drinking water analyzer Articles

  • TOC Analysis for Standard Methods 5310B: High-Temperature Combustion Method

    Introduction Total Organic Carbon (TOC) is a rapid method that analyzes for organic carbon and expresses the result as the amount of carbon found. It is a non-specific method unable to distinguish between various organic species and only indicates that organic carbon compounds are present. Organic carbon analyzers operate by the determination of the amount of total carbon present in a ...

  • Glyphosate and AMPA in drinking water

    Carcinogenic or not? The broad-spectrum herbicide glyphosate is used all over the world in agriculture. Alongside farming, the chemical is also used for weed-killing in domestic gardens and in public and private spaces kept free from «vegetal invasion», such as railway tracks. Glyphosate has been used since the 1970s in pesticides and was hitherto thought to be harmless at ...


    By Metrohm AG

  • Statistical approaches for analyzing customer complaint data to assess aesthetic episodes in drinking water

    Customer complaints and concerns about their drinking water quality provide valuable information for assessing potential risks when utilities routinely analyze these data. This research presents strategies to evaluate complaint patterns for diversity and frequency of descriptors and to apply exceedance frequencies to evaluate when the complaints were indicative of a water quality problem. Mean ...


    By IWA Publishing

  • GC-MS/MS Analysis of Pesticides in Drinking Water

    According to Japan’s list of drinking water quality control substances, pesticides are included as supplemental items subject to analysis. Designed to complement the standards, the Ministry of Health, Labour and Welfare encourages water utilities to monitor pesticide levels and achieve specified targets. Among the 102 listed pesticides, 84 are simultaneously analyzed using solid-phase ...

  • Spatial analysis of rural drinking water supply in China

    A spatial autocorrelation analysis method was employed to process the spatial change of rural water supply over the past 19 years in the People's Republic of China. Statistical analyses indicate great achievements in rural water supply construction. Two main indices describing rural drinking water supply status, the Rural Popularization Rate of Tap Water and the Rural Popularization Rate ...


    By IWA Publishing

  • Application of chemical oxygen demand to drinking water

    “This study investigated the use of a photoelectrochemical chemical oxygen demand (peCOD) analyzer for the detection of model organic compounds and natural organic matter (NOM) from four drinking water treatment plants in Nova Scotia, Canada. Most model organic compounds showed ...


    By Camlab Limited

  • Detection of PPT levels of atrazine in drinking water

    MATRIX: Drinking Water ANALYTES: Atrazine LIMIT OF DETECTION: 5 ppt RANGE OF DETECTION: 5 to 500 ppt MATERIALS: Atrazine RaPID AssayÒ Kit and Sample Diluent Reagents: atrazine control (preparation described below), methanol and ethylacetate (pesticide grade) and distilled or deionized ...


  • 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 ...

  • Fungi in biofilms of a drinking water network: occurrence, diversity and mycotoxins approach

    Results showed that 75% of the analyzed samples in a drinking water network were positive for fungi, in a range of 1–3,000 CFU/mL. Identification resulted in nine species of fungi and four species of yeasts being listed: Bjerkandera, Penicillium, Paraconiothyrium, Paecilomyces, Debaryomyces, Rhodotorula and Cryptococcus. ...


    By IWA Publishing

  • Effects of recycling flocculation membrane filtration on drinking water treatment

    Recycling flocculation membrane filtration (RF-MF) and coagulation membrane filtration (C-MF) were investigated for removal of natural organic matter (NOM) from Luan river in this study. The effectiveness of recycling flocculation pretreatment on both NOM removal and membrane filtration were assessed under different concentrations of coagulant and reflux flocs. Under the conditions of coagulant ...


    By IWA Publishing

  • The predictive value of total coliforms in drinking water using life table analysis

    Total coliform monitoring in distribution systems is no longer a required parameter in many countries but is still mandated in Canada and the USA. The value of reporting total coliform results in drinking water is a topic of debate. Total coliform and Escherichia coli results from small drinking water systems tested over a 3-year period in British Columbia were analyzed using life table ...


    By IWA Publishing

  • Detection of part per trillion levels of 2,4-d in drinking water

    MATRIX: Drinking water ANALYTES: 2,4-D (2,4-dichlorophenoxyacetic acid) and related phenoxy acids LIMIT OF DETECTION: 70 ppt to 5 ppb (for 10 mL sample), 7 ppt to 0.5 ppb (for 100 mL sample) MATERIALS: 2,4-D RaPID AssayÒ Kit and Sample Diluent Reagents: 2,4-D control (preparation described below), methanol and ...


  • An exploration of multilevel modeling for estimating access to drinking-water and sanitation

    Monitoring progress towards the targets for access to safe drinking-water and sanitation under the Millennium Development Goals (MDG) requires reliable estimates and indicators. We analyzed trends and reviewed current indicators used for those targets. We developed continuous time series for 1990 to 2015 for access to improved drinking-water sources and improved sanitation facilities by country ...


    By IWA Publishing

  • What’s in those new plastic pipes delivering drinking water?

    Lingering questions leave some concerned about a new generation of plumbing material The calls and e-mails arrive as often as several times a week from people with concerns about drinking water. Some of the callers — who include homeowners, architects and builders — want to know why their water smells like gasoline. Others want to know which kinds of pipes to ...


    By Ensia

  • Our drinking water systems are a disaster. What can we do?

    In the wake of the Flint, communities turn to innovative technology and financing to prevent the next crisis. People in developed countries turn on the tap and safe drinking water flows, a dramatic health benefit they tend to take for granted. That complacency was dramatically disrupted last year when children in Flint, Michigan, started testing positive for lead poisoning and the ...


    By Ensia

  • Multi-criterion optimization of energy management in drinking systems

    In this study, two different energy sources that are connected to a pumped storage water supply system are analyzed: a water and a wind turbine. A water turbine can be integrated in a water supply system in high-pressure locations. Recently, new sources of energy production are being researched and applied due to the increase in the price of conventional energy sources and concerns regarding the ...


    By IWA Publishing

  • Phthalate esters in main source water and drinking water of Zhejiang Province (China): Distribution and health risks

    To evaluate the distributions and health risks of phthalate esters (PAEs) in the main source water and corresponding drinking water of Zhejiang Province, the concentrations of 16 PAEs in water samples from 19 sites were measured from samples taken in the dry season and wet season. The concentration of the total PAE congeners (ΣPAEs) in source water ranged from 1.07 μg/L to 7.12 μg/L in the wet ...


    By John Wiley & Sons, Ltd.

  • Case study - GE and Severn Trent Services work together to gain UKAS accreditation for drinking water and waste waters

    Background Severn Trent Services (STS) is a leading provider of analytical services with a network of five laboratories and two service centers across the UK and Ireland. For over 20 years, STS has provided various analytical, sampling and monitoring services to meet customers’ requirements in areas such as potable water, waste water, groundwater, legionella, contaminated land, ...


    By GE Analytical Instruments

  • 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 ...


    By IWA Publishing

  • Scenario-based quantitative microbial risk assessment to evaluate the robustness of a drinking water treatment plant

    While traditional application of quantitative microbial risk assessment (QMRA) models usually stops at analyzing the microbial risk under typical operating conditions, this paper proposes the use of scenario-based risk assessment to predict the impact of potential challenges on the expected risk. This study used a QMRA model developed by Health Canada to compare 14 scenarios created to assess ...


    By IWA Publishing

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