Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

Vetrimurugan, E.; Brindha, K.; Elango, L.; Ndwandwe, O.M.

doi:10.1007/s13201-016-0472-6

Cited by 172 publications

(79 citation statements)

References 42 publications

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“…The source of copper species in the water may point to mineralization reactions and weathering. Similar observations have been documented in literature [30]. Interestingly, the complexes [ ( 4 ) 4 ] 6− and [ ( 4 ) 4 ] 6− were the most dominant in various sampling sites as presented in Figure 5.…”

Section: Chemical Speciation Of Coppersupporting

confidence: 89%

The Speciation of Selected Trace Metals in Nairobi River Water, Kenya

Chebet¹,

Damaris²,

Kibet³

et al. 2018

Eurasian J Anal Chem

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Metal ions form complexes with naturally occurring ligands released from industrial effluent. The complexes are transported and enter the environment and biological system leading to environmental degradation and health problems. This contribution investigates the speciation of trace metals in water samples collected from Nairobi River. Heavy metals (Pb, Mn, Cu, Fe, Cr and Zn) were determined using spectroscopic techniques whereas sulfaver 4 method, diazotization, and titration methods were used to determine the concentration of SO4 2+ , NO 6+ and Cr(OH)(SO4)). Traces of free metal ions (Cu, Fe and Mn) were found in Lenana section of Nairobi River. Traces of free metal ions are the most aggressive water toxicants due to their high solubility in biological systems.

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Section: Chemical Speciation Of Coppersupporting

confidence: 89%

The Speciation of Selected Trace Metals in Nairobi River Water, Kenya

Chebet¹,

Damaris²,

Kibet³

et al. 2018

Eurasian J Anal Chem

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“…These areas are contaminated with sewage water as well as industrial effluents. Exposure to high concentration of Cd may cause liver and kidney damage as well as producing acute health effects [68,69].…”

Section: Heavy Metal Pollution Assessmentmentioning

confidence: 99%

Use of Heavy Metal Content and Modified Water Quality Index to Assess Groundwater Quality in a Semiarid Area

Maskooni

Naseri-Rad

Berndtsson

et al. 2020

Water

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Groundwater is a major source of drinking and agricultural water supply in arid and semiarid regions. Poor groundwater quality can be a threat to human health especially when it is combined with hazardous pollutants like heavy metals. In this study, an innovative method involving entropy weighted groundwater quality index for both physicochemical and heavy metal content was used for a semiarid region. The entropy weighted index was used to assess the groundwater’s suitability for drinking and irrigation purposes. Thus, groundwater from 19 sampling sites was used for analyses of physicochemical properties (electrical conductivity—EC, pH, K+, Ca2+, Na+, SO42−, Cl−, HCO3−, TDS, NO3−, F−, biochemical oxygen demand—BOD, dissolved oxygen—DO, and chemical oxygen demand—COD) and heavy metal content (As, Ca, Sb, Se, Zn, Cu, Ba, Mn, and Cr). To evaluate the overall pollution status in the region, heavy metal indices such as the modified heavy metal pollution index (m-HPI), heavy metal evaluation index (HEI), Nemerow index (NeI), and ecological risks of heavy metals (ERI) were calculated and compared. The results showed that Cd concentration plays a significant role in negatively affecting the groundwater quality. Thus, three wells were classified as poor water quality and not acceptable for drinking water supply. The maximum concentration of heavy metals such as Cd, Se, and Sb was higher than permissible limits by the World Health Organization (WHO) standards. However, all wells except one were suitable for agricultural purposes. The advantage of the innovative entropy weighted groundwater quality index for both physicochemical and heavy metal content, is that it permits objectivity when selecting the weights and reduces the error that may be caused by subjectivity. Thus, the new index can be used by groundwater managers and policymakers to better decide the water’s suitability for consumption.

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“…The water quality parameters were analysed and reported in various parts of the globe, the heavy metal concentration was found to be the essential factor to decide the quality of river and ground wsater [8][9][10][11][12][13][14]. Based on the previous reports available the study area was selected for the present study.…”

Section: Introductionmentioning

confidence: 99%

Determination of Physicochemical Parameters and Heavy Metals Concentration in Drinking Water at Asgede Tsimbila District, Tigray, Ethiopia

Haftu

Sathishkumar

2020

Chemistry Africa

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The characteristics of the water decides whether the available water is suitable for consumption of living organisms. Therefore the measurement of heavy metals concentration and physicochemical parameters decides the quality of the water resources which significantly contributes to the social quality of the people living in the particular area. In this regard an attempt is made to measure the quality of the water available in Asigde Tsimbla Woreda in Northwestern Tigray, Ethiopia. There are 25 drinking water samples were collected for the analysis. In order to understand the quality of drinking water in Asigde Tsimbla Woreda, national and international standards was utilized for analyzing the various physicochemical parameters and heavy metal concentrations. The heavy metal concentration was found to be Cd (44%), Co (76%), Cr (40%), Fe (76%), Ni (44%), Cu (16%), Pb (64%) and Zn (100%) which were higher than WHO limit for drinking purposes. The results shows that water exhibit the poor in quality, then it needs the physicochemical treatment during drinking purposes.

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Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

Cited by 172 publications

References 42 publications

The Speciation of Selected Trace Metals in Nairobi River Water, Kenya

The Speciation of Selected Trace Metals in Nairobi River Water, Kenya

Use of Heavy Metal Content and Modified Water Quality Index to Assess Groundwater Quality in a Semiarid Area

Determination of Physicochemical Parameters and Heavy Metals Concentration in Drinking Water at Asgede Tsimbila District, Tigray, Ethiopia

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