laboratory water deionization Articles

  • Effect of Leaching from Filters on Laboratory Analyses of Collective Organic Constituents

    Membrane and glass fiber filters are widely used in laboratory water and wastewater analyses. During sample filtration, some filters release organic compounds, which may interfere with organic analyses. This research investigated the interferences due to organic leaching in the determinations of dissolved organic carbon, biodegradable dissolved organic carbon, soluble biochemical oxygen demand, ...

  • Detecting Mercury in Water

    Determination of Mercury (Hg) in Water by Hand-Held, Portable Cold Vapor Atomic Fluorescence SpectrometryWater is the most familiar and most abundant compound on Earth, making up 71% of its surface area.[1]It is a vital component for all known forms of life and is the aquatic habitat for thousands of species of microalgae, fish and shellfish. [2] With the presence of running water in our ...


    By Arizona Instrument LLC

  • Analysis of PCB in water using the envirogard test system

    MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: Aroclor 1248: 1 ppm Aroclor 1260: 2 ppm Aroclor 1242: 2 ppm Aroclor 1254: 1.1 ppm BACKGROUND: This application describes a field screening method for determining PCB concentrations in water. A chemical reaction is induced that causes a color change ...


  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Photocatalytic inactivation of E. faecalis in secondary wastewater plant effluents

    Photocatalytic inactivation of Enterococcus faecalis using TiO2 suspensions was investigated and compared to the inactivation of the most commonly used faecal indicator strain Escherichia coli. In contrast to the inactivation in pure deionized water, disinfection of effluents from the biological process of an urban wastewater plant showed a longer initial lag phase and higher ...


    By IWA Publishing

  • Immobilization of copper flotation waste using red mud and clinoptilolite

    The flash smelting process has been used in the copper industry for a number of years and has replaced most of the reverberatory applications, known as conventional copper smelting processes. Copper smelters produce large amounts of copper slag or copper flotation waste and the dumping of these quantities of copper slag causes economic, environmental and space problems. The aim of this study was ...


    By SAGE Publications

  • Evaluation of parameters influencing removal efficiencies for organic contaminant degradation in advanced oxidation processes

    Advanced oxidation processes, based on hydroxyl radical chemistry, can be used to successfully destroy chemical contaminants in waters intended for reuse. In determining the effectiveness of these radical oxidative degradations and transformations in water, both reaction rate constants and compound removal efficiencies must be considered. Removal efficiencies are defined as the number of ...


    By IWA Publishing

  • The biological removal of phosphorus from simulated wastewater using miniature bioreactors

    The objective of this study was to utilize miniature bioreactors in a laboratory-scale setting to biologically deplete excessive amounts of phosphorus (P). P occurring in wastewater is usually found in the form of phosphate (PO4). The potential for phosphate-removing bacteria (PRB) to overload significant levels of PO4 under aerobic/anaerobic conditions was observed and evaluated. Wastewater ...

  • Procedure for calibration of micropipettors

    PURPOSE: Good Laboratory Practice dictates that all equipment used for the generation, measurement or assessment of data shall be adequately tested, calibrated and/or standardized. A procedure describing a pipettor calibration method, records of test performance and repairs should be available for laboratory personnel. This procedure describes a method for evaluating the accuracy and ...


  • Detection of alachlor or atrazine in soy flour

    MATRIX: Soy flour ANALYTES: Alachlor and atrazine RANGE OF DETECTION: Alachlor: 20 to 1000 ppb, Atrazine: 14 to 400 ppb. MATERIALS: Alachlor RaPID AssayÒ kit and Sample Diluent. HS Atrazine RaPID AssayÒ kit and Sample Diluent. Reagents: methanol (pesticide grade); concentrated hydrochloric acid (ACS ...


