ASTM WK44406

    New Test Method for On-Line Monitoring of Total Organic Carbon, Total Carbon and Total Inorganic Carbon in Water by Catalyzed Ozone Hydroxyl Radical Oxidation and Detection of Resulting Carbon Dioxide

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    Developed by Subcommittee: D19.03 | Committee D19 | Contact Staff Manager


    1. Scope

    1.1 This test method covers the Catalyzed Ozone Hydroxyl Radical Oxidation system for the on-line analysis of total organic carbon, total carbon and total inorganic carbon in water, wastewater and industrial wastewater. 1.2 The carbon concentrations measured with this test method are in the range from 0.01 mg/L up to 40 000 mg/L. 1.3 This method allows the measurement of high organic and inorganic carbon concentration samples, and samples containing high levels of salts without any filtration and dilution requirement. 1.4 The chemical oxidation process, applied in this method, takes place at atmospheric pressure and at ambient temperatures in a high pH environment using hydroxyl radicals. 1.5 This method , which uses the catalyzed ozone hydroxyl radical oxidation (1) , has an oxidation potential of 2.80 V (2). The oxidation process is self-cleaning. NOTE 1 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. 1.6 This method is an alternative test method, utilized in the industry, including applications such as the process and wastewater monitoring in the dairy, oil and gas, pulp and paper, and chemical plants, and refineries, where on-line total organic carbon analysis was previously considered to be difficult. 1.7 The values stated in SI units are to be regarded as standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.


    total organic carbon; hydroxyl radical oxidation; water analysis; on-line monitoring system; total carbon; total inorganic carbon; non-purgeable organic carbon; purgeable organic carbon; volatile organic carbon; non-dispersive infrared analyzer; product loss prevention; process control; influent monitoring; final discharge monitoring; waste minimization


    The Catalyzed Ozone Hydroxyl Radical Oxidation method is a chemical oxidation method which does not use the traditional oxidation technologies. This method is an alternative technology which is currently being used in a wide range of applications world wide. Equipment using the Catalyzed Ozone Hydroxyl Radical Oxidation method have been available in the industry since 1995. Standard Guide D5173 in its current and revised form recognize the Catalyzed Ozone Hydroxyl Radical Oxidation method. However, a more detailed standalone standard is necessary to explain the oxidation method in detail, to list the advantages and the benefits of the method it brings to the industry. Catalyzed Ozone Hydroxyl Radical Oxidation method for on-line TOC analysis is a unique technology, which makes the TOC analysis possible in many challenging applications. When published as an ASTM method, this will help with the US EPA method approval process.

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Vishnu Rajasekharan

    Draft Under Development