Fluorine [F, 9]

Kabata‐Pendias, Alina; Szteke, Barbara

doi:10.1201/b18198-15

Cited by 2 publications

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“…Soil Ca scarcity is another factor related to the mobility of the F element since Ca can bound F in low soluble species as CaF 2 . On the contrary, a high presence of Na is related to high F solubility since NaF is one of the most mobile compounds 45,52 . Concerning the OM‐F, the observed values are consistent with the content of organic C of the soil, being the differences found between the three sites also related to this variable.…”

Section: Discussionsupporting

confidence: 74%

“…in a study on the fluoride content of leafy vegetables in the Rift valley or elsewhere. The content of TF in soils is inherited from the minerals composing the bedrock and its distribution is related to pedogenic processes and soil texture 45 . However, as also observed in the present study, previous works that examined the fractional distribution of fluoride in soil identified the Res‐F as a predominant fraction 17,46,47 normally existing in mineral form and hardly bioavailable 47 .…”

Section: Discussionsupporting

confidence: 74%

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Fluoride uptake and translocation in food crops grown in fluoride‐rich soils

et al. 2020

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BACKGROUND: The East African Rift Valley (EARV) area is characterized by an intense volcanic activity, which largely influences the nature of soils, ground and surface waters causing a transfer of fluoride from volcanic emissions to the environment. Field experiments were conducted in fluorine-contaminated areas of Ngarenanyuki (Arumeru district) in north Tanzania. In order to evaluate the potential fluoride exposure from diet and the related health risk for the local population, the content of fluoride in soil and plant tissues was assessed, focusing on the edible portions (leaves, fruits or seeds) of the main cultivated and consumed food crops in the area. RESULTS: Average fluoride contents of 8.0, 11.4, 11.3 and 14.2 mg kg −1 of dry matter were observed respectively for maize (Zea mays L.), tomato (Lycopersicon esculentum Mill.), bean (Phaseolus vulgaris L.) and kale (Brassica sp. pl.) edible parts. The cumulative estimated average daily dose (EADD) ranged from 0.026 to 0.165 mg F d −1 kg −1 among different rural population groups and considering two different hypotheses of absorption fraction (75% or 100%), i.e. the amount of fluoride that is absorbed during the digestion process. The associated hazard index (HI) values varied from 0.43 to 2.75. CONCLUSIONS: Considering the dietary habits of the local population, the outcomes of the present study suggest that the investigated crops can substantially contribute to fluoride related diseases, especially in earlier ages.

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Section: Discussionsupporting

confidence: 74%