Fluoride pollution in a salt marsh: Movement between soil, vegetation, and sheep

Baars, A.J.; Beek, H. van; Spierenburg, Th. J.; Graaf, G. J. de; Beeftink, W.G.; Nieuwenhuize, J.; Boom, Jan-Tjeerd; Pekelder, J. J.

doi:10.1007/bf01689583

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…Nguta et al [25] reported high levels of fluoride and heavy metals in water and soil around the Kenya fluorspar factory and therefore, the presence of these elements might have led to the bioaccumulation in animals and plants. This is consistent with the report by Baars et al [9]. These results mean that there is a potential risk that could be looming on the health of the animals as well as the human beings who consume meat.…”

Section: Discussionsupporting

confidence: 93%

Assessment of Fluoride and selected heavy metals in food chain around Fluorspar mining Plant, Kenya

Barmao

Cherutoi

Mitei

et al. 2019

Greener J Environ Manag Public Saf

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The purpose of the research was to assess the levels of fluoride and selected heavy metals in caprine, mutton, and vegetation around the Fluorspar mining plant in Kerio Valley. Previous studies have reported contamination of water and soil by acidic factory discharges laced with hazardous heavy metals and fluoride in Kerio Valley, Kenya. However, there is no data on Fluoride and selected heavy metals in food chain around Fluorspar mining Plant. This formed the motivation behind the study to avail the data on the level of contamination. The experimental design was an entirely randomized design where mutton, caprine, and plant (leaves, grass, corn maize) samples were randomly collected from the three locations (Tumeiyo, Choff, and Kimwarer) in three replicates and Turesia which was selected as the reference or control site. Sample preparations and analyses were done according to recommended methods. Fluoride levels were 6.34±2.45 mg/Kg and 9.58±6.03 mg/Kg in caprine and mutton, respectively. Heavy metals ranged between 0.06±0.02-0.06±0.03 mg/Kg for Pb, 0.06±0.03-0.09±0.06 mg/Kg for Cd, 3.31±1.90-3.66±2.41 mg/Kg for Zn, 0.51±0.32-0.82±0.55 mg/Kg for Fe and 0.44±0.28-0.54±0.33 mg/Kg for Cr. Fluoride levels in vegetation ranged between 4.77±2.52 and 6.27±3.40 mg/Kg, while heavy metal levels ranged between 0.01±0.01-0.04±0.02 mg/Kg for Pb, 0.02±0.02-0.05±0.03 mg/Kg for Cd, 0.26±0.21-0.48±0.30 mg/Kg for Zn, 0.21±0.15-0.50±0.34 mg/Kg for Fe and 0.19±0.14-0.23±0.18 mg/Kg for Cr. Zn, Fe and Cr levels in meat and fluoride surpassed the WHO/FAO maximum limits while Pb and Cd in all the samples were within allowable limits. Conclusively, meat recorded higher analytes concentrations compared to vegetation. The fact that the levels of key chemical analytes in the assessed samples were availed and the contamination status indicated, presented the primary significance of this research.

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Section: Discussionsupporting

confidence: 93%

Assessment of Fluoride and selected heavy metals in food chain around Fluorspar mining Plant, Kenya

Barmao

Cherutoi

Mitei

et al. 2019

Greener J Environ Manag Public Saf

View full text Add to dashboard Cite

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“…The concentration of fluoride in bones varies, however, with age, sex and the type and specific part of the skeleton and is believed to reflect an individual's long-term exposure to fluoride. In contrast to chelating agents, fluoride is not irreversibly bound to bone tissues, and is mobilized continuously from the skeleton and subsequently excreted (Baars et al, 1987;WHO, 2002).…”

Section: Tissue Distributionmentioning

confidence: 99%

Opinion of the Scientific Panel on contaminants in the food chain [CONTAM] related to Fluorine as undesirable substance in animal feed

2004

EFSA Journal

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“…The public health and economic importance of fluorosis is significant in many endemic areas in view of the occurrence of debilitating skeletal fluorosis in humans and the more recent discovery of pathology in cattle, sheep and other livestock ( Baars et al . 1987 ; Shupe et al .…”

Section: Introductionmentioning

confidence: 99%

Distribution of fluoride and fluorosis in Ethiopia and prospects for control

Kloos

Haimanot

1999

Tropical Med Int Health

107

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SummaryA review and mapping of fluoride test data for 270 water sources in 126 communities and examination of the literature of fluorosis distribution in Ethiopia show that this health problem extends beyond the Rift Valley into some highland communities. Fluoride concentrations above 5.0 mg/l in the Rift Valley were found mostly in hot springs (100% of all sources), lakes (78%), shallow wells (54%) and boreholes (35%) and the lowest concentrations (below 1.5 mg/l) in springs and rivers. Analysis of hydrochemical, economic and demographic factors in the spatial distribution of high-fluoride domestic water sources indicates that the fluorosis problem has become more serious in the Rift Valley in recent decades. Considerable spatial variation in the occurrence of fluoride, even within the same communities, and the presence of some lowfluoride water sources in the Rift Valley offer possibilities for geochemical exploration for acceptable domestic sources. The defluoridation programme in the Wonji irrigation scheme illustrates the problems faced by a large rural community in a developing country. Possibilities for control are examined and recommendations made for the development of alternative water sources and promising defluoridation methods using locally available materials and technologies.

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Fluoride pollution in a salt marsh: Movement between soil, vegetation, and sheep

Cited by 4 publications

References 9 publications

Assessment of Fluoride and selected heavy metals in food chain around Fluorspar mining Plant, Kenya

Assessment of Fluoride and selected heavy metals in food chain around Fluorspar mining Plant, Kenya

Opinion of the Scientific Panel on contaminants in the food chain [CONTAM] related to Fluorine as undesirable substance in animal feed

Distribution of fluoride and fluorosis in Ethiopia and prospects for control

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