نتایج جستجو برای: drinking water standards

تعداد نتایج: 675339  

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...

Journal: :World Journal of Environmental Research 2022

The study assessed the quality of water obtainable in six (6) storage tanks present male and female hostels on Federal University Dutse campus. Physicochemical analyses; temperature, pH, turbidity, electrical conductivity, nitrate, phosphate were conducted using standard methods. Presumptive, confirmed, completed tests employed to determine total fecal coliforms from samples most probable numbe...

Journal: :iranian red crescent medical journal 0
karim adinehvand department of medical radiation engineering, borujerd branch, islamic azad university, borujerd, ir iran amin sahebnasagh department of medical radiation engineering, science and research branch, islamic azad university, tehran, ir iran mehdi hashemi-tilehnoee department of nuclear engineering, aliabad katoul branch, islamic azad university, aliabad katoul, ir iran; department of nuclear engineering, aliabad katoul branch, islamic azad university, aliabad katoul, ir iran. tel: +98-9113532381, fax: +98-1734235144

results the mean radon concentration in the drinking water of aliabad katoul is 2.90 ± 0.57 bq/l. conclusions the radon concentration in aliabad katoul is below the limit for hazardous levels, but some precautions will make conditions even safer for the local populace. objectives the aim of this study is to evaluate the concentration of soluble radon in the drinking water of the city of aliabad...

Journal: :Journal of water and health 2016
Emily Peterson Howard Shapiro Ye Li John G Minnery Ray Copes

Community water fluoridation is a WHO recommended strategy to prevent dental carries. One debated concern is that hydrofluorosilicic acid, used to fluoridate water, contains arsenic and poses a health risk. This study was undertaken to determine if fluoridation contributes to arsenic in drinking water, to estimate the amount of additional arsenic associated with fluoridation, and compare this t...

Mohammad Hossien Salmani , Ozra Ebrahimpoor , Parvaneh Talebi ,

Introduction: Today, bottled waters have attracted the assurance of consumers as one of the important drinking water supply resources, such that in some regions, the use of bottled waters has replaced the drinking water distribution system. The present study was carried out with the aim of measuring and determining the heavy metals in bottled water across a number of brands produced in Iran and...

Journal: :Journal of water and health 2010
A H Parker R Youlten M Dillon T Nussbaumer R C Carter S F Tyrrel J Webster

Target 7C of the Millennium Development Goals is to "halve, by 2015, the proportion of people without sustainable access to safe drinking water and basic sanitation". However, the corresponding indicator measures the "proportion of population using an improved drinking water source". This raises the question of whether "safe" and "improved" can be used interchangeably. This paper tests this hyp...

Raafat Abdeldayem

Drinking water has received considerable attention recently. However, misuse and mismanagement have resulted in a rapid and widespread decline in source-water quality and supply. Water quality guidelines can be used to identify constituents of concern in water, to determine the levels to which the constituents of water must be treated for drinking purposes. Membrane technology for the water cyc...

2003
Michael Moran Pixie Hamilton

National Water-Quality Assessment (NAWQA) Program collected or compiled data on ground water from 1926 private wells in rural areas across the United States from 1986 to 1999. These private wells, also called domestic wells, are owned and operated by the homeowners and provide water for household uses, including drinking, food preparation, watering lawns and gardens, bathing, and washing clothe...

Journal: :iranian journal of public health 0
k. imandel v. iranshahi

for better understanding of tehran ground water, samples were taken randomly from 340 out of 655 deep & semi deep wells in 1993, which dug by tehran water supply and sewage engineering company. 260 water specimens were examined chemically and physically and compared with the 1993 world health organization (who) and food and agriculture organization (fao) criteria and analyzed statistically. log...

Journal: :journal of tethys 0

in this research, the groundwater quality of abhar plain was studied for drinking, domestic and irrigation uses. to assess the evaluation of hydrochemistry and quality, 26 groundwater samples were collected and analyzed for the physicochemical factors such as ph, electric conductivity (ec), total dissolved solids (tds), total hardness (th), na+, k+, ca2+,mg2+, cl-, so42-, hco3-, co32- during oc...

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