Short description
The Technical Specification CEN/TS 1948-4 supplements the European Standards EN 1948-1, EN 1948-2, EN 1948-3. It specifies sampling from stationary sources, extraction, clean-up, identification and quantification procedures of the dioxin-like PCBs. The procedure described lays down requirements in order to measure PCB congeners. It is applicable to the 12 non- and mono-ortho PCB designated by the WHO. It is optimised to measure PCB concentrations in the range of 0,01 ng WHO-TEQPCB/m3. In addition to the 12 non- and mono-ortho-PCB the present standard is also applicable to measure further PCB-congeners like the so-called "marker PCB" 28, 52, 101, 138, 153, 180. This document specifies a framework of quality control requirements which have to be fulfilled by any PCB extraction, clean-up, identification and quantification methods to be applied. Validation measurements based on this Technical Specification are intended. Afterwards this Technical Specification should be transfered to a European Standard.