drinking water chemical Articles
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WWEM-Day: Undercover WWEM Information
In Part 2 of our WWEM-Day installments we’re talking about our exciting undercover news… we have an updated model of one of our classic products about to launch! There will be a simplified design and less parts to make an already low maintenance product even better! This means greater accuracy, not to mention more ease and efficiency! Our new products will be focused on Drinking ...
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Contamination of groundwater and the risk to human health
Groundwater is a major source of drinking water in many parts of the world. In industrialised countries, there is increasing concern that groundwater reserves are being contaminated by industrial effluents and the chemical pesticides and fertilizers used in intensive farming. This paper compares some of the existing guidelines for acceptable concentrations of certain common contaminants in ...
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World Health Organization`s (WHO) Guidelines for drinking-water quality (GDWQ)
The World Health Organization's (WHO) Guidelines for drinking-water quality (GDWQ) were developed with the primary goal of enforcing protection on human health concerning the quality of drinking water. Consequently, it ensures public health is considered during the formulation and implementation of regional and national drinking-water actions and policies. Other objectives include: Providing a ...
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Inside EPA Article Quotes TSCA Blog Post `EPA Denies TSCA Section 21 Petition on Fluoride Chemicals in Drinking Water; Provides Response to Petition`
On April 19, 2017, Inside EPA quoted a post from the TSCA Blog in the article “Suit Over EPA's Rejection Of Fluoride Ban Claims TSCA Misinterpretation.” “This asserted view, that only a comprehensive risk evaluation considering all conditions of use will suffice, presents a very high threshold for action -- and seemingly an impossibly high threshold to move EPA to act," ...
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REX Evaluation Guide
REXTM (Real-timeElementalX-ray Fluorescence System) is the only instrument capable of unattended real-time elemental analysis of dissolved metallic contents in fluids using X-ray fluorescence with low parts-per-billion (ppb) sensitivity. Important applications exist for the following industries, among others: Municipal drinking water supply Chemical processing industry Mining and petroleum ...
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Arsenic removal using novel combined Fe/Mn adsorbent modified with silica
Arsenic pollution has become a dominant environmental concern in recent years. Various techniques for arsenic removal from water have been developed. However, these techniques efficiently remove arsenic from drinking water but require toxic and expensive chemicals and generate a large amount of exhaust sludge, which is not always regenerable. In this study a novel Fe-Mn-Si oxide material was ...
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Alternative Methods to RSK 175 Using Purge and Trap Concentration and Automated Headspace for the Analysis of Dissolved Gases in Drinking Water
Abstract With the growing price of oil, many alternative energy sources are being explored. Natural gas prices are actually decreasing, in large part to the use of hydraulic fracturing in areas like the Marcellus Shale in Pennsylvania. Due to increased concern over the hydraulic fracturing process and the release of methane and other chemicals into the local drinking water, a need has developed ...
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Comparative study of physico-chemical parameters of drinking water from some longevity and non-longevity areas of China
There is an obvious regional longevity phenomenon in China and many longevity counties are located in South China. This study was carried out to find the characteristics of elemental contents of drinking water in longevity areas in South China and the differences to non-longevity areas in China. A total of 128 drinking water samples were collected from longevity areas in South China (n = 40), ...
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An Alternative Method to RSK 175 using a Purge and Trap Concentrator and GC/FID
Abstract With the growing price of oil, many alternative energy sources are being explored. Natural gas prices are actually decreasing, in large part to the use of hydraulic fracturing in areas like the Marcellus Shale in Pennsylvania. Due to increased concern over the hydrofracturing process and the release of methane and other chemicals into the local drinking water, a need has developed for ...
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An Alternative Method to RSK 175 using a Purge and Trap Concentrator and GC/FID
Abstract With the growing price of oil, many alternative energy sources are being explored. Natural gas prices are actually decreasing, in large part to the use of hydraulic fracturing in areas like the Marcellus Shale in Pennsylvania. Due to increased concern over the hydrofracturing process and the release of methane and other chemicals into the local drinking water, a need has developed for ...
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Boron removal from brackish water by reverse osmosis and nanofiltration membranes: application of Spiegler–Kedem model and optimization
Drinking water should contain certain chemicals only in limited quantities. Boron, one of these chemicals which is considered as a threatening compound and is difficult to eliminate from water. The purpose of the research is to study the major role of reverse osmosis (RO) and nanofiltration (NF) process which can contribute to the removal of this inorganic element from brackish water. For ...
