RT info:eu-repo/semantics/article
T1 Fluoride Levels in Supply Water from the Canary Islands Region
A1 Rodríguez Díaz, Rubí Nieves
A1 Revelo-Mejía, Inés A.
A1 Alejandro-Vega, Samuel
A1 Paz-Montelongo, Soraya
A1 Niebla-Canelo, Daniel
A1 Cerdán-Pérez, Santiago
A1 Rubio-Armendáriz, Carmen
A1 Gutiérrez-Fernández, Ángel J.
A1 Hardisson, Arturo
A1 Hernández-Sánchez, Cintia
K1 Canary Islands
K1 fluoride
K1 supply water
K1 risk assessment
AB The Canary Islands, located in the Atlantic Ocean, are an archipelago of volcanic originwhich, for decades, has been affected by natural fluoride contamination in the water supply of someof its islands, mainly the island of Tenerife. In addition, recent volcanic eruptions in the archipelagoand the increased demand for water supply have led to an increase in the fluoride content in otherareas which, historically, were not affected. Fluoride content was determined in 274 water supplysamples from the most populated islands of the Canary Islands (Tenerife and Gran Canaria) collectedduring the months of June 2021 to May 2022. The samples were analysed by fluoride ion selectivepotentiometry. The highest concentrations in Tenerife were found in the municipalities of Sauzal(7.00 mg/L) and Tegueste (5.39 mg/L), both water samples are over the parametric value of 1.5 mg/Lset in the supply water legislation. In the Gran Canaria Island, the highest fluoride levels were foundin Valsequillo and Mogán with 1.44 mg/L in both locations, but under the parametric fluoride valueabovementioned. Consumption of just 1 L of water per day in the El Sauzal area would result in acontribution rate of 77% for adults and children over 15 years of age (Upper Level value of 7 mg/day)and 108% for children 9–14 years of age (UL value of 5 mg/day). The contribution rates increaseconsiderably, reaching or exceeding 100% of the reference value (UL) with increasing consumptionof 1 to 2 L of water per day. Therefore, it is considered that there is a health risk of overexposureto fluoride on the island of Tenerife. In the case of the island of Gran Canaria, it has been shownthat even the consumption of 2 litres of water per day does not confer contribution rates that pose ahealth risk.
SN 2304-8158
YR 2023
FD 2023
LK http://riull.ull.es/xmlui/handle/915/34979
UL http://riull.ull.es/xmlui/handle/915/34979
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 13-jul-2024