High concentrations of fluoride and boron in drinking water wells in the Muenster region - Results of a preliminary investigation
Autor: | Wolfgang Hellmeier, Klaus Ott, Martin Lacombe, Frank Hillermann, Markus Kaup, Angela Queste, Werner Mathys, Bianca Bortulussi |
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Rok vydání: | 2001 |
Předmět: |
business.product_category
Fluorosis Dental Mineralogy chemistry.chemical_element Salt (chemistry) Fluorides chemistry.chemical_compound Water Supply Germany Marl medicine Humans Water Pollutants Child Boron chemistry.chemical_classification geography geography.geographical_feature_category Toothpaste Public Health Environmental and Occupational Health medicine.disease chemistry Environmental chemistry business Fluoride Groundwater Dental fluorosis Water well |
Zdroj: | International Journal of Hygiene and Environmental Health. 203:221-224 |
ISSN: | 1438-4639 |
DOI: | 10.1078/s1438-4639(04)70032-2 |
Popis: | In 1998, two cases of severe dental fluorosis in schoolchildren occurred in the Muenster region. These cases took place in one household, where fluoridated toothpaste, fluoridated salt, and fluoride tablets were consumed. Furthermore, the family used drinking water from its private well only. Analyses of the well water ordered by local health officials revealed very high amounts of fluoride, boron, and other electrolytes. This unusual combination of high amounts of fluoride and boron could also be found in the water of a great number of other private wells that are the only source for drinking water in this rural region of the Muensterland. Anthropogenic sources could be excluded. Because of this, the results of the water samples were collated to the specific geological situation in this area. In the Muenster region there are marl layers of the chalk era covered with quarternary sediments. The quarternary sediments are up to 10 to 20 metres thick and they usually conduct the groundwater. The marl contains high concentrations of fluoride and boron. In some places the groundwater has contact with these layers. To check the amount of fluoride and boron in the groundwater, indicator values were sought, which can give a hint of high contents of these trace elements. In this study the conductivity and acidity were identified as possible indicators of a high amount of fluoride and boron in the drinking water in this specific region. To work economically and efficiently, the drinking water should be checked for fluoride and boron on a regular basis only when these values are extraordinarily high. In the case of high concentrations, especially of fluoride, in the drinking water the persons concerned should be informed about their potential health risk, giving them the opportunity to optimise the total daily intake of fluoride. |
Databáze: | OpenAIRE |
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