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Why Everyone Should Drink Filtered Water
Your body is made up of a lot of water; 60 to 65 percent to be exact. The water that you drink each day helps to replenish your body and give you strength. But, if you’re drinking water that contains heavy amounts of chemicals, metals, and other harmful ingredients, what does that say about your body composition? Untreated water could be responsible for a number of different health and ...
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Inside EPA Quotes B&C TSCAblogTM in Article Regarding Rejected TSCA Section 21 Fluoride Petition
On September 22, 2017, Inside EPA quoted the post “EPA Denies TSCA Section 21 Petition on Fluoride Chemicals in Drinking Water; Provides Response to Petition,” from Bergeson & Campbell, P.C.’s (B&C®) TSCAblogTM in the article “Suit Over Rejected Fluoride Petition Could Test EPA's Stance On TCSA 'Uses'.” Observers tracking EPA's implementation of the new ...
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Global Water Research Council selects best bioanalysis tools for endocrine disrupting chemicals
The aim of this fact sheet is to review the methodology used to establish guideline values for inorganic and organic chemicals which may be found in drinking water. Such guidance is needed to assist the management of good water quality when the potential for adverse health effects, based on the intrinsic toxicity of the chemical, requires some quantitative description of limits which should be ...
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High quality drip double wall corrugate 4" ips 1000mm firework mortar hdpe pipe
The Features of HDPE Pipe 1. Health: nontoxic, not scaling. It does not contain heavy metal additive and will not breed bacterium 2. Chemical resistance 3. Size: 16mm to 1800mm 4, Thickness: 2 3-162mm 5. Pressure Rating: 0.6mpa, 0. 8mpa, 1. 0mpa, 1.25mpa, 1.6,2.0mpa 6. Color: black, black with blue stripes, other colors available on request 7. Connection: socket fusion joint, butt fusion joint, ...
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Microcystin-LR removal from drinking water supplies by chemical oxidation and activated carbon adsorption
Microcystin-LR (MC-L) is among the most toxic and frequent cyanotoxins found in surface water and a provisional value of 0.001 mg/L is indicated by World Health Organization guidelines for water for human consumption. Among the conventional processes used for surface water treatment, the most effective in microcystin removal are chemical oxidation and adsorption. This study investigated two ...
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HDPE double wall corrugate mortar hdpe mortar tube pe drainage floating pipe
The Features of HDPE Pipe 1. Health: nontoxic, not scaling. It does not contain heavy metal additive and will not breed bacterium 2. Chemical resistance 3. Size: 16mm to 1800mm 4, Thickness: 2 3-162mm 5. Pressure Rating: 0.6mpa, 0. 8mpa, 1. 0mpa, 1.25mpa, 1.6,2.0mpa 6. Color: black, black with blue stripes, other colors available on request 7. Connection: socket fusion joint, butt fusion joint, ...
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BOUNTY HUNTERS - What do chocolate bars, french fries and California’s Proposition 65 have in common?
Enacted in 1986, california’s proposition 65 was meant to address growing concerns about exposure to chemicals believed toxic. Also known as the Safe Drinking Water and Toxic Enforcement Act, the initiative is better known by its original name. But to most businesses, Proposition 65 spells trouble. A recent rash of highly publicized threats of Proposition 65 lawsuits brought by California ...
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Research on raw water quality assessment oriented to drinking water treatment based on the SVM model
Raw water quality variation has a great effect on drinking water treatment. To improve the adaptivity of drinking water treatment and stabilize the quality of treated water, a raw water quality assessment method, which is based upon the support vector machine (SVM), is developed in this study. Compared to existing raw water quality assessment methods, the assessment method studied herein is ...
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EPA Confirms it will set MCLs for PFAS and PFOA
U.S. Senator Tom Carper (D-DE), a top Democrat on the Senate Environment and Public Works Committee (EPW) applauds an announcement from David Ross, EPA Assistant Administrator for water, indicating the Agency intends to set a legal limit for two toxic per- and polyfluoroalkyl substances (PFAS) chemicals found in drinking water. Specifically, the Agency will regulate perfluorooctane sulfonate ...
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