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    Wyświetlanie 1-5 z 5
    Tytuł:
    Defluoridation by coagulation in drinkable water from the south east of Algeria
    Autorzy:
    Atia, D.
    Hoggui, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411770.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    coagulation
    Defluoidation
    fluorosis
    Oasis water
    Opis:
    The drinkable water in the south east of Algeria contains high quantity of fluoride which causes dental fluorosis. To decrease fluoride, we have chosen a sample with the biggest content of fluoride among many sources in order to coagulate it with Al2(SO4)3ź18H2O. After that the parameters influencing (concentration, pH, temperature) are studied to choose the best conditions for better reduction yield.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 5; 39-46
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decreasing fluoride by coagulation in drinkable water from Souf region of Algeria
    Autorzy:
    Atia, D.
    Hoggui, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411794.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Souf region
    defluoridation
    fluorosis
    coagulation
    drinkable water
    Opis:
    The drinkable water in Souf region at the south east of Algeria contains high quantity of fluoride which causes dental fluorosis. To reduce fluoride, we have chosen a sample with the biggest content of fluoride among many sources in order to coagulate it with Fe2(SO4)3źH2O. After that the parameters influencing (concentration, pH, temperature) are studied to choose the best conditions for better reduction.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 5; 57-65
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimizing fluoride by coagulation on iron(III) hydroxide in drinkable water from Oasis region of Algeria
    Autorzy:
    Atia, D.
    Hoggui, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411515.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Oasis region
    minimizing fluoride
    fluorosis
    coagulation
    drinkable water
    Opis:
    The drinkable water in oasis region of Algeria contains high quantity of fluoride which causes dental fluorosis. To reduce fluoride, we have chosen a sample with the biggest content of fluoride among many sources in order to coagulate it with FeSO4·H2O. After that the parameters influencing (concentration, pH, temperature) are studied to choose the best conditions for better reduction.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 7, 1; 23-29
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal variation in fluoride content in groundwaters of Langtang area, Northcentral Nigeria
    Autorzy:
    Dibal, H. U.
    Dajilak, W. N.
    Lekmang, I. C.
    Nimze, L. W.
    Yenne, E. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/100834.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    wody gruntowe
    fluorek
    fluoroza
    warstwa wodonośna
    groundwater
    fluoride
    fluorosis
    aquifer
    Opis:
    Thirty groundwater samples were collected at the peak of the rainy season and analysed for fluoride and other cations and anions in drinking water sources of Langtang area. For comparative purposes, thirty seven groundwater samples were collected in the dry season. The aim of the study was to determine variation in fluoride content with respect to the seasons. Fluoride in water was determined by the Ion Selective Electrode (ISE) and the cations by the Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The anion (sulphate) was determined by Multi – Ion Colorimeter, bicarbonate and chloride by titration method. In addition fluorine content in aquifer materials from a borehole section were determined by Fusion method. The two seasons show variation in content of fluoride in groundwater. Fluoride content in groundwater is higher in the dry season ranging from 0.13 – 10.3 mg/ l compared to the 0.06 – 4.60 mg/l values in the rainy season. Content of fluorine (0.01 wt %) in the aquifer materials (sands) is low from depth of 0 to 7.95 m. However, fluorine content increases with depth, from 7.95 to 10.60 m with concentration of 0.04 wt %, 0.05 wt % from 10.60 to 13.25m, and 0.07 wt % from 13.25 to 15.70 m, the content of fluorine however, decreased at depth 15.70 to18.55m with concentration of 0.02 wt % even with fluorite mineral in the aquifer material at this depth. Dilution of fluoride ion as a result of rain input which recharges the aquifer may be the main reason for lower values recorded in the rainy season. Over fifty and sixty percent of waters in both dry and rainy season have fluoride concentration above the WHO upper limit of 1.5 mg/l. Consumption of these elevated values of fluoride in groundwater of the study area, clearly manifests as symptoms of dental fluorosis.
    Źródło:
    Contemporary Trends in Geoscience; 2017, 6, 1; 11-27
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prevalence of skeletal fluorosis in fishermen from Kutch coast, Gujarat, India
    Autorzy:
    John, J.
    Hariharan, M.
    Remy, V.
    Haleem, S.
    Thajuraj, P.K.
    Deepak, B.
    Rajeev, K.G.
    Divakar, D.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/871373.pdf
    Data publikacji:
    2015
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    fishing industry
    prevalence
    skeletal fluorosis
    bone disease
    human disease
    fisherman
    Kutch coast
    Gujarat
    India
    Opis:
    Background. In health terms, consuming fluoride is well recognised to be a double-edged sword. Consumption of optimal amounts is beneficial to health, however an excess constitutes a health hazard. Objectives. To assess the prevalence of skeletal fluorosis in fishermen from the Kutch coast, Gujarat, India. Materials and method. A descriptive cross-sectional survey was conducted on 653 fishermen from the Kutch District, Gujarat, India, from October 2014 to December 2014. Clinical skeletal fluorosis was assessed using three diagnostic tests. Drinking water fluoride concentrations in different regions of the study area were determined. General information regarding age, gender and adverse habits were also collected. The Chi square test was used for comparisons and the confidence level and critical p-value were set at 95% and 5% respectively. Results. Fluoride concentrations in water from the study area ranged between 3.4- 6.9 ppm. The prevalence of skeletal fluorosis was 30.3%, out of which, the majority of the subjects had mild skeletal fluorosis (18.4%). This condition was found to be significantly associated with age and gender along with tobacco and alcohol consumption; depending on the habit’s duration. Conclusion. Being a public health problem in the fishermen community, skeletal fluorosis requires a-priori attention. Measures for preventing this disease should be undertaken on a communitywide basis.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2015, 66, 4
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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