Heavy metal inputs from petrochemical industries, fertiliser plants, oil and gas operations, and intensive farming increasingly impact agricultural soils in industrialised parts of the Niger Delta. These metals persist in soils, influence soil quality, and pose ecological and hum...
Open access
Research Article10.9734/ajahr/2026/v13i1436
Ogbaji Henderson O., Akpan Nsima A., Ijioma Chinonye C., Okpoji Awajiiroijana U., Eze Victor C., U., Obi Justina N., Martins Ndidi P. & Etesin Monday U.·Asian Journal of Geographical Research·2025
This study examined the seasonal variation in hydrocarbon contamination of sediments and biota within the Bonny Estuary, Rivers State, Nigeria. Samples of sediment, surface water, and fish were collected during the dry and wet seasons and analysed for total petroleum hydrocarbons...
Open access
Research Article10.9734/ajgr/2025/v8i4341
Ekesiobi Sandra U., Thompson Nwinam I., Akpan Nsima A., Okeke Nkeiruka P., Ohaturuonye Sampson O., Okabekwe Veraline C., Dare Blessing E. & Okpoji Awajiiroijana U.·Asian Journal of Chemical Sciences·2026
Urban water resources in the Niger Delta are increasingly impacted by rapid urbanisation, inadequate waste management, and diffuse anthropogenic inputs. This study evaluated the integrated physicochemical quality and non-carcinogenic human health risks associated with domestic wa...
Open access
Research Article10.9734/ajocs/2026/v16i1423
Izuchukwu Emeka C., Etukudo Nsikan J., Akpan Nsima A., Igwegbe Kelvin C., Edodi, Iyam O., Okpoji Awajiiroijana U. & Etesin Monday U.·Asian Journal of Geographical Research·2026
Groundwater from boreholes is the primary source of drinking water for many urban communities in the Niger Delta region of Nigeria. Rapid urbanisation, industrial activities, petroleum-related operations, and poor sanitation infrastructure have increased the vulnerability of grou...
Open access
Research Article10.9734/ajgr/2026/v9i1359
Ohaturuonye Sampson O., Okpoji Awajiiroijana U., Akpan Nsima A., Njoku Chukwunonso A., Isaac Stanley C., Etesin Monday U. & Ekwere Ifiok O.·Asian Journal of Research in Zoology·2025
Aquatic organisms inhabiting petroleum-impacted estuaries of the Niger Delta are frequently exposed to complex mixtures of heavy metals and hydrocarbons capable of inducing biochemical and physiological stress. This study evaluated the concentrations of Pb, Cd, Hg, As, Cr, and to...
Open access
Research Article10.9734/ajriz/2025/v8i4233
Umueni Uchenna E., Ogbaji Henderson O., Okpoji Awajiiroijana U., Osuagwu Eze L., Akpan Nsima A., Ekpe John E., Okabekwe Veraline C., Anumaka Collins C., Obiefuna Grace C. & Warder Amaminor B.·Asian Journal of Geological Research·2026
Rivers in the Niger Delta deliver vital ecological and economic benefits but face increasing pressures from human activities that disrupt hydrology and harm sediment quality. This research assessed the hydrological features, sediment condition, and ecological risks of the Orashi...
Open access
Research Article10.9734/ajoger/2026/v9i1230
Onuchukwu Ejikeme E., Omuluche Collins O., Usiabulu Godsday I., Okpoji Awajiiroijana U., Cookey Cookey I., Akpan Nsima A., Fabis Manasseh & Anumaka Collins C.·Asian Journal of Chemical Sciences·2026
Background: Produced water is the largest waste stream generated during petroleum exploration and production and may contain chemical constituents that can cause adverse environmental impacts if inadequately managed. Aim: This study comparatively characterised the chemical compos...
Open access
Research Article10.9734/ajocs/2026/v16i5469