  • Detection of atrazine, alachlor, cyanazine and metolachlor in corn

    MATRIX: Grain corn ANALYTES: Atrazine, Alachlor, Cyanazine, and Metolachlor RANGE OF DETECTION: Atrazine: 20-1000 ppb Alachlor: 20-1000 ppb Cyanazine: 20-600 ppb Metolachlor: 20-1000 ppb MATERIALS: RaPID Assay Kit and Sample Diluent Reagents: methanol (pesticide grade), distilled or deionized ...


  • Electrodeionization

    Electrodeionization (EDI) is a water treatment technology that has gone from an unproven and unknown commodity to one that has revolutionized the industry in the past 20 years. The technology was first introduced to the market in 1987 by Ionpure Technologies. EDI is used in small and large applications. Laboratories use EDI in systems as low as 360 gallons per day (gpd), while power plants, ...


    By Agape Water Solutions, Inc.

  • Case study: telecommunication component manufacturing

    JMC Tools, formerly ADC Solitra Inc., offers integrated RF solutions for the telecommunications industry worldwide. The product range of the company covers high frequency components and modules for cellular and PCS systems, both analogue and digital. The company has close links with the world’s leading OEM manufacturers of cellular phones and infrastructure and has a strong ...


    By Watman Ltd.

  • Analysis of TNT AND RDX on gauze wipes using the ensys test system

    MATRIX: Gauze Wipe ANALYTE: TNT and RDX LIMIT OF DETECTION: TNT: 7 ug/100 cm2, RDX: 8 ug/100 cm2 BACKGROUND: This application describes a field screening method for determining TNT or RDX concentrations on gauze wipes. Acetone is used to extract the TNT or RDX from the gauze wipe and a chemical reaction is induced ...


  • Potential pollutants from farm, food and yard waste composts at differing ages: Leaching potential of nutrients under column experiments. Part II

    The quantity and quality of compost leachate depend on the age and composition of the composting materials and this study was undertaken to assess the changes in nutrient concentration and load of leachates coming from different compost mixtures and ages. Three different compost mixes (farm, food, yard waste composts) at different ages from fresh to maturity were leached with distilled and ...


    By BioCycle Magazine

  • Analysis of TNT and RDX in groundwater

    MATRIX: Water ANALYTE: TNT and RDX LIMIT OF DETECTION: TNT 1 ppb (mg/L), RDX: 5 ppb (mg/L) BACKGROUND: This application describes a field screening method for determining TNT and RDX concentrations in water. The method uses solid phase extraction to remove and preconcentrate the analytes from water. In the method, a 2 ...


  • Improvement of Electrodeposition Paint Processes with Reverse Osmosis

    Abstract For over 15 years, membrane separation processes have been very effectively utilized as essential components of electrodeposition (ED) paint processes. ED is the accepted method of applying the undercoat paint layer to new automobiles and appliances. As cross-flow membrane and ED paint technologies mature, new applications combining the two have been developed. A major American ...


  • ITRC technical regulatory guidelines for passive diffusion sampling, 2004

    Polyethylene diffusion bag (PDB) samplers are low-density polyethylene bags containing deionized water, used to collect water samples in groundwater wells for laboratory analyses of volatile organic compounds (VOCs). PDB samplers are passive devices, relying on the movement of groundwater from the aquifer or water-bearing zone through the screen or open interval of a well. VOCs in groundwater ...


    By EON Products Inc.

  • The Use Of UV For Dechlorination

    For many years chemical disinfection techniques have been used to provide microbiologically pure water for industrial and domestic use. Free chlorine, typically introduced by municipal water treatment plants in gaseous form, has been employed for many decades as a primary oxidising agent for the control of microbiological growth. Free chlorine can also be introduced through the injection of ...

  • Borehole logging case study

    Corozal, Puerto Rico GeoView was tasked to conduct borehole geophysical logging of at a groundwater extraction well in the rural area of the Municipality of Corozal, Puerto Rico. Prior groundwater tests indicated possible contamination of the groundwater. The study area was primarily underlain by stratified, mostly dark gray basaltic tuff, andesite and basalt porphyry rocks assigned to ...


    By GeoView, Inc.

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