water sampling Articles
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Chemical analysis of drinking water from some communities in the Brong Ahafo region
This study consisted of the determination of the trace metals and some physiochemical properties in drinking water samples from the Brong Ahafo region of the Republic of Ghana, where drinking water samples are not treated before it is consumed. The purpose was to ascertain the quality of water from these sources. Samples were taken from fifteen sampling points and analyzed for the following ...
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Study of precipitation chemistry over an industrial city
The growing trend of industrialization has marked impact on the atmospheric chemistry around the globe. Such impacts are also predicted for developing countries like India. Acid precipitation due to secondary pollutants is one of them. The present investigation was conducted with an aim of studying the precipitation chemistry over Asansol city, India during the monsoon season. The rain water ...
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On-line optical determination of floc size of Fe(III) coagulants
This study investigated the floc aggregation, average floc size, floc size variance and floc growth velocity when ferric chloride (FeCl3) and polyferric chloride (PFC) were used to treat the simulated water samples. The factors including coagulant dose, ionic strength and solution pH, which affect the floc aggregation, were studied. Experiments were carried out in a bench-scale reactor using ...
By IOS Press
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Probabilistic analysis of fluorescence signals for monitoring dual reticulation water recycling schemes
Improved techniques are required for the detection of inadvertent cross-connections between recycled water and potable water systems in dual reticulation schemes. The aim of this research was to assess the potential for fluorescence spectroscopy to be developed as a tool to distinguish recycled water from potable water. Weekly grab samples of recycled and potable water were obtained over 12 weeks ...
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Probabilistic analysis of fluorescence signals for monitoring dual reticulation water recycling schemes
Improved techniques are required for the detection of inadvertent cross-connections between recycled water and potable water systems in dual reticulation schemes. The aim of this research was to assess the potential for fluorescence spectroscopy to be developed as a tool to distinguish recycled water from potable water. Weekly grab samples of recycled and potable water were obtained over 12 weeks ...
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Comparison of Colilert-18 with miniaturised most probable number method for monitoring of Escherichia coli in bathing water
The purpose of this equivalence study was to compare an alternative method, Colilert-18 Quanti-Tray (ISO 9308-2) with the European bathing water directive (2006/7/EC) reference method, the miniaturised most probable number (MMPN) method (ISO 9308-3), for the analysis of Escherichia coli. Six laboratories analysed a total of 263 bathing water samples in Finland. The comparison was carried out ...
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Coping with the daily challenges of routine water analysis
Analyzing different types of water samples on a regular basis presents several challenges for analysts. Depending on the type of lab (e.g., municipal or water bottling facilities), the number of samples to be analyzed can vary significantly. Every day such laboratories receive hundreds of samples that must go through pH, conductivity, and alkalinity testing, among others. If additional tests ...
By Metrohm AG
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Cyanobacteria and bacteria co-occurrence in a wastewater treatment plant: absence of allelopathic effects
Fifty-one cyanobacteria strains, belonging to Phormidium autumnale, Planktothrix mougeotii, Limnotrix sp. and Synechocystis sp. species, were isolated during a twelve months period, from a Wastewater Treatment Plant (WWTP) located in the north of Portugal. Isolated strains and environmental samples were analyzed by Polymerase Chain Reaction (PCR) technique to evaluate the presence of the genes ...
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A New Field Method for Enumerating Viable Legionella And Total Heterotrophic Aerobic Bacteria
Presentation at the 2007 Association of Water Technologies Convention and Exposition ABSTRACT A new field method for the quantitative determination of viable Legionella and total heterotrophic aerobic bacteria was evaluated in hundreds of laboratory experiments and from analysis of over two thousand field samplers in actual operating conditions. The method has been proven reliable for ...
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Water Quality Parameters Along Rivers
Water samples have been collected from a part of Surma River along different points and analyzed for various water quality parameters during dry and monsoon periods. Effects of industrial wastes, municipal sewage, and agricultural runoff on river water quality have been investigated. The study was conducted within the Chattak to Sunamganj portion of Surma River, which is significant due to the ...
