The Fisheries Department continues to conduct ‘ad-hoc’ sampling of fish species for pesticide residues. These are usually in response to specific requests. For example, five species in fish (24 specimens) were sampled in Wilson’s Inlet near Denmark in 1988. Unexpected residues of chlorpyrifos were found in 11 of the samples ranging from 0.01mg/kg (the limit of detection) to 0.18mg/kg.
P43 Monitoring Pesticides – A Review – A Report to the Environmental Protection Authority by Peter A Rutherford. Environment Protection Authority. Perth Western Australia. Bulletin 407. December 1989.