The use of multivariate statistical analysis in the assessment of groundwater hydrochemistry in some parts of southwestern Nigeria

Fatoba, Julius O.; Sanuade, Oluseun Adetola; Hammed, O.S.; Igboama, Wilfred W.

doi:10.1007/s12517-017-3125-7

Cited by 22 publications

(18 citation statements)

References 32 publications

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“…A multivariate statistical technique known as Hierarchical Cluster Analysis (HCA) was adopted to classify the thirteen ( 13) variables of all the ten (10) occupied stations in this study into categories based on their similarities and to produce dendrogram (Figure 11). A dendrogram is a tree-structured graph that enables one to view the output of calculations from HCA (Fatoba et al, 2017). The output of HCA is usually represented as the distance between the clustered columns or rows based on the description of each measured parameter.…”

Section: Kurtosis = (11)mentioning

confidence: 99%

“…( 12) where D Link is the quotient between the linkage distances for certain case, D Max is the maximal linkage distance. The constant in the equation (that is, 100) is used to standardize the linkage distance (Wunderlin et al, 2001;Fatoba et al, 2017). The linkage distance among the variables was estimated using squared Euclidean distance, and the Ward's method was employed for the clustering technique.…”

Section: Kurtosis = (11)mentioning

confidence: 99%

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Statistical Assessment of Radiation Exposure Risks of Farmers’ in Odo Oba, Southwestern Nigeria

Adagunodo

Sunmonu

Adabanija

et al. 2018

Bulletin of the Mineral Research and Exploration

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The toxicity risks of being over exposed to ionizing radiation in the environments are of great concern to environmental and health scientists. The distribution of radioactivity concentrations of thorium, uranium and potassium were studied in randomly selected soil samples from ten (10) farm locations in Odo Oba, southwestern Nigeria in order to determine the radiological risks of farmers' exposure to radionuclides. The mean estimation of thorium and potassium are greater than the global average by factors of 1,5 and 2,7, while that of uranium fall below the global average. The estimation of radioactivity ratios showed a depletion of uranium and enrichment of thorium in the study area. Further analysis on the radioelements (that is, thorium, uranium and potassium) showed that 83% of the estimated radiological risks are above the global average. The multivariate analyses involving Pearson's correlation, Factor Analysis, Hierarchical Cluster Analysis were also used to explain the correlations among the data sets. It was affi rmed from the multivariate analysis that the radiological hazards occur as a result of contributions from the three naturally occurring radionuclides. The values obtained in this study revealed that the sampled locations are contaminated zones for farmers.

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Section: Kurtosis = (11)mentioning

confidence: 99%

Section: Kurtosis = (11)mentioning

confidence: 99%

Statistical Assessment of Radiation Exposure Risks of Farmers’ in Odo Oba, Southwestern Nigeria

Adagunodo

Sunmonu

Adabanija

et al. 2018

Bulletin of the Mineral Research and Exploration

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“…Subsurface aquifers comprise of porous rocks that are capable of storing water for household and industrial use. The productivity of an aquifer unit depends on factors such as its depth, thickness, resistivity, and petrophysical properties like fluid saturation, mineral content, porosity, permeability, and groundwater contamination (Meju et al, 1999;Karlık and Kaya, 2001;Kaya et al, 2007;Balkaya et al, 2009; Fatoba et al, 2017;Olaojo et al, 2018;Oyeyemi et al, 2018a;, 2018c. The complexity of subsurface geology necessitates the applications of geophysical methods to avoid drilling an unproductive borehole during groundwater exploration, development, and management.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the groundwater potential of coastal aquifer using geoelectrical resistivity survey and porosity estimation: A case in Ota, SW Nigeria

