Groundwater chemistry of weathered zone aquifers of an area underlain by basement complex rocks

Malomo, S.; Okufarasin, V.A.; Olorunniwo, M.A.; Omode, A. A.

doi:10.1016/0899-5362(90)90015-7

Cited by 22 publications

(25 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values were lower than those reported by Malomo et al (1990), who reported concentrations of 124 and 1.2 mg/L for nitrate and nitrite, respectively, in shallow groundwater in southwest Nigeria. However, the values obtained in this study were higher than those reported for groundwater in Ugbowo part of Benin City by Agatemor and Okolo (2007).…”

Section: Chemical Characteristicscontrasting

confidence: 84%

Physico-chemical characteristics of well waters in four urban centers in Southern Nigeria

Agatemor

2010

Environmentalist

View full text Add to dashboard Cite

An ensemble of thirty physico-chemical characteristics was used to assess the quality of well waters in four urban centers in southern Nigeria: Lagos, Benin City, Warri, and Ekpoma. The characteristics investigated include pH; color; turbidity; salinity; electrical conductivity, EC; total dissolved solids, TDS; total suspended solids, TSS; dissolved oxygen, DO; total hydrocarbon, THC; biochemical oxygen demand, BOD; chemical oxygen demand, COD; and nitrate, nitrite, ammonia, sulfate, and phosphate concentrations. Also monitored were the concentrations of sodium, calcium, potassium, magnesium, chloride, bicarbonate, iron, lead, copper, manganese, zinc, chromium, nickel, and cadmium. The results obtained were compared with World Health Organization, WHO, and Nigerian Federal Ministry of Environment, FME, drinking water standards. The results show that with the well water obtained from Lagos, turbidity, 11.80 NTU; pH, 5.68; EC, 1065.55 lS/cm; TDS, 539.00 mg/L; concentrations of iron, 1.83 mg/L; manganese, 0.14 mg/L; and lead, 1.35 mg/L did not meet the WHO standards. In Warri, pH, 5.19; concentrations of lead, 1.35 mg/L; and chromium, 0.10 mg/L in the well water were above the WHO desirable limits. The results also indicated that the well water from Benin City contained concentrations of chromium, 0.18 mg/L; and lead, 0.20 mg/L that exceeded the recommended WHO limits. In Ekpoma, the pH, 6.00; concentrations of chromium, 0.15 mg/L; and lead, 0.44 mg/L were higher than the desirable limits of WHO. Generally, the assessments revealed that the waters were good and fit for drinking and other domestic application without serious threat to public health.

show abstract

Section: Chemical Characteristicscontrasting

confidence: 84%

Physico-chemical characteristics of well waters in four urban centers in Southern Nigeria

Agatemor

2010

Environmentalist

View full text Add to dashboard Cite

show abstract

“…Malomo et al [30] reported nitrate concentrations up to 124 mg/L and nitrite up to 1.2 mg/L in shallow groundwater near pollution source in southwest Nigeria. These concentrations were unusually high.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Groundwater Quality in a Typical Rural Settlement in Southwest Nigeria

Adekunle

Adetunji²,

Gbadebo³

et al. 2007

IJERPH

210

129

View full text Add to dashboard Cite

In most rural settlements in Nigeria, access to clean and potable water is a great challenge, resulting in water borne diseases. The aim of this study was to assess the levels of some physical, chemical, biochemical and microbial water quality parameters in twelve hand – dug wells in a typical rural area (Igbora) of southwest region of the country. Seasonal variations and proximity to pollution sources (municipal waste dumps and defecation sites) were also examined. Parameters were determined using standard procedures. All parameters were detected up to 200 m from pollution source and most of them increased in concentration during the rainy season over the dry periods, pointing to infiltrations from storm water. Coliform population, Pb, NO3− and Cd in most cases, exceeded the World Health Organization recommended thresholds for potable water. Effect of distance from pollution sources was more pronounced on fecal and total coliform counts, which decreased with increasing distance from waste dumps. The qualities of the well water samples were therefore not suitable for human consumption without adequate treatment. Regular monitoring of groundwater quality, abolishment of unhealthy waste disposal practices and introduction of modern techniques are recommended.

show abstract

“…The high levels of nitrate observed in this study could probably be attributed to poor sanitation, probably leaching of nitrates from the nearby pit latrines. In Nigeria, for example, nitrate levels in shallow wells were demonstrated to correlate with high human population density [45].…”

Section: Discussionmentioning

confidence: 99%

Effect of Effluents From Warri Refinery Petrochemical Company WRPC on Water and Soil Qualities of “Contiguous Host” and “Impacted on Communities” of Delta State, Nigeria

Nduka¹,

Orisakwe²

2009

TOEPTJ

View full text Add to dashboard Cite

This study investigated the effect of refinery effluents on different sources of potable water supply in two areas of Niger Delta contiguous host and impacted on communities of Delta State, Nigeria (surface water, shallow well water and borehole water) in Ekpan, its adjoining communities and creeks. Since open and underground water bodies are regarded as final recipient of most environmental pollutant, we sought through the study to provide data on pollutant load of potable water supply of the study area. Cadmium, chromium, lead and manganese were determined using Atomic Absorption spectrophotometry; physico-chemical parameters such as nitrate,nitrite, pH, Biological oxygen demand BOD, Total hardness TH, salinity and electrical conductivity EC were all determined using their standard methods. Surface water of Aja-Etan and Ijala had highest levels of cadmium (1.45±0.01 and 1.20 ± 0.0(mg/l), that of ifie-kporo and Ekpan had highest lead (1.00 ± 0.01mg/l). Ekpan borehole water is more acidic (4.79± 0.01) than others. Agigba and Ajamimogha surface water had highest level of manganese (2.40 ± 0.03 and 2.20 ± 0.03mg/l). With the exception of Ekpan shallow well, BOD and hardness were in highest concentration in surface water. Some of the parameter were above WHO standards and USEPA maximum contaminant level MCL.

show abstract

Groundwater chemistry of weathered zone aquifers of an area underlain by basement complex rocks

Cited by 22 publications

References 2 publications

Physico-chemical characteristics of well waters in four urban centers in Southern Nigeria

Physico-chemical characteristics of well waters in four urban centers in Southern Nigeria

Assessment of Groundwater Quality in a Typical Rural Settlement in Southwest Nigeria

Effect of Effluents From Warri Refinery Petrochemical Company WRPC on Water and Soil Qualities of “Contiguous Host” and “Impacted on Communities” of Delta State, Nigeria

Contact Info

Product

Resources

About