Accumulation of toxic metals in sediments and oligochaetes around urban uncontrolled landfills in Kinshasa, DR Congo

Key Points

• Toxic metal accumulation in sediments is significant, highlighting pollution risks in urban areas.
• The levels of nickel and lead in sediments were found to be particularly elevated, with substantial implications for local ecosystems.
• Assessment using sediment and biological sampling methods demonstrates the impact of urban uncontrolled landfills on the environment.
• These findings may enable better environmental management strategies in urban areas, particularly around landfill sites.