organics analyser Articles

  • Adsorbent Trap for GC Analyses of Volatile Organic Compounds in Wastewater

    Adsorbents used in VOCARB purge traps offer superior adsorption/desorption characteristics, thermal stability, and hydrophobicity for monitoring volatile organic compounds (VOCs) in water. Response factors for compounds listed in US EPA Method 624 show that VOCARB 3000 traps meet the performance requirement for Methods 624/1624.           ...


    By Sigma-Aldrich Co., LLC

  • 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, ...

  • Carbotrap Carbon Black: An Excellent Adsorbent for Solvent or Thermal Desorption/GC Analyses of Airborne Organic Compounds

    Carbotrap adsorbent traps and releases a wider range of airborne organic compounds than Tenax GC or Amberlite XAD-2 resin. Compounds adsorbed by Carabotrap adsorbent can be completely recovered through either solvent or thermal desorption. Carbon disulfide, a highly effective desorbing solvent, degrades Tenax GC and Amberlite XAD-2, forcing you to use potentially less effective desorbing ...


    By Sigma-Aldrich Co., LLC

  • Hydropolitical Self-Organization theory; system dynamics to analyse hydropolitics of Helmand transboundary river

    The paper is based on the hydropolitical driver concept and analyses non-technological drivers responsible for the depletion of water resources determining the hydropolitical situation over time. To tackle the complexity stemming from the heterogeneity of drivers, the paper adopts both theoretical hydropolitics (hydropolitical driver concept) and system dynamics (SD) (causal loop diagrams ...


    By IWA Publishing

  • Ground Water Sampling for Metal Analyses

    The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange up-to-date information related to ground-water remediation at Superfund sites. Filtration of ground-water samples for metals analysis is an issue identified by the Forum as a concern of Superfund decisionmakers. Inconsistency in EPA Superfund ...


    By QED Environmental Systems

  • TOC analyser improves lab efficiency

    Leading instrumentation company HACH LANGE is helping a number of key customers save valuable time and costs with its new IL550 TOC-TN analyser. TOC analysis is vitally important in applications ranging from power generation, wastewater, drinking water, surface water and ultrapure water, to agricultural soils, contaminated land and food. HACH LANGE analysers therefore offer a range of options ...


  • Organics in boiler water condensate

    With the wide use of high efficiency boilers and current high-pressure boilers in industry today limiting condensate analysis to the more traditional parameters can result in very expensive repairs. Condensate return should be the highest quality least expensive water that most systems can generate. Boiler operators do not want to lose this or have it contaminated. Condensate return analysis has ...


    By LAR Process Analysers AG

  • Measuring total organic carbon in wastewater

    The continuous TOC analysis of industrial waste water is known to be problematic especially, when the TOC analyser is used as a spill monitor for heavily polluted waste water containing a high-load of particles. Thus, most operators require analysers that enable accurate TOC (total organic carbon) measurements. But do they really get those? Common analysers suffer from clogging and blockages due ...


    By LAR Process Analysers AG

  • The dissemination of genetically modified organisms in Brazil

    Authorised for commercialisation in the USA since 1994, Genetically Modified Organisms (GMO) were quickly disseminated in this country as well as in Canada, Mexico and Argentina. However, Brazil has remained outside of this process of diffusion. The objective of this article is to analyse the factors that limit the diffusion process of GMOs in Brazil. The article emphasises the polarisation of ...


    By Inderscience Publishers

  • Foulants analyses for NF membranes with different feed waters

    Two different NF membranes were operated to remove natural organic matter (NOM) originating from Dongbok Lake in Korea. Coagulation/sedimentation and sand filtration treated waters as membrane feed waters were used. Tested NF membranes such as RF (Saehan, Korea) and NF90 (Filmtec, USA) membranes were exhibited slightly different pore size distribution, hydrophobicity and surface charge in terms ...


    By Toray Chemical Korea

  • Substance flow analyses of phthalates and nonylphenols in stormwater

    The occurrence of nonylphenol and several phthalates in water environments is highly undesired because of their negative effects on aquatic organisms. The objectives of this study were to identify emission sources of phthalates, nonylphenol and its ethoxylates (NP/EOs) in urban stormwater, and to quantify the substance fluxes from the source to the stormwater system, using the methodology of ...


    By IWA Publishing

  • Should your company be conducting life cycle analyses?

    Many companies have already answered yes to that question – for a combination of reasons typically related to stakeholder interest, key customer demands, public perception, and competitive positioning.  In fact, life cycle analysis (LCA) has increasingly become an important tool in mature corporate sustainability programs, providing organizations with a consistent methodology for ...


    By Trinity Consultants

  • FTIR resolution requirements for industrial gas analyses

    FTIR Spectroscopy FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epitreatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D faciltities, FTIR is applied to combustion ...


    By CIC Photonics, Inc.

  • Optical Assessment of Dissolved Organic Carbon

    Natural organic matter is present in all sources of drinking water. When chlorine is used for drinking-water treatment, a portion of the natural organic matter reacts to form halogenated compounds, referred to as disinfection by-products (DBPs), some of which are regulated by the USEPA due to their health effects. The implementation of stricter drinking-water quality regulations for DBPs has ...

  • Emissions analyser helps manage power station

    A multiparameter emissions monitor at Thetford power station is being used to demonstrate to the Environment Agency that the plant is performing within the conditions of its environmental permit. However, the data from the analyser, which was supplied by Milton Keynes based Quantitech, also performs a vitally important role in helping to manage the plant. “Individual gas readings are ...


    By Quantitech Ltd

  • Japanese Organics Recycling Association Formed

    Another backyard composting adage states that compost should have the feel of a wrung-out sponge — damp but not dripping wet. Actually, a wrung-out sponge may be on the dry side for composting, but the analogy does provide a great image for understanding the reasons for balancing moisture. Like a compost pile (or windrow or material in a vessel), a sponge is a solid mass containing an enormous ...


    By BioCycle Magazine

  • Preparing the way for commercial organics recovery

    The Planning for a source-separated commercial organics program began in California's Santa Cruz County in 2001. Businesses were surveyed to determine if there was sufficient interest in separate collection of food, food-soiled paper and wax-coated cardboard to supply a collection route. Many restaurants, markets and residential facilities responded enthusiastically to the idea of collection and ...


    By BioCycle Magazine

  • Organic sum parameters for river monitoring

    The purpose of river monitoring is to have an early warning system for chemical accidents with the consequence of water pollution through hazardous chemical substances. The real objective goes even further because the early warning system is intended for protecting the sensible drinking water resources. River monitoring stations have been established along rivers around the world. Today there is ...


    By LAR Process Analysers AG

  • Environmental analysis of management systems for organic waste

    Organic waste is generally easily degradable and has a high nutrient content. Thus the risk is large that the handling of such material will generate emissions that affect the environment. New systems have been introduced for managing organic waste fractions from households and industries. These systems are based on source separation and biological treatment, e.g. composting and anaerobic ...


    By ORBIT e.V.

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