Innovations in continuous measuring methods for the determination of PCDD/PCDF in stack gas of incinerators and thermal processes

On the basis of standardized methods a continuous measuring method for the determination of PCDD/PCDF in stack gas of incinerators and thermal processes was developed. Significant time saving simplifications were performed by reducing the sampling fractions to the condensate fraction and selecting an indicator isomer of the 2,3,7,8-chlorinated congeners. The deviation caused by the simplification steps is acceptable when compared to the amount of time saved in the procedure. By means of the above mentioned simplifications, the applicability of the continuous measuring method is restricted to particulate-free stack gas with a quite constant isomer profile.