Carbon quantifying apparatus and method

A method for quantifying carbon materials in a fluid, the method comprising:

• operating two or more electrodes positioned at least partially in the fluid to at least partially oxidize the carbon materials in the fluid, wherein the operating comprises using meter electronics, comprising a processor and coupled to the two or more electrodes, configured for:
• applying a varying DC voltage across the two or more electrodes, thereby at least partially oxidizing a predetermined carbon solute;
• applying, during application of the varying DC voltage, an AC voltage of a predetermined amplitude across a two or more electrodes;
• receiving, during application of the varying DC voltage, an electrical response of the liquid, comprising:
• measuring a resulting AC current across the two or more electrodes,
• determining a phase angle difference between the applied AC voltage and the measured AC current, and
• quantifying the carbon materials in the fluid using an electrical response;
• and
• detecting interfering materials in the fluid and using the fluid impedance calculated from the measured ratio of amplitudes and the phase angle difference.