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

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This paper introduces the new method: ASTM D8086-16, which compares favorably with the current EPA-approved calculated total nitrogen in samples without interferences. Utilizing a high-temperature catalytic oxidation (or combustion) total organic carbon (TOC) 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 TKN and TN methods.

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