Pollution Risk Assessment of the Soil Near the Quarries in Ogun State, Nigeria

Abstract Quarry is a mining industry through which construction materials are extracted. The investigation is on the pollution risk assessment of the nearby soil of the quarries in Ogun State, Nigeria. Topsoil and subsoil (Forty - Eight) samples were collected from ADE, BAA, OGB, IDO, IGO, ILA, ISA, and IWA (dry and wet seasons) and analysed for K, Mg, Si, As, Se, Ni, and Pb using standard procedures. Pollution level was assessed using the following indices; Pollution (PI), Ecological risk (ERI), and Geo-accumulation (Igeo). Topsoil (west season); all locations were very highly polluted with Mg, and IGO (very highly) polluted with Si and K. Subsoils (west season); BAA and IGO (Mg), ILA and IGO (Si), and ISA and BAA (K) were very highly polluted. Topsoil (wet season) ILA and BAA (As), and OGB, ISA, ILA, BAA, and IGO (Ni) were very highly polluted. In the subsoil (dry season), all locations were very highly polluted with As and Se. In subsoil (dry season); IDO (Pb), and ADE and BAA (As) had very high ecological risk (ER); Igodo had high ER of Pb. Topsoil Igeo (wet season); Mg in all locations (strongly - very strongly) polluted, ILA and IGO (Si), IWA, IDO, ILA, ADE, and IGO (K) were very strongly polluted. Subsoil Igeo (wet season) ILA and IGO (Si), and BAA and ISA (K) were very strongly polluted. Topsoil Igeo (wet season); OGB, ISA, ILA, BAA, and IGO (Ni) were very strongly polluted. Surrounding soils (polluted).