نتایج جستجو برای: drinking water fluoride content

تعداد نتایج: 962794  

Journal: :international journal of occupational and environment medicine 0
isi ogbu department of medical laboratory science, faculty of health sciences and technology university of nigeria nsukka-enugu campus, nigeria oio okoro department of medical laboratory science, faculty of health sciences and technology university of nigeria nsukka-enugu campus, nigeria ei ugwuja department of chemical pathology, faculty of clinical medicine, ebonyi state university, p.m.b. 053 abakaliki, nigeria

abnormal fluoride levels in drinking water have been associated with adverse health effects. to determine the fluoride content of well waters in enugu, southeastern nigeria, water samples from 50 artisan wells chosen by multistage sampling procedure from the 5 zones of enugu municipality were analyzed in duplicates for their fluoride content. the zonal mean values were 0.60, 0.70, 0.62, 0.62, a...

Fluoride in drinking water has a profound effect on teeth. Since drinking water is an important source of fluoride, the evaluation of the fluoride content of water resources is necessary. Temporal variations and spatial distribution of fluoride in drinking water of some selected parts of Kurdistan Province, Iran, have been studied using geographic information system (GIS) techniques. Thus, 40 v...

Fluoride is found in all water resources at different concentrations and drinking water is the major source of fluoride exposure. Thus, because of the adverse effect of fluoride in low and high concentrations, the evaluation of its content in drinking water is necessary. In the present study, the temporal variations and spatial distribution of fluoride concentrations in the drinking water of vi...

Journal: :iranian journal of toxicology 0
محمد نوری سپهر mohammad noori sepehr department of environmental health engineering, karaj university of medical sciences, karaj, iran هدی امیری hoda amiri department of environmental health engineering, karaj university of medical sciences, karaj, iran

background: the existence of fluoride ion in potable water has distinctive effects on human health. fluoride is attracted by positively charged calcium in teeth and bones due to its strong electro-negativity which results in dental, skeletal, and non-skeletal forms of xuorosis and associated health complaints in children as well as adults. methods: water samples from groundwater used for drinki...

2012
P.V. Kotecha S.V. Patel K.D. Bhalani D. Shah V.S. Shah K.G. Mehta

BACKGROUND & OBJECTIVES Endemic fluorosis resulting from high fluoride concentration in groundwater is a major public health problem in India. This study was carried out to measure and compare the prevalence of dental fluorosis and dental caries in the population residing in high and normal level of fluoride in their drinking water in Vadodara district, Gujarat, India. METHODS A cross-section...

2014
Ene Indermitte Astrid Saava Enn Karro

Fluoride is a naturally occurring contaminant in groundwater in Estonia. There are several regions in Estonia with fluoride contents in public water supplies as high as 7 mg/L. Long-term exposure to high-fluoride drinking water may have several adverse health effects, primarily dental fluorosis. The opportunities for exposure reduction rely highly on water treatment technologies. Since 2004 pub...

Journal: :jundishapur journal of health sciences 0
afshin maleki department of environmental health, school of health, kurdistan university of medical sciences, sanandaj, ir iran seyyed nad ali alavi bakhtiarvand department of environmental health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran seyyed nad ali alavi bakhtiarvand department of environmental health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran mehdi safari department of environmental health, school of health, kurdistan university of medical sciences, sanandaj, ir iran reza rezaee department of environmental health, school of health, kurdistan university of medical sciences, sanandaj, ir iran mohammad ali zazuli department of environmental health, school of health and research centre of health sciences, mazandaran university of medical sciences, sari, ir iran

fluoride is one of the most important elements in the composition of teeth and bones. this element can enter the body via different ways. however, drinking water is the most important way to receive fluoride by a lot of people. an increase in fluoride level in the body causes dental fluorosis and its absence leads to teeth decay. standard rate of fluoride in drinking water is determined by the ...

2014
Zubaidah HA Rahim Marina M Bakri Zakir HM Ahmed IA Zulkifli NA

OBJECTIVE In children, excessive ingestion of fluoride from different sources including bottled drinking water and flavoured beverages or soft drinks can lead to the development of dental fluorosis. In addition, the pH level of beverages is important. Low pH can cause dental erosion. In this study we explore the fluoride content and pH level of certain popular beverages available in Malaysian s...

Journal: :Indian pediatrics 2014
Gitte Sunil Vilasrao K M Kamble Ramanath N Sabat

OBJECTIVE To assess the prevalence and type of fluorosis among children from randomly selected villages of Chhattisgarh, and its relationship with fluoride levels in drinking water. METHODS A community based door-to-door survey was conducted in the sampled villages of seven districts of Chhattisgarh state during the year 2013-14. The field case definitions were used for labelling types of flu...

Journal: :jundishapur journal of health sciences 0
afshin takdastan environmental technologies research center, department of environmental health,ahvaz jundishapur university of medical sciences, ahvaz, ir iran saeed emami tabar department of environmental engineering, islamic azad university, khuzestan science and research branch, ahvaz, ir iran abdolkazem neisi department of environmental health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran azadeh eslami department of environmental engineering, college of environment and energy, tehran science and research branch, islamic azad university, tehran, ir iran; department of environmental engineering, college of environment and energy, tehran science and research branch, islamic azad university, tehran, ir iran. tel: +98-9166054619, fax: +98-6113342262

background existence of fluoride in drinking water above the permissible level causes human skeletal fluorosis. objectives electrocoagulation by iron and aluminum electrodes was proposed for removing fluoride from drinking water. materials and methods effects of different operating conditions such as treatment time, initial ph, applied voltage, type and number of electrodes, the spaces between ...

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