Assessment of the Health Risk, Aesthetic and Agricultural Quality of Rainwater, Surface Water and Groundwater in the Shale Bedrock Areas, Southeastern Nigeria

Nganje, T. N.; Hursthouse, Andrew; Edet, Aniekan; Stirling, David I.; Adamu, Christopher Iorfa

doi:10.1007/s12403-014-0136-4

Cited by 24 publications

(12 citation statements)

References 35 publications

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“…The variation in EC is attributed to the different levels of enrichment in depositional environment during accumulation (Rimmer 2004). See Nganje et al (2014). Sample locations are in Fig.…”

Section: Physical Parametersmentioning

confidence: 99%

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Hydrochemistry of surface water and groundwater in the shale bedrock, Cross River Basin and Niger Delta Region, Nigeria

et al. 2015

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Water chemistry in the shale bedrock of the Cretaceous-Tertiary of the Cross River and Niger Delta hydrological basins has been investigated using major ions. To carry out a characterization of the water bearing units, 30 and 16 representatives surface and groundwater samples were collected. The evolution of the water is characterized by enhanced content of sodium, calcium and sulphate as a result of leaching of shale rock. The spatial changes in groundwater quality of the area shows an anomalous concentrations of ions in the central parts, while lower values characterize the eastern part of the basin covering Ogoja, Ikom and Odukpani areas. The values of total dissolved solids (TDS) and ions increases down gradient in the direction of groundwater flow. The dissolution of halite and gypsum explains part of the contained Na ? , Ca 2? , Cl -and SO 4 2-, but other processes such as ion exchange, silicate weathering and pyrite oxidation also contribute to water composition. The assessment with contamination indicators such as TDS, hardness, chloride, nitrate and sulphate indicates that the water in area is suitable for human consumption in some locations. Modelling using MINTEQA2 program shows that the water from all the shale water bearing units are under saturated with respect to gypsum.

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Section: Physical Parametersmentioning

confidence: 99%

“…Sample locations are in Fig. 6 nd not determined, BDL below detectable limit Appl Water Sci (2017) See Nganje et al (2014). Empty spaces no data Sample locations are in Fig.…”

Section: Physical Parametersmentioning

confidence: 99%

Hydrochemistry of surface water and groundwater in the shale bedrock, Cross River Basin and Niger Delta Region, Nigeria

et al. 2015

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“…plasma membrane) (Worms et al., 2008), thus, our study made use of dissolved concentrations of these elements to estimate their human health impact. Although several water studies have been conducted in Nigeria in recent years (Omaka et al., 2014, 2016, 2017; Adamu et al., 2015; Igwe et al., 2015; Nganje et al., 2015), spring waters, mainly used by majority of the rural populace have never received attention regarding their quality. To our knowledge, no comprehensive data are available on PTEs (especially Hg) levels in springs, streams, boreholes and hand-dug wells in the rural and most urban areas of southeastern region of Nigeria.…”

Section: Introductionmentioning

confidence: 99%

Multivariate statistical approach and water quality assessment of natural springs and other drinking water sources in Southeastern Nigeria

Nnorom

Ewuzie

Eze

2019

Heliyon

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This baseline study investigated the physico-chemical and trace elements (including potentially toxic elements, PTEs) contents of ground and surface water sources used for domestic purposes in some districts within the shale bedrock terrain of Southeastern Nigeria. A total of 124 water samples from 13 natural springs, 24 streams, 80 boreholes and 7 hand-dug wells were collected from rural and urban areas and analysed by ICP-OES, GF-AAS and CV-AFS for 21 elements. The distribution pattern, sources of contamination, health risk of potentially toxic elements (PTEs), together with water quality index were investigated. The results were compared with national and international guidelines for drinking water. Al and Fe were implicated as the dominant pollutants in the water bodies. Water quality index (WQI) indicated that all the water sources had either excellent or good water quality (WQ) with the exception of a borehole, which had poor WQ. Different multivariate statistical approaches applied to evaluate the origins of the elements in the water bodies identified six source types that accounted for 70.88% of the total variance. Anthropogenic activities were considered to contribute much of Cu, Pb, Cd, Cr, Li and P, while Al, As, Co, Fe, Se, Ni, Y and V were likely from crustal materials, minerals and ores, and natural environments. Both anthropogenic and natural sources accounted for the Hg, Mn and Zn. Cluster analysis (CA) was adopted to classify 124 sample points into two groups of water pollution, reflecting influences from crustal materials and anthropogenic sources. From the result of hazard quotient and index (HQ/HI), there is little or no health risks arising from PTEs in using water from the region.

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“…To gain a more comprehensive understanding of specific hazards of individual VOC, Rowe et al (2007) have selected candidate VOCs involving multiple criteria, including potential human cancer risks and non-cancer hazards, toxicity to and bioconcentration in aquatic organisms, physical properties and occurrence statistics, use or potential use, and so on. After that, related studies are focusing on ecological and human health risk assessments to evaluate the likelihood of adverse effects as a result of exposure to environmental contaminants (Du et al, 2013;Gao et al, 2012;Yang et al, 2014), especially the risks of natural water (Nganje et al, 2015;Zhu et al, 2015). What's more, concerns on taste and odor problems have been dramatically increased (Chen et al, 2013a,b;Sun et al, 2012Sun et al, , 2014Yu et al, 2009) since the water crisis in Wuxi, China in 2007 (Guo, 2007;Yang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous assessments of occurrence, ecological, human health, and organoleptic hazards for 77 VOCs in typical drinking water sources from 5 major river basins, China

Chen

Luo

Wang

et al. 2015

Environmental Pollution

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Ecological risk assessment Human health risk assessment Taste and odor a b s t r a c tOwing to the growing public awareness on the safety and aesthetics in water sources, more attention has been given to the adverse effects of volatile organic compounds (VOCs) on aquatic organisms and human beings. In this study, 77 target VOCs (including 54 common VOCs, 13 carbonyl compounds, and 10 taste and odor compounds) were detected in typical drinking water sources from 5 major river basins (the Yangtze, the Huaihe, the Yellow, the Haihe and the Liaohe River basins) and their occurrences were characterized. The ecological, human health, and olfactory assessments were performed to assess the major hazards in source water. The investigation showed that there existed potential ecological risks (1.30 Â 10 RQ total s 8.99 Â 10) but little human health risks (6.84 Â 10 À7 RQ total s 4.24 Â 10 À4 ) by VOCs, while that odor problems occurred extensively. The priority contaminants in drinking water sources of China were also listed based on the present assessment criteria.

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Assessment of the Health Risk, Aesthetic and Agricultural Quality of Rainwater, Surface Water and Groundwater in the Shale Bedrock Areas, Southeastern Nigeria

Cited by 24 publications

References 35 publications

Hydrochemistry of surface water and groundwater in the shale bedrock, Cross River Basin and Niger Delta Region, Nigeria

Hydrochemistry of surface water and groundwater in the shale bedrock, Cross River Basin and Niger Delta Region, Nigeria

Multivariate statistical approach and water quality assessment of natural springs and other drinking water sources in Southeastern Nigeria

Simultaneous assessments of occurrence, ecological, human health, and organoleptic hazards for 77 VOCs in typical drinking water sources from 5 major river basins, China

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