report no. 7/13

21 Jul 2013

This report describes the experimental procedures and the results obtained in acuteand chronic ecotoxicity tests as well as a biodegradation study on cracked gas oilsamples. In a CONCAWE study, three samples were tested for toxicity to thecrustacean zooplankter, Daphnia magna and the algae, Pseudokirchneriellasubcapitata (alternatively known as Selenastrum capricornutum) using wateraccommodated fractions. In addition, another sample was tested in a separate APIstudy for toxicity to the fish, Oncorhynchus mykiss, the crustacean zooplankter,Daphnia magna (acute and chronic) and the algae, Pseudokirchneriella subcapitatausing water accommodated fractions. The API sample was also tested for readybiodegradability in a manometric respirometry test. All these results assist indetermining the environmental hazard posed by cracked gas oils.