bathing water analysis Articles

  • Monitoring outfalls to Bathing Waters - Case study

    Bathing Water Catchment monitoring Date:2010 Location: Bude Cornwall UK Purpose: To carry out a river survey identifying potential pollution sources and their likely impact on bathing waters downstream. Background STS and the Environment Agency have, for some time, been discussing the issue of monitoring water courses which discharge directly into bathing waters. Of ...

  • A water quality index for recreation in Brazilian freshwaters

    Use of water for leisure activities has long been prevalent in human societies, especially where the climate is favorable. Water resources with appealing conditions for primary contact recreational activities include rivers, waterfall plunge pools, dams and lakes, as well as sea coasts. Recreational use has specific demands for water quality, particularly as regards risks to human health such ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • The development of cation-exchange chromatography in free amino acids analysis

    Although it was not called a liquid chromatograph, the first such instrument was introduced in late 1959 by Beckman Instruments and was designated the M.S. Amino Acid Analyzer in honour of Moore and Stein. Inject valves had yet to be invented, the buffer switching valves were glass stopcocks and the column temperature was controlled by circulating water baths. Two positive displacement pumps ...


    By Pickering Laboratories, Inc.

  • Emulsion breakingtechniques for oil in water solvent extractions

    Certain types of samples, such as those containing detergent, may form emulsions when doing an oil in water extraction into a solvent. The boundary between the solvent and the sample will have an emulsion layer that lias a cloudy or milky appearance as shown in tlris photo. According to U.S. EPA Method 1664, "if the emulsion is greater than one-third the volume of the solvent layer. Hie ...


    By Spectro Scientific

  • Emulsion-Breaking Techniques for Accurate Oil in Water Measurements

    A White Paper discusses emulsion-breaking techniques for ensuring accurate oil in water measurements. Certain water samples, such as those containing detergent, may form an emulsion when oil in water extraction into a solvent is done. In order to ensure an accurate measurement, the emulsion must be broken. Six techniques are described that can be used for reducing an emulsion ...


    By Spectro Scientific

  • Evaluation of real-time PCR for quantitative detection of Escherichia coli in beach water

    The current investigation evaluated the use of real-time polymerase chain reaction (PCR) for quantitative detection of Escherichia coli in marine beach water. Densities of E. coli in 263 beach water samples collected from 13 bathing beaches in Hong Kong between November 2008 and December 2009 were determined using both real-time PCR and culture-based methods. Regression ...


    By IWA Publishing

  • Detection of enteric viruses in Hungarian surface waters: first steps towards environmental surveillance

    Waterborne viruses infect the human population through the consumption of contaminated drinking water and by direct contact with polluted surface water during recreational activity. Although water related viral outbreaks are a major public health concern, virus detection is not a part of the water quality monitoring scheme, mainly due to the absence of routine analysis methods. In the present ...


    By IWA Publishing

  • Pathogenic Escherichia coli in rural household container waters

    Plastic containers in the range of 5–20 L are widely used – especially in rural African settings – to collect, transport and store water for domestic use, including drinking, bathing and hygiene. The pathogen content of the waters in these containers has not been adequately characterized as yet. This paper presents the primary findings of a synoptic survey of drinking water ...


    By IWA Publishing

  • Aluminum Anodizer Case Study Waste Water Treatment

    Manufacturing Wastewater Treatment Case Studies Aluminum Anodizer This facility anodizes aluminum components in a bath of sulfuric acid. The pH of the untreated wastewater is around 4, so it must ...


    By Integrated Engineers Inc.

  • A review of technologies for rapid detection of bacteria in recreational waters

    Untitled Document ABSTRACT Monitoring of recreational beaches for fecal indicator bacteria is currently performed using culturebased technology that can ...

  • Polyethersulfone/polyacrylonitrile blended ultrafiltration membranes: preparation, morphology and filtration properties

    Polyethersulfone (PES)/polyacrylonitrile (PAN) membranes have been paid attention among membrane research subjects. However, very few studies are included in the literature. In our study, asymmetric ultrafiltration (UF) membranes were prepared from blends of PES/PAN with phase inversion method using water as coagulation bath. Polyvinylpyrrolidone (PVP) with Mw of 10,000 Da was used as pore ...


    By IWA Publishing

  • Modelling Escherichia coli dynamics in the river Zenne (Belgium) using an OpenMI based integrated model

    In 2000, the European Union (EU) launched the Water Framework Directive (WFD), calling for a good ecological status for water bodies by 2015 through integrated river basin management. Despite huge investments, the river Zenne (Belgium) still acquires high loads of pollutants. A multidisciplinary research project was therefore launched to evaluate the effects of river basin wastewater management ...


    By IWA Publishing

  • Who used your water yesterday?

    The answer to the question above boils down to numbers in the final analysis. With more than half of the world's population already based in urban areas the additional demand for core services such as water is overtaxing capacities for water supply and disposal in many of the world's larger cities. And the problem is only going to get worse. The proportion of the world's population that will be ...


    By GLOBE SERIES

  • Comparative study of fecal bacterial decay models for the simulation of plumes of submarine sewage outfalls

    In the literature, analytical models have been shown to be extremely useful for estimating the decay rates of coliform as fecal indicator microorganisms, providing reliable predictions of bathing conditions in coastal and continental waters. Although a number of different formulations have been developed in the literature, each one may only be suitable for specific environments, and no ...


    By IWA Publishing

  • SMF4 case study 3

    Bathing Water Catchment monitoring Date:2010 Location: Bude Cornwall UK Purpose: To carry out a river survey identifying potential pollution sources and their likely impact on bathing waters downstream. Background STS and the Environment Agency have, for some time, been discussing the issue of monitoring water courses which ...

  • Aminoglycoside Antibiotics in Feed Apramycin, Gentamicin, Neomycin

    Aminoglycoside antibiotics are among those commonly used in animal feeds to manage intestinal microorganisms. The beneficial effects include improved growth and generally healthier animal populations. Use of antibiotics creates a demand for analytical procedures to verify concentrations in pre-mixes and feeds and in some instances for residue analysis in animal products. This note describes a ...

  • Measurement of Trace metals in Ambient air case study

    Trace metals are found at low concentration in the ambient environment and are associated with adverse health effects. The gold standard metal measurement is Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES); however, sample preparation is laborious and expensive. The Xact 625 metals monitor uses non-destructive X-ray fluorescence technology. A built-in sample collection system ...

  • South West Water Exmouth case study

    It can be a tough job for the water treatment industry, faced with the needs to ensure the effectiveness of their treatment plants and processes whilst keeping operating costs within strict budgets. Finding a solution to these challenges means not only investing in the most appropriate technologies so that treatment works fulfil their obligations, but also evaluating ways of optimising ...


    By Partech (Electronics) Ltd.

  • Delivering automation to test stations - Case Study

    CeraMem Corporation is a developer of metal oxide gas concentration sensors in Waltham, MA. Their test engineers required mass flow controllers that were easy to intregrate and calibrate. They also demanded fast response and high accuracy in order to reduce test cycle length and improve the quality of the data. Test station requirements demanded that controllers were capable of adjusting ratios ...


    By Sierra Instruments, Inc.

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