Classification and Health Risk Assessment for Borehole Water Contaminated by Metals in Selected Households in Southwest Nigeria

Adeniyi, A. A.; Yusuf, Kafeelah; Okedeyi, O. O.; Sowemimo, Mutiu

doi:10.4236/jwarp.2016.84039

Cited by 10 publications

(7 citation statements)

References 23 publications

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“…The t-test statistical analyses (Table 5) of pH and metal values obtained for water and sediments in the 2016 and 2018 sampling cycles revealed statistically non-significant differences. This is a pointer to the fact that the sources of pollution are unaltered [33]. Nevertheless, the calculated F-statistic, using analysis of variance (ANOVA) ( Table 6 and Table 7) for the samples reveal statistically significant differences in the water samples for, copper, nickel and zinc (2016) and for zinc (2018).…”

Section: Discussionmentioning

confidence: 98%

“…The samples were transported from the field to the laboratory for analysis. The samples were kept at 5˚C in the refrigerator until they were analyzed at the laboratory [33].…”

Section: Methodsmentioning

confidence: 99%

“…The samples were prepared for metal analysis using acid digestion as described earlier [27] [33]. Five heavy metals-cadmium, copper, nickel, lead and zinc were determined in an air-acetylene flame (Atomic Absorption Spectrophotometer (AAS) Model: Buck 210 VGP).…”

Section: Methodsmentioning

confidence: 99%

“…Whereas, the potential pollutant sources are direct disposal of domestic and agricultural wastes, runoffs and vehicular traffic emissions [29] [30] [31]. Other possible non-point pollution sources are the Agbara industrial estate [32] and accidental leakages from petroleum storage facilities and pipelines [33].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quantification of Metal Contaminants and Risk Assessment in Some Urban Watersheds

Adeniyi¹,

Okedeyi²,

Sowemimo³

et al. 2020

JWARP

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Contamination by heavy metals is a serious threat to aquatic systems due to their level of toxicity at elevated levels. The pollution of urban watersheds is of particular concern because of its potential impact on the watershed ecosystem and the receiving larger water bodies. This study assessed the occurrence and distribution of cadmium, copper, nickel, lead and zinc in water and sediment samples collected from three urban watersheds in Lagos, Nigeria. The concentrations of metals were determined using atomic absorption spectrometry. The health risk index (HRI) of water usage was evaluated for both adults and children. HRI for cadmium and lead in some of the watersheds recorded HRI > 1 values, a cause for health concern. The pH of water ranged from 6.48 ± 0.28-6.54 ± 0.47 (2016) and 6.18 ± 0.56-6.53 ± 0.17 (2018) respectively while, for sediments, the pH values ranged from 6.14 ± 0.48-6.9 ± 0.15 and 5.38 ± 0.22-6.4 ± 0.38 for 2016 and 2018 respectively. The levels of metals in the water samples during the 2016 sampling cycle were found to be within the World Health Organization (WHO) guideline limits for drinking water. However, the 2018 cadmium, lead and zinc concentrations for Ira-Ipaye and Akesan watersheds exceed the WHO guideline limits. Cadmium was not detected in Ira-Ipaye and Akesan 2016 sediment samples. Statistical t-test and analysis of variance (ANOVA) were used to ascertain significant differences of metals concentration in the three watersheds. The pH and metal concentration values obtained for water and sediment for the year 2016 and 2018 were non-significantly different.

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Section: Discussionmentioning

confidence: 98%

“…The samples were transported from the field to the laboratory for analysis. The samples were kept at 5˚C in the refrigerator until they were analyzed at the laboratory [33].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantification of Metal Contaminants and Risk Assessment in Some Urban Watersheds

Adeniyi¹,

Okedeyi²,

Sowemimo³

et al. 2020

JWARP

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“…The unwholesomeness of drinking water resulting from contaminants released from different anthropogenic sources has become a global concern [1,2]. Over at least the past two decades, there has been increased concern regarding the quality of tap water due to pollution and its undesirable taste and odor [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Drinking Water Quality: Physical and Chemical Evaluation of Tap and Packaged Waters from Eight Local Government Areas in Lagos, Nigeria

Yusuf

Majolagbe

Sowemimo

2017

JRRS

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Introduction The inadequacy of pipe borne water supplies in urban centers is a growing problem. In recent years, packaged waters became major sources of drinking water in the households and at work. Aim This study aimed at evaluates the physical and chemical quality of packaged water sold in some part of Lagos Metropolis. Compare the quality with that of tap water; and check compliance with respect to national and international regulatory standards. Materials and Methods Thirty tap water and fifty seven packaged water samples of different types were selected by random sampling and analysed for trace metals using atomic absorption spectrometry; Total hardness was measured titrimetically; pH, electrical conductivity and anions were measured using meters. Results and Conclusion The results showed that the concentrations of trace metals and anions in both tap and packaged waters were below the drinking water threshold values stipulated by national and international agencies, with the exception of the nitrate (NO3-), where 11 % and 20 % respectively of the bottled and sachet water samples investigated exceeded the USEPA standard of 10 mg L-1. This finding may result from the geological formations through which the ground water flows and substances dissolving from either natural sources or from household plumbing systems. This study concludes that the systematic monitoring by drinking water authorities of water quality is essential and the enforcement agencies in the state (NAFDAC and the Ministry of Health) need to get the producers of 'packaged water' to comply with the national drinking water guidelines.

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Fly ash and TiO2 modified fly ash as adsorbing materials for removal of Cd(II) and Pb(II) from aqueous solutions

Singh¹,

Singh²,

Kumar³

et al. 2023

Journal of Hazardous Materials Advances

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Classification and Health Risk Assessment for Borehole Water Contaminated by Metals in Selected Households in Southwest Nigeria

Cited by 10 publications

References 23 publications

Quantification of Metal Contaminants and Risk Assessment in Some Urban Watersheds

Quantification of Metal Contaminants and Risk Assessment in Some Urban Watersheds

Drinking Water Quality: Physical and Chemical Evaluation of Tap and Packaged Waters from Eight Local Government Areas in Lagos, Nigeria

Fly ash and TiO2 modified fly ash as adsorbing materials for removal of Cd(II) and Pb(II) from aqueous solutions

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