Oyeyemi

Aizebeokhai

Metwaly³

et al. 2021

Groundwater for Sustainable Development

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Geoelectrical resistivity sounding surveys was carried out at two locations (A and B) in the new CanaanCity residential estate of Canaan land Ota, Ogun state in order to locate possible targets for groundwater explorations. A total of twelve (12) vertical electrical soundings were conducted using the Schlumberger array configuration. The interpretations of the VES curves revealed five to six geoelectrical layers at location A which comprises VES1-7. The geoelectric units consist of the topsoil, sandy clay, lateritic clay, confining bed (clayey sand), and main aquifer (sand). The top of the aquifer in this part of the study area is between 40 m and 83.5 m. Likewise, a total of five to seven layers of geoelectrical units were delineated at the location B portion of the study site (VES 8-12) similar to location A with an addition of the shale unit that was interpreted to be that of the Akimbo Formation of the Dahomey Basin. The depth to the top of the productive aquifer within location B is in the range of 40-112.4 m. The delineated basal shale layer is impermeable, serving as the base seal rock for the confined aquifer system. The estimated porosity values range from 28% to 74%, indicating that the highly porous aquifer system in the area is the coastal plain sands mixed with the alluvium sand of the Benin Formation of Dahomey Basin. The study revealed the complexity of the productive aquifer system in the area and its undulating topography.

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“…Groundwater, a naturally occurring vital resource is overexploited nowadays in many parts of the world to meet the growing human demand for drinking, agriculture, urban, and industrial purposes (Deepa and Venkateswaran 2018;Mahammad and Islam 2021). Groundwater is a purer form of water as it is always clear, colourless, and odorless and maintains a relatively constant temperature compared to surface water (Fatoba et al 2017). Therefore, two/third of the world's population uses groundwater alone to meet their necessary demands (Adimalla and Taroor 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the groundwater quality of Damodar Fan Delta (India) using fuzzy-AHP MCDM technique

Mahammad

Islam

2021

Appl Water Sci

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In recent years, groundwater pollution has become increasingly a serious environmental problem throughout the world due to increasing dependency on it for various purposes. The Damodar Fan Delta is one of the agriculture-dominated areas in West Bengal especially for rice cultivation and it has a serious constraint regarding groundwater quantity and quality. The present study aims to evaluate the groundwater quality parameters and spatial variation of groundwater quality index (GWQI) for 2019 using the fuzzy analytic hierarchy process (FAHP) method. The 12 water quality parameters such as pH, TDS, iron (Fe−) and fluoride (F−), major anions (SO42−, Cl−, NO3−, and HCO3−), and cations (Na+, Ca2+, Mg2+, and K+) for the 29 sample wells of the study area were used for constructing the GWQI. This study used the FAHP method to define the weights of the different parameters for the GWQI. The results reveal that the bicarbonate content of 51% of sample wells exceeds the acceptable limit of drinking water, which is maximum in the study area. Furthermore, higher concentrations of TDS, pH, fluoride, chloride, calcium, magnesium, and sodium are found in few locations while nitrate and sulfate contents of all sample wells fall under the acceptable limits. The result shows that 13.79% of the samples are excellent, 68.97% of the samples are very good, 13.79% of the samples are poor, and 3.45% of the samples are very poor for drinking purposes. Moreover, it is observed that very poor quality water samples are located in the eastern part and the poor water wells are located in the northwestern and eastern part while excellent water quality wells are located in the western and central part of the study area. The understanding of the groundwater quality can help the policymakers for the proper management of water resources in the study area.

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The use of multivariate statistical analysis in the assessment of groundwater hydrochemistry in some parts of southwestern Nigeria

Cited by 22 publications

References 32 publications

Statistical Assessment of Radiation Exposure Risks of Farmers’ in Odo Oba, Southwestern Nigeria

Statistical Assessment of Radiation Exposure Risks of Farmers’ in Odo Oba, Southwestern Nigeria

Evaluating the groundwater potential of coastal aquifer using geoelectrical resistivity survey and porosity estimation: A case in Ota, SW Nigeria

Evaluating the groundwater quality of Damodar Fan Delta (India) using fuzzy-AHP MCDM technique

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