water sampling bottle Articles
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Perfluorinated compounds contamination in tap water and bottled water in Bangkok, Thailand
Perfluorinated compounds (PFCs) such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) have been detected in the environment, in biota and in humans. The exposure pathways of these chemicals to humans are unclear. Tap water and bottled water are two possible pathways of PFCs occurrence in human blood. The major objectives of the study were to identify the occurrences of PFCs ...
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Things You Should Know about Your Reusable Water Bottle
Reusable water bottles are everywhere; on office desks, in gym bags, and in kids’ backpacks. And while it’s inexpensive, environmentally friendly, and incredibly convenient to stop by any tap or fountain for a quick refill, there are a few things to remember about these reusable bottles. Actually, there are a few things to remember about microorganisms: many of them love warmth, ...
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Determination of antimony in bottled water and polyethylene terephthalate bottles: a routine laboratory quality check
The paper describes a modified and optimised conventional wet ashing method for the determination of antimony (Sb) in polyethylene terephthalate (PET) bottles used for bottling sparkling and still water. The modified optimum conventional wet ashing method was applied as the digestion method to extract Sb from PET bottles, and the extracted Sb analysed using flame atomic absorption spectrometry ...
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Freeze–melting process significantly decreases phthalate ester plasticizer levels in drinking water stored in polyethylene terephthalate (PET) bottles
Bottled water consumption has increased significantly in recent decades. Eighty percent of bottled water is sold in plastic containers usually made from polyethylene terephthalate (PET). Trace leaching of phthalate esters (PEs) from these bottles into the water and their effects on human health has become a serious concern. In this study, the effects of freezing on the release of PEs from PET ...
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TOC Analysis of Bottled Water Using the Fusion UV/Persulfate TOC Analyzer
Abstract This application note demonstrates the Teledyne Tekmar Fusion UV/Persulfate analyzer’s ability to measure low levels of TOC in five popular bottled water brands. Bottled water samples varied in source and purification methods including: two natural aquifers, one vapor distilled, one reverse osmosis, and one two-stage microfiltration/UV light disinfection. All results had a 10% ...
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Potentially pathogenic bacteria isolated from different tropical waters in Sri Lanka
This study investigated the bacteriological contamination of different water sources in Sri Lanka. Source waters (n = 74) including bottled water, well water and surface water were assessed for enumerating total coliforms and faecal coliforms using the membrane filtration method. The results showed that 18.5 and 14.8% of bottled water samples were contaminated with total coliforms ...
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Detection of
Pseudomonas aeruginosa by PCR in tap-water and bottled mineral water in the Isfahan province of IranThe purpose of this study was to consider the use of a simple polymerase chain reaction (PCR) as an accurate, safe and rapid method to detect Pseudomonas aeruginosa in tap-water and bottled mineral water from Isfahan province, Iran. A total of 224 tap-water and bottled mineral water samples were taken over six months, from July to December 2010. DNA (deoxyribonucleic acid) was extracted from ...
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Radon levels in different types of bottled drinking water and carbonated drinks in Iraqi markets
In the present work, radon concentration was measured for different types of bottled drinking water and carbonated drink samples that are available in Iraqi markets. Radon measurements were carried out using a RAD-7 electronic radon detector. Annual effective dose was also calculated. The measured radon concentration in samples of bottled drinking water ranged from 0.0354 to 0.248 Bq/l with a ...
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Mineral water: a microbiological approach
Total coliforms, Escherichia coli, Pseudomonas aeruginosa and high heterotrophic plate count were found in bottled mineral water. What may represent an important public health problem, because the presence of these microorganisms can be harmful to the health of the consumer, principally because some are opportunistic pathogens capable of causing infections in vulnerable individuals. Sales of ...
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A preliminary Ames fluctuation assay assessment of the genotoxicity of drinking water that has been solar disinfected in polyethylene terephthalate (PET) bottles
Though microbially safe, concerns have been raised about the genotoxic/mutagenic quality of solar-disinfected drinking water, which might be compromised as a result of photodegradation of polyethylene terephthalate (PET) bottles used as SODIS reactors. This study assessed genotoxic risk associated with the possible release of genotoxic compounds into water from PET bottles during SODIS, using the ...
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New electrochemical sensor for sensitive quantification of copper in river, city, bottled and drinking water samples
In the present study, a reliable and very sensitive sensor for the determination of ultra-trace of Cu(II) is proposed. Copper was determined by anodic differential pulse stripping voltammetry based on the adsorption collection of the Cu(II) on an encapsulated Schiff base onto multiwalled carbon nanotube paste working electrode. The variation of peak current with pH and several instrumental ...
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The application of Flow Injection Technology to automating cold vapor MERCURY analyses
This document describes the application of flow injection technology to cold vapor mercury analyses. It can be obtained from PerkinElmer by requesting method number ENVA-100. Appendices 1 and 2 show letters from the US EPA indicating acceptability through the Alternate Test Program for both drinking water and wastewater sample analysis. 1.0 Scope and Application 1.1 This method measures total ...
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Case study N°AA7 – Ambiant air monitoring – VOC Purge & trap
Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec Solutions Chromatotec has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The analyzer is coupled with a degasing system ...
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Unique technology for monitoring piped water
INTELLITECT WATER has launched a unique, highly innovative drinking water monitoring technology that will revolutionise the delivery of drinking water. The new technology monitors the quality of water in pipeline distribution networks and for the first time provides reliable data to protect the integrity of the water quality, to enhance customer satisfaction and to improve operational efficiency. ...
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