heavy metals in drinking water Articles
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Enhancing the removal of arsenic, boron and heavy metals in subsurface flow constructed wetlands using different supporting media
The presence of arsenic and heavy metals in drinking water sources poses a serious health risk due to chronic toxicological effects. Constructed wetlands have the potential to remove arsenic and heavy metals, but little is known about pollutant removal efficiency and reliability of wetlands for this task. This lab-scale study investigated the use of vertical subsurface flow constructed wetlands ...
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Spatial Analysis and Geographical Distribution of Heavy Metal Contamination in Urban House Water Reservoirs at Khamis Mushait City, Assir, Saudi Arabia
To determine the most common heavy metals in the different water reservoirs used for drinking water supply in houses located at Khamis Mushait city, Saudi Arabia (see Map1 and; (Fig.1-6, Table 1,2), Maps 2-10). To compare the results of the determined heavy metals with the standards set by Saudi Arabia Standards Organization and other international regulatory standards (Table 3). The ...
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A new Use for DNA - Testing for Heavy Metals with DNAzyme Technology
A completely new technology is now available that offers a new way to test water for contaminants andgreatly reduces the time, effort, costand complexity of testing water samples for contaminants such as lead ind rinking water. DNA sensor technology combined with a handheld fluorimeter platform tests water samples within two minutes, giving results at the push of abutton. Protecting public health ...
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Green alternative methods for voltammetric analysis in different water matrices
Mercury-free methods for determination of heavy metals in boiler feed, drinking, and sea water samples. Stripping voltammetry uses electrochemical sensors for the determination of heavy metal ions in different types of samples. These can include boiler feed water, drinking water, sea water, beverages, and even industrial samples like plating baths. Low detection limits (between ...
By Metrohm AG
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Heavy Metals Water Testing Powered by DNA
Water pollution is a worldwide problem affecting developing and developed countries alike. Heavy metal contaminants are one prevalent type of water pollutant. They are persistent in the environment once d is charged and removal from source waters is necessary to ensure a clean drinking water supply. The problem of heavy metal pollution arises from several sources. Heavy metals such as uranium can ...
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Arsenic and heavy metals contamination, risk assessment and their source in drinking water of the Mardan District, Khyber Pakhtunkhwa, Pakistan
The present study was conducted to investigate the physico-chemical characteristics in drinking water of Mardan District, Pakistan. Furthermore, water quality was evaluated for the risk assessment of arsenic and heavy metals (HMs) and their contamination sources. Representative groundwater samples of shallow and deep sources were collected in the study area. These samples were analyzed for ...
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Phytofiltration of water polluted with arsenic and heavy metals
This article reviews recent advances in phytofiltration of arsenic and toxic heavy metals from contaminated water ecosystems. Arsenic and metal contamination in drinking and non-drinking water has created global environmental health concerns. Phytofiltration using aquatic and terrestrial plants has promising potential for the ex situ and in situ clean-up of these waters. An arsenic ...
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Health Risks of Heavy Metals - Puroxi
Like heavy metal? Think again. We're not talking Ozzy here, but in fact heavy metals that can be very harmful to your health if found in your drinking water. Severe effects include reduced growth and development, cancer, organ damage, nervous system damage, and in extreme cases, death. Exposure to some metals, such as mercury and lead, may also cause development of autoimmunity, in which a ...
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Influence of Copper Mine on Surface Water Quality
Aras water basin is located in northwest of Iran. Sungun mine which is the largest open-cast copper mine of Iran is located in this region and is in the primary stages of extraction. The influence of mining activity on the quality of regional surface water has been taken in to consideration in this study. Accordingly, sampling was done from 5 local streams in the study area. In order to consider ...
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River Monitoring
The monitoring of River water has impications not only on the environmental impacts of heavy metals but also upon the quality of drinking water. THis case study covers an analyser installed in a remote location using low voltage power supplies to suppliment the local mains power supply which cannot be relied ...
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Impact assessment of waste disposal on water quality of a freshwater reservoir of India
Physico–chemical parameters and heavy metals were analysed in water samples, collected during rainy, winter and summer season of 2006–2007 to evaluate the impact of wastes on Halali reservoir. In surface water temperature, pH, TDS, EC, free CO2, DO, alkalinity, hardness and chloride were from 18.3–35.5°C, 7.4–8.9, 103–509 mg L−1, 162–800 µS cm−1, 0–14.86 mg L−1, 5.27–9.93 mg L−1, 65–256 mg L−1, ...
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Winter exposure assessment of copper, zinc and arsenic in drinking water of inhabitants in Beijing, China
Human exposure to Cu, Zn and As from drinking water in Beijing, China was estimated in winter. Cu, Zn and As were detected at 6.1, 400 and 0.6 µg/L on average in stagnant water, significantly different from those in the actually ingested boiled tap water, 5.1, 130 and 2.4 µg/L, respectively. Daily intake of Cu, Zn and As from drinking water was 0.8%, 7.7% and 28.5% of the minimum for adults ...
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Impact of AMD processes on the public water supply: hydrochemical variations and application of a classification model to a river in the Iberian Pyritic Belt S.W. Spain
The aim of this work is to formulate a rapid method for finding out the degree of water pollution in the field, based on the toxicity produced by sulfates and metals dissolved in solution, using simple pH measurement in rivers that undergo AMD processes and which flow into public water supply dams. A classification model based on the degree of the impact is proposed, which is applied to a river ...
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Cut-Off Wall - Abandoned Mine Tailings Pond - Case Study
Problem At an abandoned mine in the Yukon Territory, mining for both Gold and Zinc took place until the mid 1950's, with the processing of the ore taking place on the banks of an adjacent lake. Processing methods resulted in the creation of a large mine tailings pond that had high concentrations of iron, arsenic, zinc and lead. Spring runoff and summer rainfall then infiltrated through the pond ...
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4 Benefits of Sodium Zeolite Media for Drinking Water Filtration
Potable water treatment systems have little room for error after treatment at the risk of public health. Use of treatment systems that effectively target and treat toxic and undesirable contaminants is essential to drinking water production. There are typically four stages in a standard drinking water treatment system process, coagulation/.flocculation, sedimentation/clarification, filtration and ...
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Electrocoagulation Solutions - Technology meets needs of food & beverage wastewater treatment - Case Study
The effects of water scarcity and stricter environmental regulations placed on water usage are increasing the cost of using freshwater globally. The consequences of these increasing costs on food and beverage companies are twofold, since the companies are charged for both the water that they utilize in their processes and on their wastewater discharge. Additionally, the food and beverage ...
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