Cancer risk assessment of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in former agricultural soils of Hong Kong

► Electronic recycling site contain high concentrations of PCBs and PBDEs in Hong Kong. ► Changing of agricultural land use to electronic waste recycling sites can increase potential cancer risk on human. ► High levels of soil organic matter in soils render PBDEs and PCBs more resistant to degradation.