total organic carbon TOC Articles

  • Utilizing TOC in Security Monitoring

    This article reviews the USEPA's Interim Guidance document in relation to Total Organic Carbon (TOC)measurements used for Security ...


    By GE Analytical Instruments

  • Measurement of TOC in High-Salt Sample

    The quantity of organic matter in seawater is important in the research and monitoring of marine pollution as an indicator of organic pollution. The salt content in seawater is typically about 3.5 %, but using the Shimadzu total organic carbon analyzer, it is possible to measure the TOC directly without dilution or other pretreatment procedures. Here, we introduce an example of measurement of ...

  • PeCOD vs Other Organic Pollution Testing Methods

    Find out How MANTECH’s PeCOD measures up with other systems in organic pollution testing methods! In James Pickup, Rijkswaterstaat Internship Thesis, read how our PeCOD analyzer performs beside the Total Organic Carbon (TOC) method. Also learn how the PeCOD exhibits a strong correlation to the traditional chemical oxygen demand (CODCr) method, Biochemical Oxygen Demand (BOD5) method and ...


    By MANTECH Inc.

  • The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone

    This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and ...


    By IWA Publishing

  • EPA Method 415.3 - Determination of TOC in Source Water and Drinking Water

    Method 415.3 states that the measurement of Total Organic Carbon (TOC) and DOC must use a TOC instrument that oxidizes organic carbon in the water to create carbon dioxide gas, which is then measurable. The instruments are required to use one of two basic oxidation methods – either through combustion with an oxidizing gas, or through chemical oxidation with persulfate promoted by either UV ...

  • Measurement of TOC in Perfluorochemical (PFOS) Solution

    PFOS is an extremely stable compound with strong carbon - fluorine bonds, and reports of its accumulation in wildlife and the environment have attracted international attention and concern, leading to the designation of PFOS as a persistent organic pollutant (POP).The persistent nature of PFOS prevents oxidative decomposition using wet chemical oxidation TOC analyzers; however, the Shimadzu ...

  • TOC System Suitability Test for Sterile Water

    The United States Pharmacopeia (USP) specifies that total organic carbon (TOC) content be used for management of organic impurity values permitted in bulk purified water, water for injection, in addition to sterile purified water and sterile water for injection. According to USP, TOC analyzers to be used for sterile water must satisfy the TOC system suitability test using test water ...

  • TOC Determination in Solid Samples using the Suspension Method

    The TOC content in solids plays an important role in the classification of soils, sludges and sediments. According to the German Ordinance on Environmentally Compatible Storage of Waste from Human Settlements, TOC in solid materials is one of the key parameters for the characterization of wastes as part of the acceptance control of landfills. This important control measure requires a ...

  • Choosing the appropriate TOC analyzer for your application?

    In choosing a Total Organic Carbon (TOC) analyzer, among the many factors that need to be given consideration are not only the current instruments and their accessories available on the market, but specifically to their method of sample oxidation in relation to the sample matrix. Different oxidation techniques may affect the analytical data due to the components within the sample matrix. This ...


    By Teledyne Tekmar

  • A simple method to check for natural attenuation downstream of abandoned waste disposal sites

    Evaluations of waste sites are based on the assessment of whether conditions for Natural Attenuation (NA) processes are favourable. A method is proposed as a first check for effects of NA in the groundwater emissions. For the application of the method, concentrations of the concerned substance and of a tracer must be available at observation wells at different distances from the source, ...


    By Inderscience Publishers

  • 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

  • New Green Methodology for Measuring Total Organic Carbon (TOC) — Supercritical Water Oxidation (SCWO)

    Analyzing the total organic carbon (TOC) content of industrial wastewater, process influent and effluent water, and environmental water samples can be very challenging. These aggressive sample matrices often clog or damage TOC analyzers that use the combustion method. This can result in expensive preventive maintenance and excessive non-regenerative waste. To address these critical issues, GE ...


    By GE Analytical Instruments

  • Improving TOC Removal to Achieve EPA DBP Compliance at the Green Valley WTP

    The Green Valley Water Treatment Plant (WTP) draws its water from two sources to supply Suisun, CA and surrounding communities. The WTP’s distribution system is very long resulting in lengthy detention times where free chlorine used for disinfection reacts with total organic carbon (TOC) to form high levels of Total Trihalomethanes (TTHMs). The Green Valley WTP was unable to adequately reduce the ...


    By Orica Australia Pty Ltd

  • The cleaning method selected for new PEX pipe installation can affect short-term drinking water quality

    The influence of four different cleaning methods used for newly installed polyethylene (PEX) pipes on chemical and odor quality was determined. Bench-scale testing of two PEX (type b) pipe brands showed that the California Plumbing Code PEX installation method does not maximize total organic carbon (TOC) removal. TOC concentration and threshold odor number values significantly varied between ...


    By IWA Publishing

  • Treatment of slaughterhouse plant wastewater by using a membrane bioreactor

    The use of a membrane bioreactor (MBR) for removal of organic substances and nutrients from slaughterhouse plant wastewater was investigated. The chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) concentrations of slaughterhouse wastewater were found to be approximately 571 mg O2/L, 102.5 mg/L, and 16.25 mg PO4-P/L, respectively. A submerged type membrane was used in ...


    By IWA Publishing

  • TOC and TN Measurements of Seawater

    For pollution control of the ocean and in the research of the ocean environment, the measurement of total organic carbon (TOC) is regarded as an important index of organic contaminants contained in seawater. At the same time, the measurement of total nitrogen (TN), which is known to cause eutrophication, is also attracting attention for environmental pollution control and in ecological ...

  • Catalysis of CuSO4 for total organic carbon detection based on supercritical water oxidation

    The catalytic effects of CuSO4 in total organic carbon (TOC) detecting processes based on supercritical water oxidation have been investigated. Using benzoic acid as a model pollutant, the presence of a CuSO4 catalyst can significantly decrease the reaction temperature and H2O2 multiple during the TOC detection processes. A better TOC conversion efficiency was ...


    By IWA Publishing

  • Real Time TOC Analysis in Steam and Condensate

    Executive Summary Steam in petro/chemical plants could be contaminated with hydrocarbons (TOC = Total Organic Carbons) from various sources. In any case this is a sign for defects in the process, whether it they occur in the heat exchanger, the blow down vessel, the condensate recovery or other parts of the system. Conventional solutions to monitor such contaminations use TOC- ...


    By JCT Analysentechnik GmbH

  • Integration of US/Fe2+ and photo-Fenton in sequencing for degradation of landfill leachate

    The landfill leachate treated by sonication in presence of Fe2+ (US/Fe2+) and then by photo-Fenton achieved the highest total organic carbon (TOC) removal efficiency among the screened processes. The lower initial pH, dosage of Fe2+ and initial concentration of leachate were helpful in raising TOC removal efficiency of leachate by US/Fe2+. The optimal conditions for ...


    By IWA Publishing

  • Suitability of Membrane Bioreactor for treatment of recalcitrant textile dye wastewater utilising white-rot fungi

    A Membrane Bioreactor (MBR) – utilising a mixed microbial community dominated by fungi – was explored for treatment of a synthetic textile dye wastewater containing dye, starch (main contributor to Total Organic Carbon, TOC) and other nutrients. Preliminary batch tests confirmed the superior decolouration capacity of a pure fungus culture due to simultaneous biosorption and ...


    By Inderscience Publishers

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