Standards Development

Scope

This European Standard specifies the long-term sampling of PCDDs/PCDFs/PCBs. There are three different sampling methods, which are based on the three different principles described of EN 1948-1, but partially modified for long-term sampling requirements:

— filter/condenser method;

— dilution method;

— cooled probe method.

Each sampling method is illustrated in detail in an Annex. The sampling methods described in this document are designed for a sampling duration of typically up to four weeks.

Additionally, this document specifies a framework of quality control requirements to be applied respectively recommended for any long-term sampling method.

With the methods described, experiences were gained for a concentration range up to 4,0 ng TEQ/m³, respectively at various stationary sources (e.g., waste incinerators, sinter plants, cement kilns)

Purpose

Industrial Emission Directive (IED) imposes Member States to monitor polychlorinated dibenzodioxins and polychlorinated dibenzofurans (PCDD & PCDFs; PCDD/Fs hereafter) and dioxin-like polychlorinated biphenyls (PCB; dioxin-like PCBs hereafter) in stationary source emissions. In article 48 of the IED it is stated that as soon as appropriate measurements are available, the European Commission shall set the date from which continuous measurements of emissions into the air of heavy metals and dioxins and furans are to be carried out.

The applicability of CEN/TS 1948-5:2015 "Stationary source emissions - Determination of the mass concentration of PCDDs/PCDFs and dioxin-like PCBs - Part 5: Long-term sampling of PCDDs/PCDFs and PCBs;" has been proven to be successful in practice. Under this project CEN/TS 1948-5 will be transferred to EN 1948-5, which then describes a validated long-term sampling systems (LTSS) of the above-mentioned compounds, as they are being emitted from a waste incineration plant. The statistical work-up of the data ensures that the proposed method is sound and comparable to the existing, standard reference method (SRM)