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Heavy metals are shown to be a major indoor dusts pollutant. The health risk assessment of Heavy metal contents of dusts collected from classroom corners of some randomly selected public primary schools in Rivers state was carried out. Dust samples from Classroom corners of three (3) Public primary Schools in Obio/Akpor, Eleme, and Ikwerre Local Government Areas (LGAs) was collected and analyzed for Lead (Pb), Cadmium (Cd), Chromium (Cr), and Arsernic (As) using Atomic Absorption Spectrophotometer (AAS, GF, Flame HVG). The heavy metal concentrations obtained from the analysis revealed that mean maximum level for Pb and Cd were obtained from E at 25.39±0.09 and 3.52±0.23 mg kg-1 respectively, while that of Cr and As were obtained from H at 45.24±0.02 and 1.53±0.06 mg kg-1. The minimum levels were observed at E. The Average daily intake Dose (ADDingestion, dermal and inhalation) and corresponding Target Hazard Quotients obtained revealed oral ingestion as major exposure pathway, though with no evidence for non carcinogenic risk/Hazard index (HI), but with children population being more exposed to Life cancer Risks (TLCR) except at F. It is however recommended that same risk assessment be made on agricultural products harvested from Primary School Farms and Borehole water within these regions.

Heavy Metals Contents and Health Risk Assessment of Classroom Corner Dusts in Selected Public Primary Schools in Rivers State, Nigeria