Dioxin Emission Continuous Sampling

The increasing awareness of the dangers of compounds like dioxin, furans and POP’s for human health generated a compelling need for a better understanding of dioxin stack emissions.

Therefore, based on such requirements, Tecora (Italy), leading manufacturer of stack testing instruments and environmental monitoring samplers since 1974, designed and produced DECS, a Dioxin Emission Continuous Sampler, which is a fixed system for stack emission for determination of dioxins and furans on long term.

The system is permanently installed on stack for continuous sampling from 8 hours up to 30 days.

According to EN 1948 and USEPA 23, DECS adopts the filter condenser method with adsorbing trap on wet gas.

DECS consists of 2 units: sampling unit and control unit.

The sampling unit is the part to be mounted on the stack’s sampling point and its aim is the collection of the sample in its two phases (particulate and gas) without modifying its composition.

The control unit is the user’s interface which controls all system’s functions; it is usually located in a safe and easily accessible area.

Built in an industrial cabinet, it’s connected to the sampling unit through pneumatic and electrical connections.

DECS manages the sampling fully in automatic, without manned supervision.

At the end of each sampling, a summary report is produced, in order to calculate the concentration and evaluation of the measurement quality; a continuous record of the main parameters and alarms is also available.

Tecora obtained the mCERTs certificate for DECS from both CESI and SIRA UK.

Further, Tecora is the only company having been certified by Tüv Rheinland in direct comparison with the method described in the norm EN 1948.

After a short and long term campaigns (repeated twice), Tüv certified the conformity of DECS in accordance with EN 1948-1 requirements for sampling train and the equivalence of the results with the results coming from EN 1948-1-2-3.