Levels of Persistent Organochlorine Compounds in Nile Tilapia ( Oreochromis niloticus ) from Three Cage Aquaculture Farms on the Volta Basin of Ghana: Implications for Human Health

Increased agrochemical-based agricultural activities along the Volta basin and cage aquaculture practices from the cage farms have raised concerns about the potential ecological risk to the aquatic ecosystem. To assess this, caged tilapia samples were analysed for polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCP). Fish samples in acetone/hexane (2:1v/v) solvent medium were sonicated in an ultrasonic bath, shaken electronically, cleaned by solid-phase extraction, and analysed using GC/ECD for OCPs and GC/MS for PCBs. The levels of OCPs reported in the fish ranged; ND – 2.31 µg/kg (fish farm A), 更多