Quality of treated wastewater: method validation of AOX

The reuse of treated wastewater and its release into the environment calls for a validated method for the determination of toxic compounds. We validate the method recommended by EN 1485 standard for AOX that are water soluble organic halides and describe it in two parts. The first part shows the validation by parameters such as applicability, accuracy, and reproducibility. After testing the normality of the statistical distribution of “the measured AOX concentration”, linearity, repeatability, limits of detection and limits of quantitation are calculated. The second part describes the routine use of the validated method.