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Electrochemical inactivation kinetics of boron-doped diamond electrode on waterborne pathogens
A boron-doped diamond (BDD) electrode was constructed as a water disinfector for the inactivation of water borne pathogens. The bactericidal effect of the disinfector was evaluated on artificially contaminated waters containing, respectively, Escherichia coli, Pseudomonas aeruginosa and Legionella pneumophila at high density. By treating the bacterial suspensions with 4 V of constant voltage ...
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A Compact, Low-Power In-Situ Flow Analyzer for Marine Applications
A New Tool for In-Situ Analysis is Implemented On an Automated Buoy in the Mediterranean Sea Continuous monitoring of highly dynamic systems like coastal waters requires frequent sampling in a precise place in order to catch short-term events that might have a strong impact on the ecosystem, such as exceptional phytoplankton blooms or changes caused by storms. The lack of monitoring systems that ...
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Increased sample throughput for ICP-OES applied to U.S. EPA method 200.7
The application of an SC-FAST sample introduction system to the analysis of natural and certified water samples is described. The SC-FAST system consists of an autosampler, sample loop, switching valve, high efficiency nebulizer and a glass cyclonic spray chamber to perform analysis by direct nebulization. The potential benefits of this introduction system are numerous and include: increased ...
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Surface Ocean Acidification studies using Ships Of Opportunity
Ships of Opportunity Ships of opportunity (SOOP) are used as a platform for cost-efficient collection of environmental data, Ferrybox. The SOOP network operated by NIVA cover the majority of the Norwegian coastline (from Germany (54N ) in the South to Svalbard (78N) in the North. This network is used in the national OA monitoring program. Globally, SOOPs are used for pCO2 measurements and this ...
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Validation of salt water disposal well treatment plants with handheld oil in water sample analyzer
Salt Water Disposal (SWD) well operators often dispose a substantial volume of oil inadvertently when injecting salt water, thereby losing the opportunity to sell the oil on the market and potentially reducing the ability to inject water in the well. Injection facilities are typically operated with minimal instrumentation or system optimization, which means the operators don't know how much, or ...
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More control of blue-green algae for Dutch Water Board by means of continuous measurement - Case Study
Client Wetterskip Fryslân Country The Netherlands Friesland is a Dutch province rich in water. To ensure that all the water is and remains clean Friesland Water Board, Wetterskip Fryslân, measures the water quality at over 200 sites. This includes swimming and nature site De Kleine Wielen in Leeuwarden. At this site, Water Board Friesland measures blue-green algae using equipment ...
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The occurrence and fate of chemicals of emerging concern (CECS) in coastal urban rivers receiving discharge of treated municipal wastewater effluent
To inform future monitoring and assessment of chemicals of emerging concern (CECs) in coastal urban watersheds, the occurrence and fate of more than 60 pharmaceuticals and personal care products (PPCPs), commercial/household chemicals, current use pesticides and hormones were characterized in two effluent‐dominated rivers in southern California, USA. Water samples were collected during two ...
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Remediation of MSW landfill leachate by permeable reactive barrier with vegetation
This research was conducted to investigate in situ treatment of leachate by pilot-scale permeable reactive barrier (PRB) with vegetation. Two different types of PRB media, with and without the presence of ferric chloride sludge, for the removal of pollutants were examined. The composite media of PRB comprised a clay and sand mixture of 40:60%w/w (system 1) and a clay, ferric chloride ...
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Nitrite Monitoring for Hot Water Boilers and Cooling Water
In closed low-pressure water heating and cooling systems, sodium nitrite is a commonly used inhibitor that prevents oxygen related corrosion. It inhibits corrosion by promoting formation of protective films on surfaces. When nitrite is used as a corrosion inhibitor, it becomes crucial to maintain its concentration above a certain level to prevent localized corrosion from happening.Monitoring of ...
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Changes in the water quantity and quality of the Euphrates river are associated with natural aspects of the landscape
It has been argued that dam construction and irrigation projects in Turkey and Syria would diminish the flow of the Euphrates River and increase salinity levels. However, previous studies have not systematically defined the baseline changes in the quantity and quality of the river water. In this study, we associate variations in flow quantity and quality of water with natural aspects. We ...
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