Introducing a New ASTM Method for the Determination of Total Nitrogen, and TKN by Calculation, in Water Samples

This paper introduces the new method ASTM D8086-16, which compares favorably with the current U.S. Environmental Protection Agency-approved calculated total nitrogen in samples without interferences. Utilizing a high-temperature catalytic oxidation (or combustion) total organic carbon analyzer equipped with a total nitrogen (TN) module, ASTM D8083-16 saves laboratories time, uses less reagent and smaller sample volumes, and overcomes several known issues with current total Kjeldahl nitrogen and TN methods.

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