Assessment of Organochlorine (OC) Pesticides Residues in Sediment, Soil, and Fish Samples from River Owan, Edo State, Nigeria

Abstract

In this study, sixteen (16) organochlorine (OC) pesticides in sediment, soil and fish (Clarias anguillaris) samples of River Owan, Edo State, Southern Nigeria were investigated in accordance with acceptable analytical methods. Our findings confirmed the presence of the 16 OCPs in different concentration values in soil, sediment, and fish (Clarias anguillaris). The ∑OCP in the sediments samples were between 0.0033-0.0319 (ng g^-1) with total value of 0.1506 (ng g^-1) for the sediment sample 1 (SE1); 0.0021-0.0587(ng g^-1) with total value of 0.0291(ng g^-1) for the sediment sample 2 (SE2). The level of the OCPs in the soil ranged between 0.0069-0.0626 (ng g^-1), total concentrations of 0.3986(ng g^-1) for soil sample 1 (SO1); 0.0026-0.0630 (ng g^-1), total concentration of 0.3678 (ng g^-1) for soil sample 2 (SO2). The concentration level of the OC pesticides were between 0.0046-0.1707 (ng g^-1) in the fish sample with total concentration of 0.1490 (ng g^-1). These pesticides were found in higher concentrations in soil than in sediment samples. The level of OC pesticide residues detected in the fish was greater than the sediment samples. The hazard quotient is moderate (1.49) when compared with the guidelines.