NEMATODE TEST TO ESTIMATE THE HAZARD POTENTIAL OF SOLVED CONTAMINATIONS

The acute toxicity of lindane, pentachlorophenol and a fluortenside wa s examined using a recently developed ecotoxicity test with the terres trial nematode species Panagrellus redivivus. The exposure was perform ed in aqueous solution over an investigation period of 96 h. For linda ne a time dependent decrease of the survival rate (LC50 after 96 h: 0. 4 mg/l) was observed which indicates a high cuticular permeability of the insecticide. For pentachlorophenol the LC50 (96 h) was 13 mg/l, fo r the fluortenside a value of 110 mg/l was determined.