Okoye N. O.'s research while affiliated with Federal University of Technology Minna and other places

... Recently, multivariate statistical analyses like principal component analysis(PCA), cluster analysis(CA) and water quality index analysis(WQI) has been successfully used in water quality assessment studies (David et al. 2020), using these methods, data generated can be simplified and organized to yield useful information for decision making. (Amadi 2011;Kaiser 1985;Mohammed et al. 2016). ...

... The surface water bodies are used for drinking, domestic and agricultural activities and the populace rely on natural resources as their major source of livelihood. According to Amadi et al. (2016), groundwater being an alternative to surface water has been highly exploited for human, industrial and agricultural purposes across the world including the study area, in order to meet the persistent increase in water demand. Water is essential for both natural and anthropogenic activities and it is the engine of most lives on earth, thus, it is necessary to mitigate activities that degrade water in order to improve quality (Ashun and Bansah, 2017). ...

... Hong Settlement lies between longitude 12°50 ʹ E to 13°00 ʹ E and latitude 10°05 ʹ N to 10°22 ʹ N, in Hong Local Government Area of Adamawa State, Northeastern Nigeria ( Figure 1). The area covers about 60 km 2 and is accessible through major and minor roads, within Adamawa highlands [12]. Zango lies between longitudes 8°26 ʹ E and 8°44 ʹ E and latitudes 12°50 ʹ N and 13°04 ʹ N, within Zango Local Government Area of Katsina State, Northwestern Nigeria ( Figure 1). ...

... Famous among these indices include; enrichment factor (EF), metal enrichment index (MEI), geo-accumulation index (Igeo), contamination factor (CF) and pollution load index (PLI) [6]. Reference values of these parameters are used to screen the potential for contaminants within sediment to induce biological effects and to compare sediment contaminant concentration with the corresponding quality guideline [1,10]. One of the most commonly used pollution index is the enrichment factor (EF); it determines whether sediment resident metals are naturally (from rocks) or anthropogenic sources [11]. ...

... The groundwater from the regolith aquifers in the area are acidic as the mean value of both dry and rainy seasons are below the WHO accepted permissible range of 6.50-8.50. Acidic condition enhances chemical weathering and dissolution of host rocks in the course of rock-water interaction as well as mobility of metals (Okunlola, Amadi, Onyemere, & Okoye, 2015). The pH concentration maps for dry and rainy seasons are shown in figure 4. for The electrical conductivity (EC) ranged between 10.86-800.50 µs/cm and an average value of 191.28 µs/cm during the dry season while in the rainy season, it ranged from 10.00-1420.00 ...

... Bicarbonate concentration which ranged from 30.50 mgL -1  122.30 mgL -1 with an average concentration value of 60.16 mgL -1 in dry season and 21.50 mgL -1 to 113.20 mgL -1 with a mean value of 56.03 mgL -1 in wet season were reported from shallow aquifers of Hung area of Adamawa Northeast, Nigeria [51]. Mean bicarbonate level of 195 mgL -1 were also reported in borehole samples of Yola-Jimeta metropolis [52]. ...

... The lower mean values of heavy metals recorded in the present study as compared to the higher mean values reported for agricultural soils along some highways in Hamedan, west of Iran [7], roadside agricultural soils from India [6] and in soils reported in studies conducted in Tarnaveni city of Romania, Birjand city of Iran, Western Rajasthan, Faisalabad, Suxian county south China, and Thrace region of Turkey, may likely be that some of the compared sites are heavy industrial areas and some are exposed to mining activities [33][34][35][36][37][38]. Various studies have shown that industrial activities contribute to pollution burden [39][40][41]. ...

... Within the study region, a concrete wall canal stretches through the Minna settlement and the whole Bosso Campus. The aquifer in the area is replenished by precipitation, resulting in increased discharge from boreholes that tap into regolith aquifers during the rainy season compared to the dry season (Amadi et al., 2013). ...

... This originated an enquiry into the earlier literatures on the geological mappings of the area. About half of the landmass of Niger State is underlain by the Basement Complex rocks while the remaining half is occupied by the Cretaceous Sedimentary rocks of the Bida Basin ( Figure 2) (Amadi et al., 2012). The study area lies within the northcentral part of the Nigerian Basement complex rock which is characterized by three lithofacies: the migmatite-gneiss complex, the low grade schist belt and the older granites (Amadi et al., 2012). ...

... The petrographic analysis of any given rock(s) sample aid in the classification of that particular rock sample. Most Geology, Geochemistry and Petrogenetic studies of the Precambrian Basement Rocks around the Southwestern Basement Complex were carried out by workers such as Akindele and Goki et al., (2011), Onimisi et al. (2013, Folorunso et al. (2013), Olatunji et al. (2013), Olusiji (2015), Ogunyele et al. (2018), Adegbuyi et al. (2018 and Gideon, (2019) on a regional scale. Akindele and Oyinloye, (2011) revealed that of all the tectonic episodes, the Eburnean and the Pan-African Orogeny are the major events which modified the study area and the Precambrian geology of Nigeria. ...