Fluoride contamination in groundwater sources in Southwestern Nigeria: Assessment using multivariate statistical approach and human health risk

Emenike, PraiseGod C; Tenebe, I.T.; Jarvis, Peter

doi:10.1016/j.ecoenv.2018.03.022

Cited by 120 publications

(40 citation statements)

References 55 publications

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“…The hazard quotients for intake (ADD intake ) of high uoride concentrations were assessed by integrating the pollutants obtained from the US EPA 2011 handbook as well as the uoride variation in the groundwater of the study area. A similar estimation and the impact of uoride contamination in the groundwater of southwestern Nigeria 53…”

Section: Ingestion Pathwaymentioning

confidence: 61%

The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India

Karunanidhi¹,

Aravinthasamy²,

Deepali

et al. 2020

RSC Adv.

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Section: Ingestion Pathwaymentioning

confidence: 61%

The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India

Karunanidhi¹,

Aravinthasamy²,

Deepali

et al. 2020

RSC Adv.

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“…(2) where CDD in : chronic daily dose via ingestion (mg/kg day), CDD de : chronic daily dose via dermal exposure route (mg/ kg day), C fw : concentration of fluoride in drinking water (mg/L), EF r : exposure frequency (days/years), ED: exposure duration (years), BW: body weight (kg), AT: resident time (days/years), ESA: exposed skin area (cm 2 ), K: skin adherence factor, CF: conversion factor (L/cm 3 ), RfD: reference dose of fluoride (0.06 mg/kg day) obtained from the Integrated Risk Information System (IRIS) and database of the US EPA [44,45]. Furthermore, the detailed reference values of each parameter used for the above calculation are presented in Table 1 [1,2,10,16,18,40,44,45].…”

Section: Health Risk Assessment Modelmentioning

confidence: 99%

“…Fluoride concentration in drinking water is one of the world issues; the presence of higher concentration of fluoride in drinking water always shows negative effects in human's health from many regions in the world [1][2][3][4]. Recent reports advocate that more than 200 million people from the 25 nations in the world are under the threat of the fluorosis problem [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemistry and fluoride contamination in the hard rock terrain of central Telangana, India: analyses of its spatial distribution and health risk

Adimalla

Qian

2019

SN Appl. Sci.

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Groundwater is the primary source for drinking uses in the hard rock terrain of central Telangana, India, where most of the people rely on it for daily uses. Therefore, this study was carried out to comprehend the fluoride contamination and its associated health risk assessment to local dwellers. For this study, 54 groundwater samples were collected from bore wells and hand pumps in the study region and were analysed for fluoride and other physicochemical parameters. The results indicated by statistical mean values of Na + , Ca 2+ , Mg 2+ and K + are 182.14, 59.79, 23.90 and 3.74 mg/L, respectively, while HCO 3 2− , Cl − , SO 4 2− and NO 3 − are 236.1, 230.8, 167.7 and 81.9 mg/L, respectively. The fluoride concentration ranged from 0.8 to 4.2 mg/L, with a mean of 2.21 mg/L. Eighty-one percent of the groundwater samples exceeded the World Health Organization's water quality limit of 1.5 mg/L for fluoride. Piper trilinear diagram (PTD) signifies that groundwater quality in the study region is characterized by Na +-Cl − , Ca 2+-Mg 2+-Cl − and Na +-HCO 3 −-Cl − hydrochemical water types. Gibbs diagrams indicate that all the major ion chemistry of the groundwater in the study region is controlled by rockwater interactions, while evaporation plays a minor role. The health risk assessment results revealed that the associated hazard quotient (HQ) for the age range of 6 to 12 months within about 100% of the study area exceeded the acceptable HQ limits of 1. Furthermore, the HQ for age categories 6-11 years, 11-16 years and 16-18 years within 96.2, 68.5 and 50%, respectively, of the study locations were larger than 1. Results also indicate that age group 6 to 12 months was most prone to health risks in the study region. Therefore, in the study region, people should be taken necessary actions to abolish the groundwater contamination to protect the local dweller's health.

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“…Due to the regional importance of groundwater, comprehensive studies on the risks from groundwater usage have been conducted worldwide, including on groundwater environmental, exploitation and utilization risks. Thus far, studies of groundwater risk have mainly focused on aspects of groundwater environmental risk, especially groundwater quality and associated health risks [4][5][6][7][8][9][10][11]. Because groundwater systems are large, open and complex, great uncertainty exists in the process of groundwater development and utilization.…”

Section: Introductionmentioning

confidence: 99%

Assessing Risks from Groundwater Exploitation and Utilization: Case Study of the Shanghai Megacity, China

Zhang

et al. 2019

Water

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With rapid economic development, demand for water resources is continuously increasing, which has resulted in common overexploitation of groundwater, particularly in megacities. This overexploitation of groundwater over many years has brought a series of adverse problems, including groundwater level decline, land subsidence and hydrogeological issues. To quantitatively describe these risks, we propose a risk evaluation model for groundwater exploitation and utilization. By deducing and expanding on the cusp catastrophe type, this study breaks through the limitations on the catastrophe assessment method, e.g., the number of indicators, and establishes an improved catastrophe assessment model for groundwater exploitation and utilization risk. In addition, the index system of the risk evaluation is constructed including three criterion layers: groundwater system condition (B1), groundwater exploitation and utilization (B2) and groundwater environmental problems (B3) and is tested for the conditions in Shanghai City, eastern China. The evaluation results show that the comprehensive risk values for groundwater exploitation and utilization in all districts (counties) of Shanghai are between 0.68 and 0.85, which categorizes the city as in the moderate risk zone; therefore, the improved catastrophe model is suitable for assessing groundwater exploitation risk in Shanghai City and should be applicable more broadly for the effective protection and sustainable supply of groundwater.

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Fluoride contamination in groundwater sources in Southwestern Nigeria: Assessment using multivariate statistical approach and human health risk

Cited by 120 publications

References 55 publications

The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India

The effects of geochemical processes on groundwater chemistry and the health risks associated with fluoride intake in a semi-arid region of South India

Hydrogeochemistry and fluoride contamination in the hard rock terrain of central Telangana, India: analyses of its spatial distribution and health risk

Assessing Risks from Groundwater Exploitation and Utilization: Case Study of the Shanghai Megacity, China

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