marine water 0,1 mg/l Normal value for fresh water sediment 4 mg/kg Normal value for marine water sediment 0,4 mg/kg Normal value for water, intermittent release 3,9 mg/l Normal value of STP microorganisms 200 mg/l Normal value for the food chain (secondary poisoning) 56 mg/kg Normal value for the terrestrial compartment 0,4 mg/kg